外掛說明

The SiteGround Optimizer plugin is developed by SiteGround to dramatically improve WordPress website performance on any hosting environment.

Initially designed for SiteGround’s servers and already used by almost 2 Million SiteGround clients, with the release of SiteGround Optimizer 7.0.0 the plugin will work on any hosting platform. All WordPress users, regardless of their hosting provider, can take advantage of its unmatched WordPress speed-boosting features, no tech knowledge required.

Even though some of its features will still only work on SiteGround’s hosting platform, due to the specific server optimizations that other hosting providers might not support, the SiteGround Optimizer plugin is the most powerful all-in-one WordPress performance plugin, free and available for all.

The SiteGround Optimizer plugin has few different parts handling specific performance optimizations:

Configuration

For detailed information on our plugin and how it works, please check out our SiteGround Optimizer Tutorial.

SiteGround Optimizer Dashboard Page

The Dashboard offers a quick look at the current optimization status of your website and shortcuts to the relevant optimization pages. In addition to that, since keeping your WordPress application, plugins, and themes up to date is important for your website speed and security, we’ve made sure to add a notification in the Dashboard in case your WordPress and/or plugins need an update.

SiteGround Optimizer Caching Page

On this page, you can control your website cache.

Dynamic Caching:
With our Dynamic Caching enabled all non-static resources of your website are cached to prevent unnecessary database queries and page loading, effectively decreasing the loading speed and TTFB (time to first byte) of your website. Dynamic Caching runs by default on all SiteGround servers and available only for them.

File-Based Caching:
With file-based caching enabled we will create static HTML versions of your website which will be served to future visitors. The files are stored in the browser memory.
Included in version 7.0.0, the File-Based Caching is available both for SiteGround and non SiteGround users.

File-Based Caching configuration:
    - Clean up interval - this allows you to manage the interval File-Based cache will be automatically purged on.
    - Preheat cache - When Preheating is enabled, our system will reload the cache once it is purged after content update in order to serve the fastest possible results to your real visitors. Preheating is using the website sitemap and being executed via cron.
    - Logged-in users cache - By default, we do not cache content for logged in users. Once Logged In Cache is enabled, we will store separate caches for each user. Note, that if you have many users, the size of the stored cache may be increased.

Memcached:
Powerful object caching for your site. Memcached stores frequently executed queries to your databases and then reuses them for better performance. It is available only on SiteGround Environment.

You can also enable Automatic Purge which will clear the cache when needed. You can use the WordPress API Cache Control checkbox if you need the WP API cache purged too.
Enabling the Browser-specific caching will create different cache versions based on the user agent used.
From Exclude Post Types you can exclude the ones you don’t want to be cached by Dynamic Caching. Feature is not available for File-Based Caching.
You can also exclude specific URLs or use a wildcard to exclude any sub-pages of a specific “parent-page”. The feature applies both for Dynamic and File-Based Caching.
We have also provided a test tool where you can check if a specific URL has Dynamic caching actually running.

We have a filter that allows you to control which user roles have access to flush the cache using the Purge SG Cache button.

Here’s an example of the code, you can add to your functions.php file:

add_filter( 'sgo_purge_button_capabilities', 'sgo_add_new_role' );
function sgo_add_new_role( $default_capabilities ) {
    // Allow new user role to flush cache.
    $default_capabilities[] = 'delete_others_posts'; // For Editors.
    $default_capabilities[] = 'edit_published_posts'; // For Authors.

    return $default_capabilities;
}

Another filter is created in order to manage the number of URLs your website will be preheating. The default value is 200.

Here’s an example of the code, you can add to your functions.php file:

add_filter( 'sg_file_caching_preheat_url_limit', 'sgo_preheat_limit' );
function sgo_preheat_limit( $xml_urls ) {
    // Define custom limit for XML URL preheat.
    $xml_urls = 300;

    return $xml_urls;
}

Keep in mind that when modifying the file-cache related filters below, you need to flush the cache, so the sgo-config is re-generated and the filters are added to it.

If you need to add a cache bypass cookie to the default ones, you can use the following filter:

add_filter( 'sgo_bypass_cookies', 'add_sgo_bypass_cookies');
function add_sgo_bypass_cookies( $bypass_cookies ) {
    // Add the cookies, that you need to bypass the cache.
    $bypass_cookies[] = 'cookie_name';
    $bypass_cookies[] = 'cookie_name_2';

    return $bypass_cookies;
}

If you need to skip the cache for a specific query parameter, you can use the following filter:

add_filter( 'sgo_bypass_query_params', 'add_sgo_bypass_query_params');
function add_sgo_bypass_query_params( $bypass_query_params ) {
    // Add custom query params, that will skip the cache.
    $bypass_query_params[] = 'query_param';
    $bypass_query_params[] = 'query_param2';

    return $bypass_query_params;
}

If you need to add a specific query parameter which will be ignored in the cache-creation and cache-spawn processes you can do it using this filter:

add_filter( 'sgo_ignored_query_params', 'add_sgo_ignored_query_params');
function add_sgo_ignored_query_params( $ignored_query_params ) {
    // The query parameters which will be ignored.
    $ignored_query_params[] = 'query_param';
    $ignored_query_params[] = 'query_param2';

    return $ignored_query_params;
}

SiteGround Optimizer Environment Page

Here, you can force HTTPS for your site and fix insecure content errors. You can activate Database Optimization which will remove all unnecessary items from your database and optimize its tables. If you are using the InnoDB storage engine, the optimization of tables is done automatically by the engine. Use DNS-Prefetching to increase load speeds for external resources. It works by resolving the domain name, before a resource is requested. You can also manage Heartbeat Control to modify the frequency of the WP Heartbeat for different locations. By default, the WordPress Heartbeat API checks every 15 seconds on your post edit pages and every 60 seconds on your dashboard and front end whether there are scheduled tasks to be executed. With this option, you can make the checks run less frequently or completely disable them.

We have a filter that allows you to exclude specific tables from being optimized. You need to specify the table name without the database prefix.

Here’s an example of the code, you can add to your functions.php file:

add_filter( 'sgo_db_optimization_exclude', 'sgo_db_optimization_exclude_table' );
function sgo_db_optimization_exclude_table( $excluded_tables ) {
    // Add tables that you need to exclude without the wpdb prefix.
    $excluded_tables[] = 'table_name';
    $excluded_tables[] = 'another_table_name';

    return $excluded_tables;
}

SiteGround Optimizer Frontend Optimization Page

The page is split into three tabs – CSS, JAVASCRIPT and GENERAL. In the CSS tab, you can enable/disable Minification of CSS files, activate/deactivate CSS combinations to reduce the numbers of requests to the server, and also Preload Combined CSS. Here you can also exclude styles from being combined/minified.
In the JAVASCRIPT tab, you can activate/deactivate JS minification and combination so you can reduce the script sizes as well as the number of requests made to the server. You can also Defer Render-blocking JavaScript for faster initial site load. You can also exclude specific scripts from the different types of optimizations.
The GENERAL tab offers you the possibility to Minify the HTML Output, which will remove unnecessary characters and reduce data size. With the Web Fonts Optimization we’re changing the default way we load Google fonts. A preconnect link for Google’s font repository will be added in your head tag. This informs the browser that your page intends to establish a connection to another origin, and that you’d like the process to start as soon as possible. In addition, all other local fonts will be preloaded so browsers can cache and render them faster. Also when combined with CSS Combination, we will change the font-display property to swap or add it if it’s missing, so we ensure faster rendering. You can Disable Emojis support in your pages to prevent WordPress from detecting and generating emojis on your pages. You can also Remove Query Strings from static resources to improve their caching.

SiteGround Optimizer Media Optimization Page

Image Compression:
Here, you can configure the Image compression in order to resize your existing images and decrease the space they are occupying. The dimension of the images will not change. You can fine-tune the compression level as well as choose either original images backups are created. It is available only on SiteGround Environment.

Use WebP Images:
WebP is a next generation image format supported by modern browsers which greatly reduces the size of your images. If the browser does not support WebP, the original images will be loaded. It is available only on SiteGround Environment.

You can also enable or disable Lazy Load for various assets. You can also exclude specific assets such as iframes, videos, thumbnails, widgets, shortcodes and more from the dropdown menu. You have an option to exclude specific images from Lazy Loading. This is done by adding the class of the image in the tab. Enable the Maximum Image Width if you often upload large images on your website. Enabling this will resize your existing and future images whose width exceeds 2560 px.

You can modify the max image width setting using the filter we’ve designed for that purpose. Here’s an example of the code, you can add to your functions.php file:

add_filter( 'sgo_set_max_image_width', 'max_image_width' );
function max_image_width( $max_allowed_width ) {
    // Add the value you want to adjust as max image width.
    $max_allowed_width = 1250;

    return $max_allowed_width;
}

You can modify the default Webp quality setting using the filter we’ve designed for that purpose. The default setting is 80, you can use values between 0 and 100:

add_filter( 'sgo_webp_quality', 'webp_quality' );
function webp_quality( $quality ) {
    // Add the value you want to adjust as Webp image quality.
    $quality = 100;

    return $quality;
}

You can modify the default Webp quality type setting using the filter we’ve designed for that purpose. The default quality type is lossy which equals to 0, if you want to set it to lossless – adjust the type to 1 as follows:

add_filter( 'sgo_webp_quality_type', 'reset_webp_quality_type' );
function reset_webp_quality_type( $quality_type ) {
    // Add the value you want to adjust as max image width.
    $quality_type = 1;

    return $quality_type;
}

SiteGround Optimizer Speed Test Page

Our performance check is powered by Google PageSpeed. Here you can check how well your website is optimized. The detailed test results will provide you with additional information on what can be optimized more.

Plugin Compatibility

If your plugin does not trigger standard WordPress hooks or you need us to purge the cache, you can use this public function in your code:

if (function_exists('sg_cachepress_purge_cache')) {
    sg_cachepress_purge_cache();
}

Preferably, you can pass an URL to the function to clear the cache just for it instead of purging the entire cache. For example:

if (function_exists('sg_cachepress_purge_cache')) {
    sg_cachepress_purge_cache('https://yoursite.com/pluginpage');
}

You can exclude styles from being combined and minified using the filters we’ve designed for that purpose. Here’s an example of the code, you can add to your functions.php file:

add_filter( 'sgo_css_combine_exclude', 'css_combine_exclude' );
function css_combine_exclude( $exclude_list ) {
    // Add the style handle to exclude list.
    $exclude_list[] = 'style-handle';
    $exclude_list[] = 'style-handle-2';

    return $exclude_list;
}

add_filter( 'sgo_css_minify_exclude', 'css_minify_exclude' );
function css_minify_exclude( $exclude_list ) {
    // Add the style handle to exclude list.
    $exclude_list[] = 'style-handle';
    $exclude_list[] = 'style-handle-2';

    return $exclude_list;
}

You can exclude script from being minified using the filter we’ve designed for that purpose. Here’s an example of the code, you can add to your functions.php file:

add_filter( 'sgo_js_minify_exclude', 'js_minify_exclude' );
function js_minify_exclude( $exclude_list ) {
    $exclude_list[] = 'script-handle';
    $exclude_list[] = 'script-handle-2';

    return $exclude_list;
}

You can exclude script from being combined using the filter we’ve designed for that purpose. Here’s an example of the code, you can add to your functions.php file:

add_filter( 'sgo_javascript_combine_exclude', 'js_combine_exclude' );
function js_combine_exclude( $exclude_list ) {
    $exclude_list[] = 'script-handle';
    $exclude_list[] = 'script-handle-2';

    return $exclude_list;
}

You can exclude an external script from being combined using the filter we’ve designed for that purpose. Here’s an example of the code, you can add to your functions.php file:

add_filter( 'sgo_javascript_combine_excluded_external_paths', 'js_combine_exclude_external_script' );
function js_combine_exclude_external_script( $exclude_list ) {
    $exclude_list[] = 'script-host.com';
    $exclude_list[] = 'script-host-2.com';

    return $exclude_list;
}

You can exclude inline script from being combined using the filter we’ve designed for that purpose. Here’s an example of the code, you can add to your functions.php file:

add_filter( 'sgo_javascript_combine_excluded_inline_content', 'js_combine_exclude_inline_script' );
function js_combine_exclude_inline_script( $exclude_list ) {
    $exclude_list[] = 'first few symbols of inline content script';

    return $exclude_list;
}

You can exclude script from being loaded asynchronously using the filter we’ve designed for that purpose. Here’s an example of the code, you can add to your functions.php file:

add_filter( 'sgo_js_async_exclude', 'js_async_exclude' );
function js_async_exclude( $exclude_list ) {
    $exclude_list[] = 'script-handle';
    $exclude_list[] = 'script-handle-2';

    return $exclude_list;
}

You can exclude url or url that contain specific query param using the following filters:

add_filter( 'sgo_html_minify_exclude_params', 'html_minify_exclude_params' );
function html_minify_exclude_params( $exclude_params ) {
    // Add the query params that you want to exclude.
    $exclude_params[] = 'test';

    return $exclude_params;
}

add_filter( 'sgo_html_minify_exclude_urls', 'html_minify_exclude' );
function html_minify_exclude( $exclude_urls ) {
    // Add the url that you want to exclude.
    $exclude_urls[] = 'http://mydomain.com/page-slug';

    return $exclude_urls;
}

You can exclude images from Lazy Load using the following filter:

add_filter( 'sgo_lazy_load_exclude_classes', 'exclude_images_with_specific_class' );
function exclude_images_with_specific_class( $classes ) {
    // Add the class name that you want to exclude from lazy load.
    $classes[] = 'test-class';

    return $classes;
}

You can exclude specific post type from Lazy Load using the following filter:

add_filter( 'sgo_lazy_load_exclude_post_types', 'exclude_lazy_load_from_post_type' );
function exclude_lazy_load_from_post_type( $post_types ) {
    // Add the post type that you want to exclude from using lazy load.
    $post_types[] = 'post-type';

    return $post_types;
}

You can exclude a specific url from Lazy Load using the following filter:

add_filter( 'sgo_lazy_load_exclude_urls', 'exclude_lazy_load_for_url' );
function exclude_lazy_load_for_url( $excluded_urls ) {
    // Add the url that you want to exclude from using lazy load.
    $excluded_urls[] = 'http://mydomain.com/page-slug';

    return $excluded_urls;
}

With these new filters you can exclude specific assets from being lazy loaded. Keep in mind that using those filters can reduce perfomance in some cases.

You can use this filter for excluding specific images by adding their source url:

add_filter( 'sgo_lazy_load_exclude_images', 'exclude_images_from_lazy_load );
function exclude_images_from_lazy_load( $excluded_images ) {
    // Add the src url of the image that you want to exclude from using lazy load.
    $excluded_images[] = 'http://mydomain.com/wp-content/uploads/your-image.jpeg';

    return $excluded_images;
}

You can use this filter for excluding specific videos by adding their source url:

add_filter( 'sgo_lazy_load_exclude_videos', 'exclude_videos_from_lazy_load );
function exclude_videos_from_lazy_load( $excluded_videos ) {
    // Add the src url of the video that you want to exclude from using lazy load.
    $excluded_videos[] = 'http://mydomain.com/wp-content/uploads/your-video.mp4';

    return $excluded_videos;
}

You can use this filter for excluding specific iframe by adding their source url:

add_filter( 'sgo_lazy_load_exclude_iframe', 'exclude_iframe_from_lazy_load );
function exclude_iframe_from_lazy_load( $excluded_iframe ) {
    // Add the src url of the iframe that you want to exclude from using lazy load.
    $excluded_iframe[] = 'http://mydomain.com/wp-content/uploads/iframe-src.mp4';

    return $excluded_iframe;
}

WP-CLI Support

In version 5.0 we’ve added full WP-CLI support for all plugin options and functionalities.

Caching:
* wp sg optimize dynamic-cache enable|disable – enables or disables Dynamic caching rules
* wp sg optimize file-cache enable|disable – enables or disables File caching rules
* wp sg memcached enable|disable – enables or disables Memcached
* wp sg optimize autoflush-cache enable|disable – enables or disables Automatic Purge cache option
* wp sg optimize purge-rest-cache enable|disable – enables or disables Automatic Purge for WordPress API cache
* wp sg purge (url) – purges the Dynamic, File-based and Object caches for the site or a single url (if passed)
* wp sg optimize mobile-cache enable|disable – enables or disables Browser caching rules

Environment:
* wp sg forcehttps enable|disable – enables or disables HTTPS for your site
* wp sg optimize fix-insecure-content enable|disable – enables or disables Insecure Content Fix
* wp sg heartbeat frontend|dashboard|post --frequency=<frequency> – Adjust Heartbeat control frequency for a specific location
* wp sg dns-prefetch add|remove|urls <value> – add, remove or list urls in the DNS Prefetch list.
* wp sg optimize database-optimization enable|disable – enables or disables the DB Optimization

Frontend:
* wp sg optimize css enable|disable – enables or disables CSS minification
* wp sg optimize combine-css enable|disable – enables or disables CSS combination
* wp sg optimize preload-combined-css enable|disable – enables or disables Preload Combined CSS
* wp sg optimize js enable|disable – enables or disables JS minification
* wp sg optimize combine-js enable|disable – enables or disables JS combination
* wp sg optimize js-async enable|disable – enables or disables Defer Render-blocking JavaScript option
* wp sg optimize html enable|disable – enables or disables HTML minification
* wp sg optimize web-fonts enable|disable – enables or disables Web Fonts Optimization
* wp sg optimize querystring enable|disable – enables or disables query strings removal
* wp sg optimize emojis enable|disable – enables or disables stripping of the Emoji scripts

Media:
* wp sg images --compression-level=<int> – adjusts images optimization compression level – should be set as follows: 0 for Disabled, 1 for Low(25%), 2 for Medium(60%), 3 for High(85%)
* wp sg optimize backup-media enable|disable – enables or disables Backup Media option
* wp sg optimize webp enable|disable – enables or disables WebP image optimization
* wp sg optimize lazyload enable|disable – enables or disables Lazy loading of images
* wp sg optimize resize-images enable|disable – enables or disables Maximum Image Width optimization

Others:
* wp sg settings export – exports the current plugin settings
* wp sg settings import --hash=<string> – imports plugin settings and applies them
* wp sg status (optimization option) – returns optimization current status (enabled|disabled)

Available wp sg status options

dynamic-cache|autoflush|browser-caching|file-cache
memcache
ssl|ssl-fix
database-optimization
html|js|css
combine-css|combine-js
js-async
google-fonts
querystring
emojis
webp
lazyload-images

Requirements

In order to work correctly, this plugin requires that your server meets the following criteria:

WordPress 4.7
PHP 7.0+

Our plugin uses a cookie in order to function properly. It does not store personal data and is used solely for the needs of our caching system.

Credits

Photo credits to Anna Shvets https://www.pexels.com/@shvetsa

螢幕擷圖

The SiteGround Optimizer Dashboard Page offers a quick look at the current optimization status of your website, along with shortcuts to the relevant optimization pages.
The SiteGround Optimizer Caching Page handles your Dynamic caching and Memcached. Here, you can exclude URls from the cache, test your site and purge the Dynamic caching manually.
The SiteGround Optimizer Environment Page, you can force HTTPS for your site, tweak the WordPress Heartbeat Optimization, pre-fetch external domains and enable the Database Maintenance.
The SiteGround Optimizer Frontend Optimization Page allows you to Minify HTML, CSS & JS, as well as to remove query strings from your static resources and disable the Emoji support.
The SiteGround Optimizer Media Page allows you to optimize your Media Library images, as well as adds Lazy Loading functionality for your site.
The SiteGround Optimizer Speed Test Page, allows you to test your site loading speed, as well as additional tips on improving your site performance.

安裝方式

Automatic Installation

Go to Plugins -> Add New
Search for “SiteGround Optimizer”
Click on the Install button under the SiteGround Optimizer plugin
Once the plugin is installed, click on the Activate plugin link

Manual Installation

Login to the WordPress admin panel and go to Plugins -> Add New
Select the ‘Upload’ menu
Click the ‘Choose File’ button and point your browser to the sg-cachepress.zip file you’ve downloaded
Click the ‘Install Now’ button
Go to Plugins -> Installed Plugins and click the ‘Activate’ link under the WordPress SiteGround Optimizer listing

使用者評論

generosus 2022 年 9 月 21 日

Dear SiteGround, We hope you will accept this as constructive feedback. What We Like About SGO: 1. Beautiful user interface. 2. Easy to use. 3. Decent amount of features. 4. Great customer support. What We Don't Like About SGO: 1. Unable to custom purge cache (by URL) via built-in user interface (lacking feature). 2. When we enable Memcached, our website actually slows down (verified by SG). 3. When we enable Memcached and visit the plugin's Dashboard section, our WP Site Health Status score breaks (verified by SG). 4. When we enable Combine CSS Files and Preload Combined CSS, the resulting SG CSS file is always render-blocking (verified by SG). With Perfmatters, we never have this issue. 5. Unable to remove Unused CSS (lacking feature). 6. The Speed Test module is not reliable. Most of the time, it's unable to connect with Google's servers (verified by SG). Also, we always have to run the speed test twice -- one for desktop results and one for mobile results. Best to obtain all results at once with one click (same as PageSpeed Insights). 7. The option to connect SGO to Cloudflare is scheduled to be removed (verified by SG). Taking away what we've been using for over two years is not a good thing. 8. The Lazy Load Media feature is not as efficient or easy to use compared to other plugins. It does not allow the user to exclude images simply using the image URL (lacking feature). We use Perfmatters instead. 9. While useful, the plugin heavily relies on Code Snippets to perform additional functions. Perhaps some can be revisited and incorporated into the plugin in the future. 10. There is no public site (e.g., blog or knowledgebase site) where we can view SG's future plans for this plugin. Would be nice to have one. Perfmatters (and other plugins) do offer this. 11. The Details section of this plugin is heavily loaded with both technical and non-technical information. It keeps on growing as more issues and solutions are developed for this plugin. Perhaps this section can be simplified by transferring most data to SG's knowledge base (with a reference or link to it in the Details section). 12. There is no option for custom-scheduling our database maintenance. Daily, monthly, or on-demand options are not available. We're stuck with weekly only. 13. There is no option for generating AVIF images (lacking feature). Overall a good plugin, but offers a lot of room for improvement. Thank you for reading!

ianknight7000 2022 年 9 月 15 日

Optimizer is a great plug-in if you don't need a sticky header, woocommerce, or any other major lightbox feature. . It took me 2 days and another support team to track down the issue. . I love Siteground, but I can't support this plugin.

efquintana 2022 年 9 月 15 日

I have tried it. I've actually tried this on different sites and at different times, but always end up disabling dynamic caching and using another cache plugin. SiteGround's dynamic cache is very well thought out in theory. But reality has cookies, users who log in, carts that change, payment gateways, embedded content... Also the plugin tries to be so simple, that it complicates everything because it doesn't allow any customization, specific exclusions or anything that is really useful. In the end, both the dynamic cache and the plugins are only useful on pages with basic content and on websites where there are no cookies. In other words, in few real places.

nimrodmayan 2022 年 9 月 10 日

I have been a SiteGround client for 5 years now. Everything they do is top notch! Including this plugin.

joehodway 2022 年 9 月 10 日

Might be good, but it prevents WooCommerce product image zoom and lightbox functions from working - so have had to disable/remove it.

orelqr 2022 年 8 月 22 日

Fantastic like other SiteGround products, highly recommended!

閱讀全部 501 則使用者評論

參與者及開發者

以下人員參與了開源軟體〈SiteGround Optimizer〉的開發相關工作。

SiteGround Optimizer 外掛目前已有 15 個本地化語言版本。感謝全部譯者為這個外掛做出的貢獻。

將〈SiteGround Optimizer〉外掛本地化為台灣繁體中文版

對開發相關資訊感興趣？

任何人均可瀏覽程式碼、查看 SVN 存放庫，或透過 RSS 訂閱開發記錄。

變更記錄

Version 7.2.1

Release Date: August 10th, 2022

Improved Cloudflare detection

Version 7.2.0

Release Date: July 14th, 2022

Brand New Design
Improved Dynamic cache purge
Improved data collection

Version 7.1.5

Release Date: June 23rd, 2022

Improved Memcached service

Version 7.1.4

Release Date: June 21th, 2022

Improved older PHP versions support

Version 7.1.3

Release Date: June 20th, 2022

NEW Lazy Load exclude filters
Improved Max Image Width
Improved .htaccess modifications checks
Improved File-Based cache Elementor support
Improved Password Protected pages excluded from File-Based caching by default
Improved Single Image compression functionality
Improved Image Optimization for custom image sizes
Improved Divi theme support
Minor fixes

Version 7.1.2

Release Date: June 16th, 2022

Adding Memcached UNIX socket support
Improved data collection

Version 7.1.1

Release Date: May 20th, 2022

Improved default settings

Version 7.1.0

Release Date: May 10th, 2022

Improved HTTPS Enforce
Improved Database Optimization
Improved Auto Purge functionality for scheduled posts
Improved File-Based cache exclude filtering
Improved CSS Combination
Improved JS Minification
Improved Meks Flexible Shortcodes plugin support
Improved All in One SEO plugin support
Improved Authorize.Net Gateway support

Version 7.0.9

Release Date: April 7th, 2022

Improved SG Security plugin support

Version 7.0.8

Release Date: April 6th, 2022

Improved File-Based cache checks
Improved Memcached service checks
Improved activation checks
Code Refactoring

Version 7.0.7

Release Date: March 24th, 2022

Image deletion refactoring

Version 7.0.6

Release Date: March 4th, 2022

Improved installation for users not hosted on SiteGround

Version 7.0.5

Release Date: March 2nd, 2022

Improved Cache Preheat
Improved Auto Purge functionality (File-Based cache, comments, custom post types)
Improved new images WebP generation
Improved Multisite support

Version 7.0.4

Release Date: February 28th, 2022

Improved uninstall checks

Version 7.0.3

Release Date: February 14th, 2022

Improved Divi support
Improved WP-CLI support

Version 7.0.2

Release Date: February 10th, 2022

Improved Cloudflare cache purge
Improved Divi support
Improved JS Combination
Improved WP-CLI support
Minor bug fixes

Version 7.0.1

Release Date: February 4th, 2022

Improved Cache Preloading
Improved Cloudflare detection
Improved Divi support
Minor bug fixes

Version 7.0.0

Release Date: February 2nd, 2022

NEW – Plugin available for users not hosted on SiteGround
NEW – File-Based Full Page Caching
NEW – File-Based Full Page Caching for Logged-in Users
NEW – Cache Preloading (requires FB Caching)
NEW – Individual Image compression level settings
Code Refactoring and General Improvements
Improved HTML Minification
Improved LazyLoad excludes
Improved Automatic Purge for custom post types
Improved Cache exclude for wp-json URLs
Improved Test URL cache option
Improved Cloudflare detection
Improved Phlox theme support
Improved WooCommerce email verification support
Improved WP-CLI support
Environment data collection consent added

Version 6.0.5

Release Date: November 17th, 2021

Improved HTML minification

Version 6.0.4

Release Date: November 16th, 2021

Improved HTML minification
Improved HTTPS Enforce for multisites
Improved Google PageSpeed Integration
Improved multisite permissions for admins
Improved autoflush

Version 6.0.3

Release Date: November 8th, 2021

Improved translations
Improved multisite support
Improved Speed test result
Improved assets cleanup
Improved Cloudflare support

Version 6.0.2

Improved translations
Improved image optimization

Version 6.0.1

Improved recommended optimizations labels
Improved REST API error handling
Improved CF authentication
Improved multisite interface
Improved database optimization
Fixed Memcached healthcheck

Version 6.0.0

Brand New Design
Code Refactoring
NEW – Recommended Optimizations
NEW – Plugin Dashboard Page
NEW – Maximum Image Width
NEW – Backup Original Images when Optimizing
NEW – WordPress API Cache Control
Improved WordPress Heartbeat Optimization
Improved Image Compression Control

Version 5.9.7

Improved cache busting for themes utilizing custom post types

Version 5.9.6

Improved WP Json purging mechanisms
Added protection against cronjob loops caused by 3rd party plugins
Improved Spam comments handling

Version 5.9.5

Improved Page Builders Support (Elementor, Oxygen, Divi and others)

Version 5.9.4

Improved smart cache

Version 5.9.3

Fixed WebP regeneration issue

Version 5.9.2

Improved cache flush queue

Version 5.9.1

Minor bug fixes

Version 5.9.0

Plugin refactoring

Version 5.8.5

Improved CF detection
Minor bug fixes

Version 5.8.4

Improved cache purging mechanism

Version 5.8.3

Improved cache purge

Version 5.8.2

Improved speed tests
Improved Google Fonts combination
Improved HTTPS enforce

Version 5.8.1

Improved cache purge

Version 5.8.0

Added preloading for combined css scripts
New and improved performance test
Design improvements
Custom error handler removed
Increased WebP PNG optimization limit
Changed tutorials urls
Improved readme file
Minor bug fixes

Version 5.7.20

Perform smart purge on the blog page when editing a post
Remove jQuery Dependency from Lazy-load

Version 5.7.19

Change loseless quality

Version 5.7.18

Improved REST API cache invalidation

Version 5.7.17

Improved WordPress 5.7 support

Version 5.7.16

Improved Contact Form 7 support
Improved Amelia booking support
Improved support for sites with custom wp-content dir

Version 5.7.15

Improved Contact Form 7 support

Version 5.7.14

Improved Vary:User-Agent handling

Version 5.7.13

Add settings import/export cli command
Exclude XML sitemaps from optimizations
Fix DNS Resolver fatal error for non existing hosts
Fix Cloudflare optimization for sites with custom wp-content dir
Improved Speed Test description for Webfonts optimization

Version 5.7.12

Improved Feed Cache Flush

Version 5.7.11

Improved CloudFlare Optimization
Add CloudFlare multisite support
Improved RevSlider support
Add uploads permissions check

Version 5.7.10

Revert to old HTML Minification

Version 5.7.9

Fixed bug with WooCommerce ajax

Version 5.7.8

Fix HTML Minification Refactoring

Version 5.7.7

HTML Minification Refactoring

Version 5.7.6

Improved cache flush, on automatic assets deletion

Version 5.7.5

Improved Flatsome UX Builder support
Improved Essential Addons for Elementor support
Updated readme

Version 5.7.4

Improved Leverage Browser Caching rules
Add exclude by post type
Improved Cloudflare cache purge

Version 5.7.3

Improved cache purge on Cludflare activation
Improved deauthentication of Cloudflare
Text improvements

Version 5.7.2

Fixed bug when external assets are not cleared properly
Improved detection of active Cloudflare
Text improvements

Version 5.7.1

Fixed bug with clearing cache from helper function

Version 5.7.0

Full-page Caching on CloudFlare
Web Fonts Optimization

Version 5.6.8

Improved SSL Replace patterns

Version 5.6.7

Improved JS & CSS Combination exclude list
Bumped JS Combination stop limit
Improved functionality to stop JS Combination if randomized names create endless combination files

Version 5.6.6

Improved JS Combination exclude list
Bumped JS Combination stop limit
Fixed typos

Version 5.6.5

Improved Elementor Pro 3.0 support

Version 5.6.4

Fix error in CSS Combinator

Version 5.6.3

Better WP 5.5 support
Improved log handling

Version 5.6.2

Improved JS Combination exclude list
Disable native WordPress lazyloading

Version 5.6.1

Second stage of Memcached improvements applied
Added WP-CLI control for heartbeat, dns-prefetching and db optimizations
Fixed non-critical notices while using PHP 7.3

Version 5.6.0

Added Heartbeat Control
Added Database Optimization
Added DNS Prefetching
Improved Browser Caching XML rules
Refactored Lazy Load
Deprecated Compatibility Checker & PHP Switcher
Improved Lazyload Videos for Classic Editor
Added functionality to stop JS Combination if randomized names create endless combination files

Version 5.5.8

Added proper AMP support
Added samesite parameter to the bypass cookie
Added support for Shortcodes Ultimate
Extended the sg purge wp-cli command to delete assets too
Improved support for Uncode Themes

Version 5.5.7

Improved Memcached Integration
Added protection for objects too big to be stored in Memcached
Improved JS and CSS Combination Exclude List
Improved Lazy Load functionality
Improved Image Optimization for sites using CDN

Version 5.5.6

Improved WP CLI commands
Extended Combine JavaScript Exclude list
Improved Beaver Builder Support
Revamped bypass cookie functionality
Improved Multisite Controls

Version 5.5.5

Improved Script Combinations Excluding Functionality
Improved Internationalisation
Improved Lazy Loading
Improved WooCommerce Support for 3rd Party Payment Gateways
Added Global JS exclude for Plugins with Known Issues
Added WP-Authorized-Net support
Added Facebook for WooCommerce support

Version 5.5.4

Fixed issue with CSS Combination causing problems with media specific stylesheets
Added defer attribute for the Combined JS files when JS Defer is enabled
Better support with sites using long domains (.blog, .marketing, etc.)
Fixed Memcached XSS security issues
Fixed CSS & JS Combination for sites with custom upload folders

Version 5.5.3

Fix ISE for Flatsome theme

Version 5.5.2

Better CSS Combination
Better Fonts Combination
Better concatenation of inline scripts
Improved WebP Quaity Slider
Updated readme.txt file
Added WP-CLI Commands: combine-js and webp
Better Polylang support

Version 5.5.1

Better Elementor support
Better Divi support
Better AMP support
Better sourcemapping removal

Version 5.5.0

New – Combine JavaScript Files
New – WebP quality control plus lossless option
New – What’s new and opportunities slider
Improved – better WPML support (mostly memcached)
Improved – better Elementor support
Improved – better Browser Caching rules for cPanel users

Version 5.4.6

Interface revamp for better accessability
Improved compatibility with page builders
Improved compatibility with latest Elementor
Added support for popular AMP plugins
Better WebP optiomization status reporting

Version 5.4.5

Improved elementor support
Improved flothemes support
Improved handling of @imports in combine css

Version 5.4.4

Improved transients handling
Added Jet Popup support

Version 5.4.3

Added Lazy loading functionality for iframes
Added Lazy loading functionality for videos

Version 5.4.2

Fixed bug with WebP image regeneration on image delete

Version 5.4.1

Added PHP 7.4 support for PHP Compatibility Checker
Improved WebP Conversion
Fixed bug with WebP image regeneration on image edit
Improved plugin localization

Version 5.4.0

Added WebP Support on All Accounts on Site Tools
Added Google PageSpeed Test
Improved Image Optimization Process
Improved SSL Certificate check

Version 5.3.10

Better PHP Version Management for Site Tools
NGINX Direct Delivery for Site Tools

Version 5.3.9

Improved check for SiteGround Servers

Version 5.3.8

Fixed a bug when Memcached fails to purge when new WordPress version requiring a database update is released
Added alert and check if you’re running SiteGround Optimizer on a host different than SiteGround
Improved compatibility with WooCommerce
Improved conditional styles combination
Improved image optimization process

Version 5.3.7

Added WooCommerce Square Payment & Braintree For WooCommerce Exclude by Default
Improved Google Fonts Optimization
Added Notice for Defer Render-Blocking Scripts Optimization
Added wp-cli commands for Google Fonts Optimization
Changed New Images Optimizer hook to wp_generate_attachment_metadata

Version 5.3.6

Improved Google Fonts loading with better caching
Improved Defer of render-blocking JS

Version 5.3.5

WordPress 5.3 Support Declared
Better Elementor Compatibility
Better Image Optimization Messaging
Better Google Fonts combination
Added PHP 7.4 support

Version 5.3.4

Improved Async load of JS files
Added Google Fonts Combination optimization
Moved lazyload script in footer
Improved CSS combination

Version 5.3.3

Improved browser cache handling upon plugin update
Added wp-cli commands for Dynamic Cache, Autoflush and Browser-Speciffic cache handling

Version 5.3.2

Fixed bug with https enforce for www websites
Improved JILT support

Version 5.3.1

Better SSL force to accommodate websites with WWW in the URL
Global exclusion of siteorigin-widget-icon-font-fontawesome from Combine CSS

Version 5.3.0

Refactoring of the Lazy Load functionality
Redesign of the Lazy Load screen
Improved WooCommerce product image Lazy Load
Gzip functionality update for Site Tools accounts
Browser caching functionality update for Site Tools accounts
Improved Browser caching functionality for cPanel accounts

Version 5.2.5

New Feature: Option to split caches per User Agent
New Feature: Option to disable lazy loading for mobile devices
Improved Memcached check

Version 5.2.4

Improved XML RCP checks compatibility

Version 5.2.3

Improved LazyLoad

Version 5.2.2

Improved Events Calendar Compatibility
Suppressed notices in the REST API in certain cases
Improved nonscript tag in LazyLoad

Version 5.2.1

Improved Cloudflare compatibility

Version 5.2.0

Exclude list Interface for JavaScript handlers
Exclude list Interface for CSS handlers
Exclude list Interface for HTML minification (URL like dynamic)
Exclude list interface for LazyLoading (Class)
Improved Thrive Architect support
Fixed notice when purging comment cache

Version 5.1.3

Improved Elementor support
Improved CSS optimization for inclusions without protocol
Excluded large PNGs from optimizations
Added better WP-CLI command documentation

Version 5.1.2

Added support for Recommended by SiteGround PHP Version
Improved LazyLoad Support for WooCommerce sites
Improved Image Optimization checks
Improved PHP Version switching checks
Added wp cli status command for checking optimization status
Fixed bug with Combine CSS

Version 5.1.1

Improved cache invalidation for combined styles
Cache purge from the admin bar now handles combined files too
Added filter to exclude images from Lazy Loading
Added filter to exclude pages from HTML Minification
Added Filter to query params from HTML Minification
Added PHP 7.3 support

Version 5.1.0

Added CSS Combination Functionality
Added Async Load of Render-Blocking JS
Added WooCommerce Support for LazyLoad
Added Filter to Exclude Styles from CSS Combination
Improved Lazy Load Functionality on Mobile Devices
Fixed Issue with WP Rocket’s .htaccess rules and GZIP
Fixed Issue with Query String Removal Script in the Admin Section
Fixed Compatibility Issues with 3rd Party Plugins and Lazy Load
Fixed Compatibility Issues with Woo PDF Catalog Plugin and HTML Minification
Improved Memcached Reliability
Improved Lazy Load for Responsive Images

Version 5.0.13

Modified HTML minification to keep comments
Interface Improvements
Better input validation and sanitation for PHP Version check
Improved security

Version 5.0.12

Better cache purge for multisite
Surpress dynamic cache notices for localhost sites

Version 5.0.11

Improved handling of third party plugins causing issues with the compatibility checker functionality
Optimized WP-CLI commands for better performance
Better notice handling for Multisite and conflicting plugins

Version 5.0.10

Fixed issue with Mythemeshop themes
Fixed issues with exclude URL on update
Fixed issues with exclude URL on update
Exclude Lazy Load from AMP pages
Exclude Lazy Load from Backend pages
Fixed WPML problems
Fixed Beaver Builder issues
Fixed Spanish translations
Fixed incompatibility with JCH Optimize

Version 5.0.9

Fixed woocommerce bugs
Improved memcached flush
Improved https force

Version 5.0.8

Better .htaccess handling when disabling and enabling Browser Cache and Gzip
Improved image optimization handling
Added option to stop the image optimization and resume it later
Fixed bug with memcached notifications
Fixed bug with conflicting plugin notices for non-admins
Fixed bug when user accesses their site through IP/~cPaneluser
Fixed bug with labels for HTML, CSS & JS Minification
SEO Improvements in the Lazy Load functionality

Version 5.0.7

Fixed bug with notifications removal
Fixed bug with modifying wrong .htaccess file for installations in subdirectory
Flush redux cache when updating to new version
Improved check for existing SSL rules in your .htaccess file
Added check and removal of duplicate Gzip rules in your .htaccess file
Added check and removal of duplicate Browser caching rules in your .htaccess file

Version 5.0.6

Memcache issues fixed. Unique WP_CACHE_KEY_SALT is generated each time you enable it on your site.
Better status update handling
Added option to start checks even if the default WP Cron is disabled (in case you use real cronjob)

Version 5.0.5

Fixed Compatibility Checker progress issues.
Fixed images optimization endless loops.
Changed php version regex to handle rules from other plugins.

Version 5.0.4

Fixed CSS minification issues.
Add option to re-optimize images.
Allow users to hide notices.

Version 5.0.0

Complete plugin refactoring
Frontend optimiztions added
Environment optimizations added
Images Optimizatoins adder
Full WP-CLI Support
Better Multisite Support
Better Interface

Version 4.0.7

Fixed bug in the force SSL functionality in certain cases for MS
Added information about the cookie our plugin uses in the readme file

Version 4.0.6

Bug fixes
Better https enforcement in MS environment

Version 4.0.5

Removed stopping of WP Rocket cache

Version 4.0.4

Minor bug fixes

Version 4.0.3

Switching recommended PHP Version to 7.1

Version 4.0.2

WPML and Memcache / Memcached bug fix

Version 4.0.1

Minor bug fixes
UK locale issue fixed

Version 4.0.0

Added proper Multisite support
Quick optimizations – Gzip and Browser cache config settings for the Network Admin
Network admin can purge the cache per site
Network admin can disallow Cache and HTTPS configuration pages per site
WPML support when Memcached is enabled
Cache is being purged per site and not for the entire network
Multiple performance & interface improvements
Security fixes against, additional access checks introduced
Fixed minor cosmetic errors in the interface

Version 3.3.3

Fixed minor interface issues

Version 3.3.2

Fixed bug with disabling the Force HTTPS option

Version 3.3.1

Fixed cache purge issue when CloudFlare is enabled
Added logging of failed attempts in XMLRPC API.

Version 3.3.0

Improved public purge function for theme and plugin developers
Added WP-CLI command for cache purge – wp sg purge

Version 3.2.4

Updated Memcache.tpl
Fixed a link in the PHP Check interface

Version 3.2.3

Improved WP-CLI compatibility

Version 3.2.1

Improved cron fallback, added error message if the WP CRON is disabled

Version 3.2.0

Adding PHP 7.0 Compatibility check & PHP Version switch

Version 3.0.5

Improved Certficiate check

Version 3.0.4

Fixed bug with unwrittable .htaccess

Version 3.0.3

Fixed bug in adding CSS files

Version 3.0.2

User-agent added to the SSL availability check

Version 3.0.1

PHP Compatibility fixes

Version 3.0.0

Plugin renamed to SG Optimizer
Interface split into multiple screens
HTTPS Force functionality added which will reconfigure WordPress, make an .htaccess redirect to force all the traffic through HTTPS and fixes any potential insecure content issues
Plugin prepared for PHP version compatibility checker and changer tool

Version 2.3.11

Added public purge function
Memcached bug fixes

Version 2.3.10

Improved Memcached performance
Memcached bug fixes

Version 2.3.9

Improved WordPress 4.6 compatibilitty

Version 2.3.8

Improved compatibility with SiteGround Staging System

Version 2.3.7

Fixed PHP warnings in Object Cache classes

Version 2.3.6

Minor URL handling bug fixes

Version 2.3.5

Improved cache testing URL detection

Version 2.3.4

CSS Bug fixes

Version 2.3.3

Improved Memcache work
Interface improvements
Bug fixes

Version 2.3.2

Fixed bug with Memcached cache purge

Version 2.3.1

Interface improventes
Internationalization support added
Spanish translation added by SiteGround.es
Bulgarian translation added

Version 2.3.0

Memcached support added
Better PHP7 compatibility

Version 2.2.11

Improved compatibility with WP Rocket
Bug fixes

Version 2.2.10

Revamped notices work
Bug fixes

Version 2.2.9

Bug fixes

Version 2.2.8

Bug fixing and improved notification behaviour
Fixed issues with MS installations

Version 2.2.7

Added testing box and notification if Dynamic Cache is not enabled in cPanel

Version 2.2.6

Fixed bug with Memcached causing issues after WP Database update

Version 2.2.5

Minor system improvements

Version 2.2.4

Minor system improvements

Version 2.2.3

Admin bar link visible only for admin users

Version 2.2.2

Minor bug fixes

Version 2.2.1

Added Purge SG Cache button
Redesigned mobile-friendly interface

Version 2.2.0

Added NGINX support

Version 2.1.7

Fixed plugin activation bug

Version 2.1.6

The purge button will now clear the Static cache even if Dynamic cache is not enabled
Better and more clear button labeling

Version 2.1.5

Better plugin activation and added to the wordpress.org repo

Version 2.1.2

Fixed bug that prevents you from enabling Memcached if using a wildcard SSL Certificate

Version 2.1.1

Cache will flush when scheduled posts become live

Version 2.1.0

Cache will be purged if WordPress autoupdates

Version 2.0.3

Minor bug fixes

Version 2.0.2

3.8 support added

Version 2.0.1

Interface improvements
Minor bug fixes

Version 2.0

New interface
Minor bug fixes
Settings and Purge pages combined into one

Version 1.2.3

Minor bug fixes
SiteGround Memcached support added
URL Exclude from caching list added

1.0

Plugin created.