ReCaptcha v2 for Contact Form 7


Contact Form 7 v5.1 dropped support for reCaptcha v2 along with the [recaptcha] tag December 2018. This plugin brings that functionality back from Contact Form 7 5.0.5 and re-adds the [recaptcha] tag.

If this plugin is installed before updating Contact Form 7 from v5.0.5 to v5.1.1 then it will carry over your old API keys. At that point you will just need to head to this plugins settings page to tell the website to use reCaptcha v2.

Once installed and configured it should be the same reCaptcha functionality you are used to in previous versions of Contact Form 7.



  • 設定頁面


Contact Form 7 is required to work with this plugin.

  1. Install this (ReCaptcha v2 for Contact Form 7) plugin
  2. Update Contact Form 7 to the latest version
  3. Re-add the reCaptcha version 2 API keys (if no keys are currently set). For more information you may read How to Generate Google reCAPTCHA v2 Keys by IQComputing and Contact Form 7 documentation
  4. Using the left-hand admin navigation in the Contact Form 7 subpages click “reCaptcha Version” (Contact -> reCaptcha Version)
  5. Once on the “ReCaptcha v2 for Contact Form 7” settings page, select from the select list “reCaptcha Version 2” and click “save”

Once the version 2 API keys are set, the version 2 has been selected in the plugin settings, all [recaptcha] tags will be replaced with the expected Google reCaptcha on all forms.


這個外掛能夠使用 Google reCAPTCHA v3 的金鑰嗎?

No and yes. Google reCaptcha has specific keys for each API. If you are doing an upgrade from a previous version of Contact Form 7 to the current version you will need to re-add the Version 2 API keys using the traditional method. That being said you can set the plugin usage to default and it will use the inherit Contact Form 7 reCaptcha Version 3 API.

何處可取得專屬的 Google reCAPTCHA v2 金鑰?

Under Contact -> Integration you can see a “reCAPTCHA” service box where you may either “Setup Integration” following instructions from the Contact Form 7 documentation. If you already have keys set you will need to click the “Remove Keys” button and re-add them following the Contact Form 7 documentation.

在外掛中輸入 Google reCAPTCHA v2 金鑰後,沒有發生預期的執行結果。

If you have added the Version 2 keys and you still do not see the reCaptcha show up on your forms please check the following:

  1. In WordPress admin, under Contact -> reCaptcha Version please ensure that you have “reCaptcha Version 2” selected and saved.
  2. On your contact forms please ensure that you have the [recaptcha] tag somewhere in the form.

Should the above be correct, at this point it’s time to open a support thread for us to look into the issue further.


2021 年 3 月 10 日
Recaptcha v2 is preferable for most websites so that: A floating Google logo (free advertising) doesn't appear on every page of your site Slightly better success blocking spam I don't know why Contact Form 7 removed this feature, but this plugin brings it back perfectly.
2021 年 1 月 16 日
Go to Contact -> ReCaptcha Version and set Select reCaptcha Usage: V2 Go to Contact -> Integration -> ReCaptcha -> Add keys from google Add in contact form the ReCaptcha = [recaptcha]
2021 年 1 月 12 日
Super! Easy to use, saves api keys, huge thanks to the developer 👍👍
2020 年 11 月 2 日
Works nice, just a problem, that "Please verify that you are not a robot." text can't be translated.
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ReCaptcha v2 for Contact Form 7 外掛目前已有 14 個本地化語言版本。 感謝全部譯者為這個外掛做出的貢獻。

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1.3.3 (2020-03-01)

  • Updated reCaptcha HTML to be wrapped in span tag as Contact Form 7 expects.
  • Updated javascript to reflect HTML change above.

1.3.2 (2020-02-25)

  • Updated the remove action hook priority for wpcf7_recaptcha_enqueue_scripts from 10 to 20

1.3.0 (2020-12-21)

  • Removed iqfix_wpcf7_recaptcha_callback_script() function
  • Enqueued reCaptcha controls based on whether google reCaptcha is enqueued.