Lemin Cropped Captcha


Lemin Captcha is uniquely playful, robust, and effective. Through gamification, we are curing the pains of traditional CAPTCHA.


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Upload the lemin-captcha plugin to your blog, activate it, and then enter your “dashboard.leminnow.com” API key.

1, 2, 3: You’re done!


Can I use Lemin Captcha for free?

Yes. Anyone can trial Lemin Captcha for free. We make experiencing our uniquely human and accessible Captcha easy.

Can Lemin Captcha be used globally?

Yes. No matter where you are in the world, Lemin Captcha is available and ready to keep you and your users safe.

How long does it take to integrate Lemin Captcha with my website?

Less than 30 minutes. We designed the process to be seamless and simple. Please do get in touch if you need a little extra help getting up and running. Our trusted service partners are always on hand to help.

How can I measure the results of my investment in Lemin Captcha?

We update the dashboard in real-time, so you always have the latest data. Check each metric, and learn about threats and attempted attacks. Gain a detailed understanding of the ways that Lemin Captcha is keeping your website and users safe.

How does Lemin Captcha compare with reCAPTCHA or hCaptcha?

They ask you ‘Are you a robot?’. We treat you and your customers like humans. To solve Lemin Captcha, you simply need to be human. Lemin believe in less barriers and more play. Security should happen automatically, without you ever being left wondering ‘What do I need to do next?’

How safe is Lemin Captcha?

Unlike many of our competitors, our main concern is keeping you and your users safe. Ad-based captchas technically gain their revenue through bots. Lemin Captcha greatly reduces the risk posed by bots and other security threats.

Does Lemin Captcha use cookies?

Yes. We use cookies so that your users are only asked to solve puzzle challenges one time. They can then skip them for up to 30 days. Our verification process works by matching users’ cookie-ids on their web browsers and hashed user-ids from the Lemin server. When users login to your website, our JS tags will automatically generate anonymized user IDs. We never store any of your raw data.




以下人員參與了開源軟體〈Lemin Cropped Captcha〉的開發相關工作。


〈Lemin Cropped Captcha〉外掛目前已有 4 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〈Lemin Cropped Captcha〉外掛本地化為台灣繁體中文版


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



Release Date – 3 Sept 2021

  • Login form
  • Registration form
  • Reset password form
  • Lost Password form
  • Comment form


Release Date – 8 Oct 2021

  • Contact Form 7
  • Ability to select lemin captcha for logged in logged out and All users


Release Date – 18 Nov 2022

  • Contact Form 7 fixed