FAQs & Support.

Want to know more about Lemin’s products and services? You’ll find a lot of answers to commonly asked questions on this page. You’ll also learn about how to get in touch should you need our support.

Questions & Answers

Below you’ll find lots and lots of answers to commonly asked questions.

Have an uncommon question? We love those. Get in touch, and a member of our team will happily answer it for you.

General questions
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.

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.

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.

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 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 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.

Instalment - using Captcha
What kind of architecture does Lemin Captcha have?

Lemin Captcha uses major cloud platforms for its architecture. Scalable and highly-robust, Lemin Captcha is designed to manage massive volumes of requests.

Is it possible to send my user a puzzle request only once?

Yes. Your users will only be asked to solve a puzzle challenge once. They can then skip requests for up to 30 days. This means they are not being asked every time they visit your site.

You can find more technical information in Question 3.

How do I request technical support?

Simple. Just send our support team a message. They will happily provide the support and guidance you need. Get in touch.

Is it possible to adjust the security level of my Lemin Captcha?

Yes. We offer all our users two options. Simply use our preset levels, or customise each parameter. Analyze past access logs and other activity to find your perfect set of parameters.

Is it possible to install Lemin Captcha in different places using the same account?

Yes. We offer our users a lot of freedom. Generate multiple Captchas through your dashboard. Each Captcha you create has unique JavaScript code. Simply place a Captcha’s code into the area you wish. You can change the setting and check traffic for each of your Captchas.

Can I use my brand’s imagery for my Lemin Captcha (logo, banners etc)?

Yes. Uploading your custom images is easy. Create customized Captchas that match your branding and brand experience. It’s fast and simple.

Can I customize the size of my Captcha images?

Yes. You can upload any custom image over 300 x 300 pixels and below 3MB.

What browsers does Lemin Captcha support?

Lemin Captcha supports every major desktop and mobile browser, as well as desktop and mobile apps.

  • Mozilla Firefox
  • Google Chrome
  • Microsoft Edge
  • Microsoft Internet Explorer
  • Apple Safari
  • Apple Safari and Safari Webview on iOS
  • Google Chrome on iOS
  • Android’s native browser and Google Chrome on Android
  • Electron apps on Windows, Mac and mobile devices
Can I see a sample of a Lemin Captcha JavaScript tag?

Yes! Wouldn't you know, there is one right here:



Will I be charged for each Captcha image I generate?

Once you have exceeded the free limit, you’ll receive payment requests via your dashboard.

What happens if I miss a payment?

Don’t worry. We’ll send you several reminders via email, before temporarily pausing your protection. Halting protection does not affect the login process.

Is there a limit to the number of Captchas I can create with one account?

No. There’s no limit to the number of Captchas you can create. Get creative and have fun.

Other questions?

Submit your questions in the form below

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