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FitMyKBVerify
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Build your CAPTCHA

Spec sheetFitMyKB VerifyScale 1 : 1

Choose your CAPTCHA

I'm protecting a form.

Suggested for sign-up: Smart checkbox, normal difficulty.

01Type

Speed for people
Stops bots
Time to pass
about 1 second

02Puzzle

03Display

04Look

05Difficulty

Normal: about 0.1 s of work on a laptop, 0.5 s on a phone.

The real widget, not a picture
yourwebsite.in/signup
Create an account

Tick the box, then press the button.

{
  "success": …
}
waiting for a token…
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Smart checkbox or puzzle?

Smart checkboxPuzzle
What people seeOne tick (or nothing, in invisible mode)A quick picture puzzle: slide a piece, turn a picture upright, tap shapes in order, or pick every picture with a tree, car… (or a mix)
Time for a personAbout 1 secondAbout 3 to 5 seconds
Simple bots and scriptsStopped: they must do the work and look humanStopped
Browser automation toolsScored as suspicious, then get a puzzleAlways get a puzzle; "Mixed" changes the style every time
Keyboard and screen readersYesYes: arrow keys slide and rotate, Tab and Space pick grid pictures (tap needs a pointer)
Best forSign-up, login, contact, comments, newslettersPayments, password reset and OTP, anything bots target hard
PriceThe same: every plan includes both, and you can switch any time

Free to start. Pay only as you grow.

10,000 checks a month free; paid plans from ₹99 (US$2.99) a month, in rupees or dollars, monthly or yearly, with no auto-renewal.

See pricing Get free keys

Two lines of code

Protect your first form in five minutes

Free up to 10,000 checks a month on 1 website, to try it properly. Going over never breaks your forms.

Get free keys Read the docs
<!-- in your page -->
<script src="https://fitmykb.com/captcha/api.js" async defer></script>
<div class="fmk-captcha" data-sitekey="YOUR_SITE_KEY"></div>