Free Captcha Tools

100% free · Runs entirely in your browser · No signup required

⚡ TL;DR: Two free utilities for developers working with captchas — a Sitekey Extractor that finds reCAPTCHA, hCaptcha, Turnstile and FunCaptcha keys in any page source, and a Cost Calculator that estimates your monthly solving bill. Nothing you paste here ever leaves your browser.

🔑 Tool 1: Sitekey Extractor

Every captcha-solving API needs the target site's sitekey. Instead of digging through page source manually, paste the HTML below (right-click the target page → View page source → copy all) and we detect the keys for you.

Tips if no key is found

Some sites load the captcha widget only after user interaction — use DevTools (F12 → Elements tab) and copy the rendered HTML instead of the raw page source.
reCAPTCHA v3 keys often appear inside JavaScript as grecaptcha.execute('KEY', ...) — this tool scans for that pattern too.
For reCAPTCHA Enterprise, look for enterprise.js?render=KEY in script tags.

🧮 Tool 2: Captcha Cost Calculator

Estimate your monthly bill before you commit. Pick a captcha type, enter your volume, and compare CaptchaKings flat pricing against the typical competitor average.

Captcha type

Solves per month

$6.00

CaptchaKings / month

$20.00

Competitor average / month*

$14.00

You save / month

*Competitor figures are mid-range estimates from public pricing pages (August 2026) — check each vendor for current rates. CaptchaKings rates are our published flat prices.

🎁 Tool 3: Free Solver Trial

Every new account gets $0.50 in free credit instantly — no credit card required. That is roughly 1,600 image captchas or 800 reCAPTCHA v2 solves to benchmark speed and accuracy on your own targets.

Claim Free $0.50 Credit

Frequently Asked Questions

How do I find a reCAPTCHA sitekey on a website?

Open the page, right-click and choose View page source, then search for data-sitekey. The 40-character value next to it is the sitekey. Alternatively paste the page source into the extractor above and it detects reCAPTCHA, hCaptcha, Turnstile and FunCaptcha keys automatically.

Is this Sitekey Extractor really free?

Yes. The tool runs 100% in your browser with JavaScript. Nothing you paste is uploaded to any server — you can even use it offline. No account and no signup required.

What is a sitekey and why do solving APIs need it?

A sitekey is the public identifier of a captcha widget registered by the website owner. Solving APIs like CaptchaKings need the sitekey plus the page URL to generate a response token that the target website will accept as valid.

How much do 10,000 captcha solves cost?

At CaptchaKings, supported token types (Tencent, GeeTest, xCaptcha, MTCaptcha, Amazon AWS WAF) cost a flat $1.00 per 1,000 solves and image/text OCR costs $0.80 per 1,000, so 10,000 solves cost $10 or $8 respectively. reCAPTCHA solving is planned and not yet available (see /supported-captchas). New accounts receive $0.50 in free credit — 500 token or 625 image solves — with no credit card required.

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