Cloudflare Turnstile
A CAPTCHA alternative that checks visitors without puzzles. · Cloudflare · Security
Overview
Turnstile is free for most sites.
Good fit
Use to protect forms from bots without annoying users.
- forms
- sign-up pages
Not a fit
Avoid if you need more than 20 widgets for free.
Quickstart · 3 steps
- Add a widget in the Turnstile dashboard.
- Add the script and widget to your form.
- Check the token on your server with siteverify.
Other free security options
Free tierWhat you get freeRiskCard
Let's Encrypt · Security
50 certificates per registered domain per week · 5 duplicate certificates (same identifiers) per week · 90-day certificate validity
Billing risk: None
No card
GitGuardian · Security
Up to 25 developers · Unlimited real-time secret scanning · Up to 500 historical scan detections
Billing risk: None
No card
Snyk · Security
5 projects · Snyk Code (SAST): 100 tests/month · Snyk Open Source (SCA): 200 tests
Billing risk: None
No card
Mozilla · Security
Free to scan any domain · Scan history is public · Free v2 API for scans
Billing risk: None
No card