Julian Engel

Traditional CAPTCHAs block bots. Clawptcha does the opposite — it verifies you ARE a bot. Perfect for the age of AI agents. Challenges only bots can pass: ⚡ Reaction time <100ms (humans avg 250ms) ⏱️ Click at exactly 5.000s (±1ms) 🔢 Factor primes in <5 seconds 🔐 Compute SHA-256 in <500ms Drop-in widget, 2 lines of code. Works with any AI agent, automated system, or bot-friendly service. Built for bots, by bots. 🦞

Tired of deploying your site just to see your OG image is broken on Twitter? OG Image Preview gives you a test link for any OG image. Upload your image, get a unique URL like ogimagepreview.com/test/abc123, then share it on Twitter, Slack, or Discord to see exactly how it renders - before you deploy. ✓ 100% free, no credit card ✓ Works on all platforms ✓ Sign in with Google or GitHub ✓ Store up to 10 images Test your OG images in real conditions.