This suite of six free REST APIs provides tools for analyzing websites, including dead link checking, SEO audits, screenshot capturing, performance measurement, tech stack detection, and SSL certificate verification. Each API returns JSON responses without requiring an API key for basic usage.
What can you use it for?
Build quick visual tools, automated tests, or give your AI agent "eyes" by capturing webpages programmatically. You could make visual regression checks, generate OG preview images, or feed screenshots into a vision model for analysis. It’s easy to try — anonymous calls work out of the box, and API keys remove the small attribution watermark and increase limits. Keys expire after 30 days, so the simplest projects stay hassle-free.
API Stats
Health ▼
25
A score out of 100 from our daily tests over the last 30 days, based on error rate, reliability and speed.
Reliability ▼
0%
Share of our daily test calls in the last 30 days that succeeded, averaged over all endpoints of this API.
Error rate ▼
100%
Share of our daily test calls in the last 30 days that failed, averaged over all endpoints of this API.
Pricing ▼
Freemium
Docs list anonymous 20/day, free (email) 50/day, and paid one‑time tiers; keys expire after 30 days.
Auth ▼
API key
Sign up for a key and send it as a query parameter or header. The endpoints listed here work without it.
🤖 Robot last checked the docs and pricing 10 days ago