All tools

Every tool runs in your browser — files are never uploaded. Free to use, no signup required.

🔎 Instant checks

🔎

Website Status Checker

Check any URL from the edge: status, response time, redirects, headers.

🌐

DNS Lookup

Resolve any domain's DNS records from the edge.

🧾

HTTP Header Inspector

Inspect response headers and grade security best practices.

📈 Monitoring

📈

Uptime Monitor

Schedule checks, track history, and publish a status page.

More tools on the way

UpNimbus grows a few tools at a time, prioritized by what people ask for: multi-region latency, keyword and JSON-path assertions, email and Slack incident alerts, response-time charts, and status-page subscribers are next on the list.Tell us what you need — requests genuinely set the roadmap.