Redirect Checker

Trace redirect chains, see status codes, and verify final destinations for any URL.

Redirects redirect-checker.org

Security Headers Analyzer

Check your site's security headers (CSP, HSTS, Xโ€‘Frameโ€‘Options, etc.) and get a grade.

Security securityheaders.com

SSL/TLS Test

Test your SSL/TLS configuration, certificate validity, and cipher suite support.

SSL/TLS ssllabs.com/ssltest

DNS Lookup

Check DNS propagation from multiple locations worldwide to verify A, AAAA, CNAME, and MX records.

DNS whatsmydns.net

PageSpeed Insights

Analyze your site's performance, Core Web Vitals, and get optimization recommendations.

Performance developers.google.com/speed

WebPageTest

Run detailed performance tests from multiple locations and devices with waterfall charts.

Performance webpagetest.org

ReqBin โ€“ HTTP Client

Send custom HTTP requests, test APIs, and examine responses with a simple online client.

API Testing reqbin.com

HTTPBin โ€“ Testing Service

Test HTTP clients with a variety of endpoints that return different status codes and headers.

Testing httpbin.org

CDN Performance

Compare CDN providers, check latency, and find the fastest CDN for your audience.

CDN cdnperf.com

Uptime & Status Check

Monitor your website's uptime and response times from multiple global locations.

Monitoring uptrends.com/tools/uptime

JSON Formatter & Validator

Format, validate, and beautify JSON data to ensure your API payloads are correct.

JSON jsonformatter.org

NSLookup

Quickly check DNS records, dig, and reverse lookups for any domain.

DNS nslookup.io

* All tools are external services. We are not affiliated with them, but they are widely used and trusted in the developer community.