Free utilities we use every day, open to anyone. No sign-up, no files leaving your browser, no third-party trackers.
Discover and remove metadata from images, PDFs and Office documents. 100% in your browser.
Look up any ASN, IP or prefix: summary, upstreams, announced prefixes and their geolocation.
Compute IPv4/IPv6 networks, split into subnets (VLSM) and check if an IP is in range. In your browser.
Audit a domain's SPF, DMARC, DKIM and MX, with traffic-lights and an overall grade. In your browser.
Look up all of a domain's DNS records, compare propagation (Cloudflare vs Google) and DNSSEC status. In your browser.
Check ping, HTTP, DNS, traceroute and MTR of a target from probes worldwide. In your browser.
Encode/decode Base64 and URL, and inspect JWT tokens (header, payload, expiry). 100% in your browser.
Format, minify and validate JSON and XML, with the exact error line and column. 100% in your browser.
Generate strong passwords with an entropy meter and compute hashes (MD5, SHA-1/256/384/512). 100% in your browser.
Resolve the PTR of any IPv4/IPv6 and check forward-confirmation (FCrDNS). In your browser via DoH.
See every response header of a URL and the full redirect chain.
Analyse CSP, HSTS, X-Frame-Options and more, with traffic-lights and an overall security grade.
Inspect the certificate, expiry, chain, supported protocols (TLS 1.0–1.3) and cipher.
Fetch and analyse a domain's robots.txt, its directives and the referenced sitemaps.
Validate an XML sitemap (or sitemap index): well-formedness, sitemaps.org rules, <loc>/<lastmod> and the referenced child sitemaps.