Tools
Free technical utilities.
A collection of tools for networking, DNS, security and development. No sign-up, no limits, and many run 100% in your browser — your data never leaves your machine.
15
Tools available
100%
Free
0
Sign-up required
AS215691
Own infrastructure
Toolbox
All the tools
Utilities we use every day, open for you. Many run 100% in your browser — your data never leaves your device.
Inspect and remove metadata
Discover and remove metadata from images, PDFs and Office documents. 100% in your browser.
BGP Viewer
Look up any ASN, IP or prefix: summary, upstreams, announced prefixes and their geolocation.
Subnet Calculator
Compute IPv4/IPv6 networks, split into subnets (VLSM) and check if an IP is in range.
Email Auditor
Audit a domain's SPF, DMARC, DKIM and MX, with traffic-lights and an overall grade.
DNS Lookup
Look up a domain's DNS records, compare propagation and DNSSEC status.
Global Check
Check ping, HTTP, DNS, traceroute and MTR of a target from probes worldwide.
Base64 / URL / JWT
Encode/decode Base64 and URL, and inspect JWT tokens. 100% in your browser.
JSON / XML Formatter
Format, minify and validate JSON and XML, with the exact error line and column.
Passwords & Hashes
Generate strong passwords with an entropy meter and compute hashes (MD5, SHA-1/256/384/512).
Reverse DNS / PTR
Resolve the PTR of any IPv4/IPv6 and check forward-confirmation (FCrDNS).
HTTP Header Inspector
See all response headers of a URL and the full redirect chain.
Security Headers Scanner
Analyse CSP, HSTS, X-Frame-Options and more, with traffic-lights and an overall grade.
SSL/TLS Checker
Review the certificate, expiry, chain, supported protocols and cipher.
robots.txt Validator
Download and analyse a domain's robots.txt, its directives and referenced sitemaps.
Sitemap Validator
Validate an XML sitemap (or index): format, sitemaps.org rules and referenced sub-sitemaps.
Next step
Need something custom?
If a tool is missing or you need to integrate it into your processes, let's talk.