Tools for Developers & IT Pros
84 toolsNetwork diagnostics, browser testing, and hardware validation tools. DNS lookup, IP analysis, system diagnostics, display calibration, and accessibility checking.
JSON Formatter
tools/json-formatter.hint
Base64
tools/base64.hint
URL Encoder
tools/url-encoder.hint
Regex Tester
tools/regex-tester.hint
JWT Decoder
tools/jwt-decoder.hint
UUID Generator
tools/uuid-generator.hint
Hash Generator
tools/hash-generator.hint
Creation Date Certificate
tools/creation-certificate.hint
Russian–Latin Transliterator
Convert Cyrillic to Latin in 9 standards side by side — passport, GOST, ICAO, BGN/PCGN and more. Compare them, reverse the conversion, export a PDF name card.
IP Lookup
Look up any IP address or domain to see its location, ISP, VPN status, and more.
DNS Lookup
Look up DNS records for any domain. All record types supported, results from multiple resolvers.
WHOIS Lookup
Look up registration details for any domain name including registrar, dates, nameservers, and DNSSEC status.
Redirect Checker
Enter a URL to see the full redirect chain with HTTP status codes, response times, and server details.
Checksum Calculator
Hash any file with 6 algorithms. Verify downloads, compare files, find duplicates.
IPv6 Test
Test your IPv6 support, detect connection type, compare latency, and check for leaks.
Cookie Checker
Scan any website to discover all cookies, trackers, and privacy risks in seconds.
Browser Fingerprint
Real entropy bits, live cohort comparison, defense test, and visual fingerprint art — see exactly how trackable your browser is.
What Is My Browser
Instantly detect your browser, OS, screen, hardware, codecs, and web API support. Copy all info for tech support or download a PDF report.
WebRTC Leak Test
Check if WebRTC is exposing your real IP address. Detect local, public, and mDNS candidates with real-time monitoring.
System Diagnostics
Check CPU, GPU, memory, battery, storage, network, and browser capabilities. Get a health score, run a benchmark, and receive personalized recommendations.
Speed Test
Check download, upload, ping, jitter, packet loss, and bufferbloat in one 30-second test.
MAC Address Lookup
Identify the manufacturer of any network device by MAC address, generate random MACs for testing, and convert between all standard formats.
File Transfer
Drop a file or folder, share the 6-letter code or QR — the transfer flows directly between browsers.
VPN Checker
Check if your VPN is working and test for IP, DNS, and WebRTC leaks. Instant anonymity score with detailed results.
