Cron Expression Explainer
Translate cron schedules into plain English and see the next runs.
Developer tools
Format, decode, test and inspect code and data. 14 tools, all private and free.
JSON Formatter & Validator
Format, validate, minify and repair JSON with exact error positions.
JSON to TypeScript
Generate TypeScript interfaces from a JSON sample.
JWT Decoder
Decode and inspect JSON Web Tokens, and verify HMAC signatures.
Regex Tester
Test JavaScript regular expressions with live match highlighting.
SQL Formatter
Beautify or minify SQL for PostgreSQL, MySQL and more.
Unix Timestamp Converter
Convert Unix timestamps to dates and back, in any time zone.
Chmod Calculator
Convert Linux file permissions between octal and rwx notation.
Common Port Numbers
Which service uses which TCP/UDP port.
HTTP Status Codes
Searchable reference of every HTTP response status code.
MIME Type Lookup
Find the Content-Type for any file extension.
URL Parser
Break a URL into protocol, host, path, query parameters and hash.
URL Tracking Remover
Strip utm_*, fbclid, gclid and other tracking parameters from links.
UTM Link Builder
Add campaign tracking parameters to any URL.