Free Developer & Programming Tools
Everyday utilities for programmers: format and validate JSON, beautify SQL queries, build and explain cron expressions, and test regular expressions against sample text with live match highlighting. Use them as a fast scratchpad while you code, review a pull request or debug an API response.
JSON Formatter, Validator & Tree Viewer
Beautify, minify, validate, and inspect JSON payloads with line error reporting.
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SQL Query Formatter & Beautifier
Format and indent SQL queries for PostgreSQL, MySQL, SQLite, and SQL Server.
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Cron Expression Parser & Schedule Generator
Translate standard 5-part cron expressions into plain human readable schedules.
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JavaScript Regular Expression (Regex) Tester
Test and debug JavaScript regular expressions against target text strings with group captures.
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RFC-Compliant Email Syntax & Format Validator
Validate email address syntax against RFC 5322 specifications, TLD rules, and disposable domain detection.
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