Can I test a find-and-replace?

Yes — enter a replacement string with $1, $2 group references to preview the output.

RegEx Tester

Build and test JavaScript regular expressions in real time, see every match and capture group, and try replacements.

Can I test a find-and-replace?: Yes — enter a replacement string with $1, $2 group references to preview the output.

JSON Validator — Validate, parse, and prettify JSON — load it from a URL or curl command, or convert a Python dict (single quotes, True/False/None) to JSON. Identifies syntax errors with precise line number reporting.
Code Beautifier — Automatically format your JavaScript, CSS, and HTML with customizable indentation and style rules.
Minifier — Reduce bundle sizes by removing whitespace, comments, and optimizing code structure for production.
SQL Formatter & Beautifier — Pretty-print and indent SQL queries across dialects (PostgreSQL, MySQL, T-SQL, BigQuery, and more) with configurable keyword casing.
XML Formatter — Beautify and validate XML with configurable indentation, or minify it to the smallest valid output — entirely in your browser.
JSON Diff — Compare two JSON objects (or Python dicts) structurally to spot added, removed, and changed keys — or switch to line and word mode for plain text and code.
Base64 Converter — Quickly encode and decode strings or files to Base64 format for safe data transmission.
URL Encoder / Decoder — Percent-encode or decode text, URLs, and query strings — with batch line mode and a parsed parameter breakdown.