Developer Tools
JSON formatting, regex testing, encoding, decoding, timestamp conversion. Everything runs in your browser, nothing uploaded, no sign-up required.
JSON and Data
Text and Regex
Encoders and Converters
Online JSON Formatter
Working with compressed or minified JSON is a pain. The JSON formatter takes a single-line blob and turns it into indented, human-readable output with syntax highlighting. It also validates structure: missing commas, trailing commas, unclosed brackets are all caught before they break your app. Use it for debugging API responses, inspecting config files, or cleaning up data pulled from a database.
Regex Tester and Debugger
Regular expressions are write-only, until you test them. Type a pattern, paste your text, and see matches highlighted in real time. The tester uses the JavaScript regex engine, meaning results match what you get in Node.js or browser JavaScript: same flags, same capture groups, same edge cases.
Encoding and Decoding Tools
Convert between text and Base64, encode URLs with percent-encoding, or inspect JWT tokens without hitting a server. The Base64 encoder handles both directions. The URL encoder covers query parameters, path segments, and fragment identifiers. The JWT decoder unpacks headers and payloads for quick inspection during auth debugging.
Generators and Converters
Generate UUIDs one at a time or in batches for database seeding and test fixtures. Convert Unix timestamps to human-readable dates, or pick a date and get its timestamp with support for both seconds and milliseconds precision. Small utilities you reach for constantly, kept within a single click.