Developer Tools
Formatting, encoding, generation, and debugging utilities for developers. JSON, XML, regex, JWT, cron, UUID, Base64, binary, hex, URL encoding, hashing, color conversion, and more — all running in your browser, no signup required.
Developer utilities that save time
These tools handle the everyday tasks developers reach for repeatedly: formatting messy JSON or XML, generating UUIDs for database records, decoding a JWT to inspect its claims, testing a regex pattern without spinning up a REPL, and converting between encodings without opening a terminal.
Encoding and decoding — Base64, binary, hex, and URL encoding are the most common formats you'll encounter when working with APIs, data URIs, query strings, and network data. All converters are bidirectional and process input as you type.
Data formatting — JSON Formatter, XML Formatter, and JSON↔YAML Converter pretty-print and validate structured data, making it easy to read API responses, config files, and log output. CSV to JSON handles bulk conversion for data pipelines.
Generation and inspection — UUID Generator produces cryptographically random v4 UUIDs. Hash Generator computes MD5, SHA-1, SHA-256, and SHA-512 hashes. JWT Decoder parses tokens into header, payload, and signature without needing a secret key.
Pattern and expression tools — Regex Tester highlights matches in real time with flag support. Cron Expression Explainer translates cron schedules into plain English. Unix Timestamp Converter converts between epoch milliseconds and human-readable dates.
All tools run entirely in your browser. No text, data, or input is sent to any server.