Developer Tools

Format JSON, encode Base64, decode JWT tokens, format SQL, and more. Every tool runs in your browser.

22 Developer Tools

JWT Decoder Decode JSON Web Tokens instantly

JSON Formatter Pretty-print and validate JSON

Base64 Encoder/Decoder Encode and decode Base64 strings

URL Encoder/Decoder Encode and decode URLs

CSS Gradient Generator Create l?near and rad?al CSS gradients

SQL Formatter Beautify and format SQL queries

Cron Expression Generator Build cron schedule expressions visually

HTML to Markdown Convert HTML to Markdown and back

UUID v4 Generator Generate random UUID v4 identifiers

MD5 Hash Generator Generate MD5 hashes from text

SHA-256 Hash Generator Generate SHA-256 hashes from text

Regex Tester Test regular expressions with highlighting

HEX to RGB Converter Convert HEX colors to RGB and HSL

YAML to JSON Convert YAML to JSON and back

XML Formatter Format and beautify XML

XML to JSON Convert XML to JSON and back

Unix Timestamp Converter Convert Unix timestamps to human-readable dates instantly

JSON Diff Compare two JSON objects and see added, removed, and changed keys

Markdown Editor Write and preview Markdown with live rendering and GFM support

Unicode Converter Encode and decode Unicode escapes, HTML entities, CSS escapes, and URL encoding

JSON to CSV Convert JSON to CSV

JSON Validator Validate and format JSON

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About Developer Tools

Format JSON, encode Base64, decode JWT tokens, format SQL, and more. Every tool runs in your browser. All tools on Toolatom run entirely in your browser — your files and data never leave your device just clean utilities that do one thing well.