Free Online Developer Tools
Essential browser-based developer tools for formatting, validating, and converting code. No installation needed.
JSON Formatter
Format, validate, and minify JSON with auto-indentation.
Regex Tester
Test regular expressions in real-time with match highlighting.
JWT Decoder
Decode JWT tokens to inspect header, payload, and expiration.
UUID Generator
Generate UUID v4, ULID, and NanoID with bulk generation support.
Cron Expression Builder
Build and decode cron expressions with a visual editor.
CSS/JS Minifier
Minify CSS and JavaScript code to reduce file sizes.
XML Formatter
Format, validate, and minify XML documents.
CSV to JSON Converter
Convert between CSV and JSON formats with custom delimiters.
YAML Formatter
Format YAML and convert between JSON and YAML.
SQL Formatter
Format and beautify SQL queries for multiple database dialects.
HTML Entity Encoder
Encode and decode HTML entities for safe web content.
Unix Timestamp Converter
Convert Unix timestamps to dates and dates to timestamps.
API Request Builder
Test API endpoints with custom methods, headers, and body.
File Converter
Convert between image, data, and text formats in your browser.
Code Snippet Library
Save, organize, and search code snippets with syntax highlighting.
Browser-Based Tools for Developers
Whether you need to quickly format a JSON response from an API or validate a configuration file, these tools let you do it without leaving your browser. They are designed to handle large inputs efficiently and support common developer workflows.