Developer Tools
Essential utilities for modern developers
Format, encode, decode, parse, and validate data with professional-grade tools. All client-side for maximum security.
JSON Formatter
Format, validate, and beautify JSON with syntax highlighting.
Base64 Encoder/Decoder
Encode and decode Base64 strings. Essential for data encoding.
PopularURL Encoder/Decoder
Encode URLs for safe transmission. Decode URL-encoded strings.
Hash Generator
Generate MD5, SHA1, SHA256 hashes for password verification.
PopularRegex Tester
Test regular expressions with real-time matching and explanations.
JWT Decoder
Decode and inspect JWT tokens. View header, payload, and signature.
Markdown Preview
Write and preview Markdown with live rendering.
Markdown to HTML
Convert Markdown documents to HTML markup.
CSV to JSON
Convert CSV data to JSON format for APIs and databases.
JSON to CSV
Export JSON data as CSV for Excel and spreadsheets.
HTML Entity Encoder
Encode/decode HTML entities for safe HTML output.
Cron Expression Parser
Parse and understand cron expressions with human-readable descriptions.
Timestamp Converter
Convert between Unix timestamps and human-readable dates.
PopularYAML to JSON Converter
Convert between YAML and JSON formats with validation.
PopularSQL Formatter
Format and beautify SQL queries with syntax highlighting.
Number Base Converter
Convert between binary, octal, decimal, and hexadecimal.
PopularDiff Checker
Compare text and code side by side with highlighted differences.
PopularCSS & JS Minifier
Minify or beautify CSS and JavaScript code for production.
Markdown Table Generator
Visual editor for creating and editing markdown tables.
For Modern Development
API Development
Format and validate JSON responses, decode JWT tokens, convert between data formats. Perfect for testing APIs and debugging web services.
Data Transformation
Convert between CSV and JSON, encode URLs and Base64 strings, generate secure hashes for passwords and data integrity.
Testing & Validation
Test regular expressions with live matching, validate cron expressions, parse timestamps, and inspect JWT tokens.
100% Client-Side
All processing happens in your browser. Your sensitive data never leaves your device. No server uploads, complete privacy.