Free developer tools and utilities for coding, debugging, and web development. JSON converters, encoders, decoders, and more.
Convert between JSON and YAML formats instantly. Perfect for configuration files, API documentation, and data transformation. Supports bidirectional conversion with syntax validation.
Instantly encode text to Base64 or decode Base64 strings back to plain text. Perfect for encoding data, working with APIs, or debugging.
Encode text to URL-encoded format or decode URL-encoded strings instantly. Perfect for encoding URL parameters, query strings, and handling special characters in URLs.
Generate secure, random passwords with customizable length and character types. Perfect for creating strong passwords for accounts, API keys, and security tokens.
Decode and inspect JSON Web Tokens (JWT) to view the header, payload, and signature. Perfect for debugging authentication tokens and understanding token structure.
Generate cryptographic hashes (MD5, SHA-256, SHA-512) from text instantly. Perfect for data integrity checks, password hashing references, and cryptographic operations.
Generate UUIDs (Universally Unique Identifiers) instantly. Perfect for database IDs, unique identifiers, API keys, and development work.
Generate QR codes from text, URLs, or any data instantly. Perfect for sharing links, contact information, WiFi passwords, and more. Download as PNG image.
Convert between Unix epoch timestamps and human-readable dates instantly. Perfect for debugging, API development, and working with timestamps in various formats.
Convert text between different case formats instantly. Supports lowercase, uppercase, title case, sentence case, camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE.
Test and debug regular expressions instantly. Enter a regex pattern and sample text to see matches, groups, and results in real-time. Perfect for learning regex and validating patterns.
Preview markdown formatting in real-time. Write markdown text and see the rendered HTML output instantly. Perfect for writing README files, documentation, and formatted text.