Development Tools
Essential tools for development work like JSON formatting, encoding, hash generation, and more. All tools run in your browser with no server communication required.
JSON Formatter
Format and minify JSON data with syntax error checking. Make JSON readable and validated.
URI Encoder
Encode URLs using percent encoding. Convert Japanese characters and special symbols to URL-safe format.
URI Decoder
Decode percent-encoded URLs back to original text. Reverse URL encoding process.
Base64 Encoder
Encode text to Base64 format. Essential for safe binary data transmission.
Base64 Decoder
Decode Base64 formatted data back to original text.
JSON ⇔ XML Converter
Convert between JSON and XML formats. Streamline data format transformation workflows.
Hash Generator
Generate MD5, SHA-1, SHA-256 and other hash values. Perfect for data integrity verification.
URL Parameter Parser
Parse and organize URL query parameters in a readable format.
Timestamp Converter
Convert between Unix timestamps and human-readable date formats.
CSS Minifier
Compress and optimize CSS code. Reduce file sizes for better performance.
Text Replace Tool
Batch replace text strings with support for regular expressions.
Color Code Converter
Convert between HEX, RGB, HSL and other color code formats.
YAML ⇔ JSON Converter
Convert between YAML and JSON formats. Perfect for Kubernetes configs and CI/CD pipelines.
JWT Decoder
Decode JWT (JSON Web Token) to inspect header, payload, and signature. Auto-displays expiration dates.