Free, browser-based tools for everyday developer tasks — validating and formatting JSON, encoding and hashing, decoding tokens, and more. Every tool below runs entirely on your device; nothing you paste is ever uploaded to a server.
🔒 100% client-side — nothing you paste ever leaves your browser
JSON Validator
Check if your JSON is valid and see detailed error messages instantly.
JSON Formatter
Beautify and format JSON for better readability and debugging.
JSON to XML
Convert JSON objects into clean, structured XML format instantly.
CSV to JSON
Convert CSV files into clean, structured JSON format in seconds.
Rows to CSV
Create a CSV string based on multi-row values with a custom delimiter.
Base64 Encode/Decode
Encode text to Base64 or decode it back — instantly, right in your browser.
URL Encoder/Decoder
Encode or decode URL components, handling special characters instantly.
JWT Decoder
Paste a JWT to see its decoded header and payload.
UUID Generator
Generate random UUID v4 identifiers, one or in bulk.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes of any text.
Timestamp Converter
Convert between Unix timestamps and human-readable dates.
Color Converter
Convert colors between HEX, RGB, and HSL, live.
Cron Explainer
Translate cron expressions into plain English.