Tool library
Free online developer tools
Format JSON, encode Base64, convert timestamps, and generate TypeScript types with fast tools that run directly in your browser.
JSON Formatter
Format, validate, and beautify JSON with two-space indentation.
JSON Minifier
Compress valid JSON into a compact single-line string.
JSON Escape
Escape or unescape JSON string content for logs, payloads, and configs.
JSON to TypeScript
Generate TypeScript interfaces from a JSON object.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to readable text.
Image Base64 Converter
Convert images to Base64 data URLs and restore Base64 back into images.
Timestamp Converter
Convert Unix timestamps to dates and dates back to timestamps.
QR Code Generator / Decoder
Create QR codes from text and decode QR code images in your browser.