JSON & data
JSON Formatter & Validator
Format, minify and validate JSON, with clear parse errors.
Open tool →Image & media
Image Compressor
Compress JPEG, PNG and WebP images in your browser. Files are never uploaded.
Compress one JPEG, PNG or WebP image at a time. Images are processed on your device and are never uploaded. Re-encoding also removes metadata such as the location where the photo was taken.
Drop an image here, or choose one from your device.
Choose an image to compress.
Privacy: this tool runs in your browser. The data you enter is not sent to a server.
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JSON & data
JSON Diff Checker
Compare two JSON inputs and highlight additions, removals and changes.
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CSV to JSON Converter
Convert CSV with headers and basic quoting into JSON.
Open tool →Developer utilities
JWT Decoder
Decode and inspect a JWT header and payload. This is not a signature check.
Open tool →Encoding & decoding
Base64 Encoder & Decoder
Encode and decode text in Base64, with Unicode support.
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UUID Generator
Generate UUIDs, including bulk generation.
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URL Encoder & Decoder
Encode and decode URL components, with examples.
Open tool →