JSON Diff — Compare Two JSON Files

Free online JSON diff tool. Compare two JSON objects side by side with structural formatting and word-level highlighting. 100% offline and private.

Compare two JSON documents. Both sides are pretty-printed first so formatting noise disappears and you only see real structural differences, highlighted down to the changed value.

Why use this converter

• 100% client-side — your data never leaves your browser
• Free and unlimited, no account required
• Works offline as an installable PWA, on desktop and mobile
• No ads and no tracking

Also known as

json diff · json compare · compare two json files · json difference checker online

More developer tools

• JSON Formatter
• YAML Formatter
• XML Formatter
• CSV Viewer
• JSON ⇄ XML
• SQL Formatter
• HTML Formatter
• CSS Formatter
• Regex Tester
• Smart Diff
• String Utilities
• Base64 Encoder & Decoder
• JWT Decoder
• Hash Generator
• URL Encoder & Decoder
• Number Base Converter
• Unix Timestamp Converter
• Cron Parser
• UUID Generator
• Lorem Ipsum Generator
• Fake Data Generator
• Color Picker
• JSON → XML
• XML → JSON
• JSON → YAML
• YAML → JSON
• CSV → JSON
• JSON Diff
• XML Diff
• Text Diff
• Base64 Encode
• Base64 Decode
• URL Encode
• URL Decode
• Hex → Decimal
• Decimal → Hex
• HEX → RGB
• RGB → HEX