How to Use the JSON Diff Tool

1. Enter Your JSON Data

Paste or type your first JSON object into the "JSON A" field and your second JSON object into the "JSON B" field. You can input minified or formatted JSON - our tool handles both.

2. Beautify Your JSON

(Optional) Click the "Beautify" button below each JSON field to automatically format and validate your JSON. This makes it easier to read and helps identify any syntax errors before comparison.

3. Compare and Analyze

Click the "Compare JSONs" button to generate a detailed diff. Green highlights show added content, red shows removed content, and modified values are clearly marked. Select either "Unified" view to see all differences in a single view, or "Side-by-Side" view to compare both JSON objects simultaneously. The tool works entirely in your browser, ensuring your data remains private and secure.

About JSON Diff

A free, open-source online tool designed for developers, QA engineers, and anyone working with JSON data. Whether you're debugging API responses, comparing configuration files, or validating data transformations, our tool provides an intuitive interface with powerful quick comparison capabilities.

Unlike other JSON comparison tools, we prioritize your privacy by processing all data locally in your browser. No data is ever sent to our servers, and you can even use the tool offline once loaded. The tool supports large JSON files and provides real-time syntax highlighting and validation.