JSON Diff & Validator
Compare JSON files semantically. Ignore key order and format instantly.
A secure, browser-based tool to compare and validate JSON. We sort keys alphabetically and format your data to find true differences, filtering out noise caused by ordering or whitespace.
Original JSON
Changed JSON
Smart JSON Comparison
Comparing JSON files using a standard text diff tool is often frustrating. If the keys are in a different order, or if one file is minified while the other is pretty-printed, the entire file looks different even if the data is identical.
Diff Guru's JSON Diff & Validator solves this. We parse your JSON, sort the keys alphabetically, and format both inputs identically before comparing. This ensures you only see the semantic differences in your data, filtering out the noise.
Why use this tool?
Ignores Key Order
Two objects with the same data in different orders are treated as identical.
Validates Syntax
Instantly identify missing commas, unclosed braces, or bad formatting.
Auto-Formatting
Minified JSON is automatically expanded and indented for readability.
How to Diff JSON Files
Paste
Copy and paste your JSON data into the two editors. You can use minified or unformatted text.
Compare
Click the compare button. We validate, sort, and format your JSON instantly.
Analyze
View the results. Differences are highlighted, and keys are aligned for easy reading.
JSON Diff FAQs
Yes! A standard text diff would mark { "a": 1, "b": 2 } and { "b": 2, "a": 1 } as different. Our tool parses the JSON, sorts all keys alphabetically, and formats the output before comparing. This means semantically identical JSON objects will correctly show as a match.
No. Just like our other tools, the JSON Diff & Validator runs entirely in your browser (client-side). Your data never leaves your computer, ensuring complete privacy for sensitive API responses or configuration files.
Absolutely. If you paste invalid JSON, the tool will display an error message indicating what went wrong. You can use it to fix syntax errors before performing a comparison.
Yes, arrays are supported. However, unlike objects, the order of items in an array matters in JSON. We do not reorder arrays, as doing so would change the data's meaning. We only sort the keys within objects.
To ensure a clean comparison, we 'beautify' your JSON using a standard 4-space indentation. This makes it easier to read and ensures that differences are due to data changes, not just inconsistent spacing or line breaks.