Side-by-Side JSON Diff
View differences between two JSON files with an easy-to-read side-by-side diff view.
Private JSON comparison in your browser
JSON Compare Online
Compare two JSON files and find differences instantly.
JSON COMPARECompare your original and modified JSON
100% local processingOriginal JSON
Modified JSON
Files stay in your browser No sign-up Free to use
Compare JSON Files Instantly
This JSON compare tool helps you compare two JSON files, JSON objects, and API responses to find differences quickly. Everything runs in your browser, so your data stays yours.
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JSON Compare Features
JSON Object Comparison
Compare JSON objects and API responses, including deeply nested values.
Ignore Key Order
Compare JSON files even when keys appear in a different order.
Nested JSON Diff
Find differences inside arrays, objects, and deeply nested fields.
Local Processing
Private JSON comparison that never sends your files to a server.
Export Differences
Download JSON diff results to share, save, or review later.
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How to Compare JSON Files
01
Paste or upload
Paste or upload two JSON files into the original and modified editors.
02
Click Compare JSON
Click Compare JSON to analyze differences with your chosen options.
03
Review the result
Review added, removed, and changed values, then copy or download the diff.
Working with other formats? Convert YAML to JSON or Convert XML to JSON, then compare the result here.
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JSON Compare Example
Spot a changed value at a glance. A simple JSON comparison makes differences easier to review.
ORIGINAL
{
"name": "John",
"age": 30
}MODIFIED
{
"name": "Mike",
"age": 30
}JSON DIFF
- "name": "John"
+ "name": "Mike"Frequently asked questions
What is a JSON compare tool?
A JSON compare tool compares two JSON files or objects and highlights added, removed, and changed values. If the text is hard to read first, use the JSON Formatter, then compare here.
How do I compare two JSON files?
Paste the original and modified JSON into the editors above, then click Compare JSON. If you are unsure the input is valid, run it through the JSON Validator first.
What is JSON diff?
JSON diff is a readable representation of the differences between two JSON documents.
Does this JSON comparator upload my files?
No. This secure JSON comparison runs entirely in your browser. Your files are never uploaded.
Can I compare JSON objects?
Yes. The tool compares objects, arrays, primitive values, and nested structures.
Is this JSON compare tool free?
Yes. The free JSON compare tool works without an account or sign-up.