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
Compare JSON online
Compare two JSON files side by side. Instantly highlight added, removed, and changed values — all privately in your browser.
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
Compare two JSON files, objects, or API responses side by side. Paste JSON or choose local .json files to instantly find added, removed, and changed values. Ignore key order when needed. Everything runs privately in your browser — your files are never sent to a server.
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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 a difference report JSON to share, save, or review later.
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How to Compare JSON Files
01
Paste or choose a file
Paste JSON or choose local .json files for the original and modified editors. Nothing leaves this device.
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 the diff or download a difference report.
Working with other formats? Convert YAML to JSON or Convert JSON to YAML, Convert XML to JSON, then compare the result here. Need a spreadsheet from JSON? Convert JSON to Excel.
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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.
Can I compare JSON files without uploading them to a server?
Yes. This secure JSON comparison runs entirely in your browser. Choose a local .json file or paste text — nothing is uploaded to a server.
Can I compare JSON objects when the key order is different?
Yes. Turn on Ignore key order (enabled by default) to treat objects with the same keys and values as identical, even when keys appear in a different order.
Is this JSON compare tool free?
Yes. The free JSON compare tool works without an account or sign-up.