Sounds like you want a "structural diff" tool which finds differences based on the nested structure of the JSON objects themselves, not the serialized text representation. For instance: https://github.com/andreyvit/json-diff You could also hack something together with a JSON manipulation tool such as jq . There are a lot of possibilities depending on what kind of differences you're looking for. For instance, you could transform each file into a list of nested "key paths" (e.g. {"a": {"b": "foo"}} becomes something like a.b: "foo") and then sort and diff those lists instead of the original files. Answer from teraflop on reddit.com
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JSON Diff
jsondiff.com
JSON Diff - The semantic JSON compare tool
Validate, format, and compare two JSON documents. See the differences between the objects instead of just the new lines and mixed up properties.
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Reddit
reddit.com โ€บ r/learnprogramming โ€บ what is the best tool for comparing two large json files?
r/learnprogramming on Reddit: What is the best tool for comparing two large json files?
October 7, 2025 -

I have two json files that contain the output of an api call to a report in our property management software from two different days. I want to see which items were added to and removed from the second file compared to the first. each file is about 100,000 lines. I tried using diff, and that does work, but It's really hard to read given the large number of differences. Is their a better or easier tool for this?

Discussions

How to compare two json objects ignoring the order of fields
Hello everyone, Iโ€™m passing a request body with a JSON object containing n number of fields. The body format is included in the body and this specific JSON object is in the pre-requisite script. Upon hitting the post request an ID gets generated. Now, I use get API with this ID to fetch the ... More on community.postman.com
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0
October 23, 2023
Compare json files
There's the jq tool you can use to print out a json with sorted keys jq -S . A.json. Then compare the results with any text-diffing tool you like. On my linux I'd maybe do diff <(jq -S . A.json) <(jq -S . B.json) More on reddit.com
๐ŸŒ r/json
5
4
March 20, 2024
windows - Offline JSON diff tool - Software Recommendations Stack Exchange
If you upload a 5MB file and want to edit something, it lags massively (~1000ms). Thomas W. โ€“ Thomas W. 2025-02-06 18:27:47 +00:00 Commented Feb 6, 2025 at 18:27 ยท @ThomasWeller doesn't sound like a fatal flaw. Filing an issue could resolve it quickly, I hope ... I build this web app recently to correctly compare json ... More on softwarerecs.stackexchange.com
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How to compare 2 JSON files with the same content but in a different order?
As you can see, both JSON files have the same content but in a different order. I would like to compare them with WINMERGE but prior the comparison I would like to reorganize the 2nd JSON to be in the same order that the 1st JSON file, so there will be no difference detected between them. More on github.com
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10
2
January 3, 2024
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JSON Compare
jsoncompare.org
JSON Compare - Best JSON Diff Tools
Online json compare tool is used to find json diff online. Input json code, json file compare, compare 2 json files, directly json url to compare & beautify.
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SemanticDiff
semanticdiff.com โ€บ online-diff โ€บ json
SemanticDiff - Online JSON Diff
Compare JSON files in your browser using our free semantic diff tool. It ignores whitespace and only highlights changes to the keys and values.
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HyperTest
hypertest.co โ€บ json-comparison-tool
JSON Comparison Tool | HyperTest
Yes, the tool is designed to handle structural differences between JSON files. It can identify added/removed properties, changed values, and modifications to the JSON hierarchy, making it ideal for comparing evolving API responses or configuration versions.
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JSON Compare
jsoncompare.com
JSON Compare - View, Format & Validate Diff Files | JSON Compare
Compare two JSON files side by side with real-time diff highlighting. Identify additions, deletions, and modifications instantly. Free online JSON comparison tool.
Find elsewhere
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Keploy
keploy.io โ€บ home โ€บ community โ€บ how to compare two json files?
How to compare two JSON files? | Keploy Blog
June 9, 2024 - Find differences between two JSON files using Python, VS Code, and free online JSON diff tools. Ideal for developers and testers.
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Microsoft Store
apps.microsoft.com โ€บ detail โ€บ 9pfxllffdj57
JSON Compare Tool - Compare JSON objects or files
May 23, 2025 - JSON Compare Tool is a powerful yet simple app that helps developers and data analysts easily compare two JSON objects or files side by side. Whether you're debugging APIs, inspecting configuration changes, or simply checking data differences, ...
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Leapcell
leapcell.io โ€บ blog โ€บ how-to-compare-json-a-practical-guide
How to Compare JSON: A Practical Guide | Leapcell
July 25, 2025 - JSONCompare: Allows you to compare and merge JSON files, highlighting differences and conflicts.
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Postman
community.postman.com โ€บ help hub
How to compare two json objects ignoring the order of fields - Help Hub - Postman Community
October 23, 2023 - Hello everyone, Iโ€™m passing a request body with a JSON object containing n number of fields. The body format is included in the body and this specific JSON object is in the pre-requisite script. Upon hitting the post request an ID gets generated. Now, I use get API with this ID to fetch the ...
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PyPI
pypi.org โ€บ project โ€บ json-files-compare
json-files-compare ยท PyPI
February 5, 2023 - Json-compare is a simple package that allows you to easily and fastly compare two .json files. Support key and multi-key comparison.
      ยป pip install json-files-compare
    
Published ย  Feb 05, 2023
Version ย  1.0.1
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JSON Editor Online
jsoneditoronline.org
JSON Editor Online: edit JSON, format JSON, query JSON
You can compare JSON files by opening them in the left and right panel of the editor. Click the "Compare" button in the "Differences" section between the two panels, and make sure you switch both panels to "Tree" mode.
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Microsoft Power Platform
community.powerplatform.com โ€บ forums โ€บ thread โ€บ details
Comparing 2 JSONs with same keys to get the differences
October 14, 2024 - Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later ยท Congratulations to our 2026 Super Users
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TextCompare
textcompare.org โ€บ json
Online Json Compare Tool
Just click Compare button to view side by side comparison. View the differences highlighted in colors. Privacy: This tool does all the processing on your browser, so nothing is saved on our server unless you choose to save. Hightlight: This tool highlights the differences between the two Json files.