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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. Created by Zack Grossbart. Get the source code.
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JSON Compare
jsoncompare.org
JSON Compare - Best JSON Diff Tools
JSON Compare helps to Compare and find diff in JSON data. It also provides different view which helps to find different in your JSON data.
Discussions

Diff two large JSON array or objects
Yes Firstly you have to load json data in python dictionary using json module/package After that jsondiff module/package help you check different This module/package also compare list,set,etc.๐Ÿ‘Œ If will return empty dictionary {} if there is no different๐Ÿ‘ import jsondiff oldJson = {1:"a",2:"b",3:"c"} newJson = {1:1,4:4} r = jsondiff.diff(oldJson,newJson) if r : print(r) else: print("404,No Different Found!") Output: {1: 1, 4: 4, delete: [2, 3]} ๐Ÿ˜€ json.diff take 1st arg oldJson means from which we are checking different & 2nd newJson. There are 3 syntax ๐ŸŽฒ : compact ( default ) Any Change in Value of key & new insrted key will display normaly symmetric Inserted & delete show differently change show normally explicit ๐Ÿ‘€ It is detailed Inserted Deleted Changed Show differently import jsondiff oldJson = {1:"a",2:"b",3:"c"} newJson = {1:1,4:4} r = jsondiff.diff(oldJson,newJson,syntax="explicit") if r: print(r) else: print("404,No Different Found!") Output : {insert: {4: 4}, update: {1: 1}, delete: [2, 3]} ๐Ÿ˜ƒ Finally ๐Ÿ”ฅ,Now you doubt about how to access them You can access them using symbols eg. r[jsondiff.symbols.insert] OR from jsondiff import symbols r[symbols.insert] There are some other symbols which use in different compare like list,set, etc Note : if you try using insert in compact & update in compact & symmetric then you will get KeyError ๐Ÿ˜” because those not exist there import jsondiff from jsondiff import symbols oldJson = {1:"a",2:"b",3:"c"} newJson = {1:1,4:4} r = jsondiff.diff(oldJson,newJson,syntax="explicit") if r: print("Deleted keys are ",r[symbols.delete]) else: print("404,No Different Found!") Output : Deleted keys are [2, 3] ๐Ÿฅณ Thanks for reading ๐Ÿ˜‚ More on reddit.com
๐ŸŒ r/learnpython
3
3
February 26, 2022
What is the best tool for comparing two large json files?
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. More on reddit.com
๐ŸŒ r/learnprogramming
41
13
October 7, 2025
how to compare two deeply nested json objects?
If all you need is to check whether they equal or not, just do bytes.Equal . If you are looking for an accurate diff you can use testfy's JSON Equal here . More on reddit.com
๐ŸŒ r/golang
13
5
July 17, 2023
Best way to diff two JSON files and write differences data to third file?
The difflib module is a python standard module that has methods to help compare data, such as context_diff() or ndiff(). More on reddit.com
๐ŸŒ r/learnpython
7
1
August 20, 2017
People also ask

Can I compare JSON files with different structures?
Yes, TestMu AI's Online JSON Diff can compare JSON files with different structures. The tool highlights the differences between the files, making it easy to understand the changes that have been made.
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testmu.ai
testmu.ai โ€บ home โ€บ free tools โ€บ json compare
JSON Compare - JSON Diff Online | TestMu AI
How is JSON Compare different from other comparison tools?
JSON Compare is specifically designed for JSON data structures. It understands JSON's hierarchical and nested nature and can provide a deep comparison, unlike plain text comparison tools.
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testmu.ai
testmu.ai โ€บ home โ€บ free tools โ€บ json compare
JSON Compare - JSON Diff Online | TestMu AI
Are there any limitations to the JSON Compare tool?
The primary limitation would be the browser's performance when handling very large JSON structures. For vast datasets, consider using dedicated software or applications.
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testmu.ai
testmu.ai โ€บ home โ€บ free tools โ€บ json compare
JSON Compare - JSON Diff Online | TestMu AI
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SemanticDiff
semanticdiff.com โ€บ online-diff โ€บ json
SemanticDiff - Online JSON Diff
If the JSON data is difficult to ... breaks), click the Prettify buttons ... You should now see a side-by-side comparison of your JSON objects and arrays. The diff still shows the original data you entered, but the two data sets are now aligned with each other. Red and green highlighting helps you see where the data differs...
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JSON Diff
json-diff.com
JSON Diff - Compare and Find Differences in JSON Files Online
JSON Diff is a free and open-source tool to compare two JSON objects and find differences. Visualize changes in JSON files, easy and fast.
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Baeldung
baeldung.com โ€บ home โ€บ json โ€บ jackson โ€บ compare two json objects with jackson
Compare Two JSON Objects with Jackson | Baeldung
January 8, 2024 - Letโ€™s understand how to use a custom Comparator. Letโ€™s look at how to use a custom Comparator to compare two JSON elements having numeric values. ... We need to observe that the values of attribute score in inputs s1 and s2 are not the same.
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GitHub
github.com โ€บ lukascivil โ€บ json-difference
GitHub - lukascivil/json-difference: A simple way to find the difference between two objects or json diff ยท GitHub
Returns the structural difference between oldStruct and newStruct. ... import { getDiff } from 'json-difference' const coffee = { color: { color1: 'black', color2: 'brown' }, special: true } const oil = { color: { color1: 'red', color2: 'blue' }, special2: false, especial3: [{}] } // Get JsonDiff delta const diff = getDiff(coffee, oil) const diff2 = getDiff(coffee, oil, { isLodashLike: true }) console.log(diff) console.log(diff2)
Starred by 57 users
Forked by 5 users
Languages ย  TypeScript 91.8% | JavaScript 7.3% | HTML 0.9%
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GitHub
gist.github.com โ€บ 95c58862f54cee57ae68e58bee2378f2
Compare two JSON Objects and get Difference. ยท GitHub
Clone this repository at <script src="https://gist.github.com/goyalzz/95c58862f54cee57ae68e58bee2378f2.js"></script> Save goyalzz/95c58862f54cee57ae68e58bee2378f2 to your computer and use it in GitHub Desktop. ... Compare two JSON Objects and get Difference.
Find elsewhere
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Testmu
testmu.ai โ€บ home โ€บ free tools โ€บ json compare
JSON Compare - JSON Diff Online | TestMu AI
Quickly find differences in JSON files with TestMu AI's JSON Compare. Accurate & easy to use, it's essential for seamless development and QA processes. ... JSON Compare is a tool that allows comparing two JSON structures, thus outputting the ...
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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.
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JSON Formatter
jsonformatter.org โ€บ json-compare
JSON Compare Online to find different between two json
JSON Compare tool to compare two JSON data with ease. It helps to find the different between two json to find the accurate results. This JSON Diff Online tool is very powerful and easy to use tool.
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Reddit
reddit.com โ€บ r/learnpython โ€บ diff two large json array or objects
r/learnpython on Reddit: Diff two large JSON array or objects
February 26, 2022 -

I have a Python lambda function downloading a large excel file and converting it to JSON.

This file will be downloaded at least once a day (as the data can change)

I need to push the changed/updated data to an API.

Is there a way for me to compare two JSON files and output the diff?

It would be perfect if it would output multiple arrays of objects.

1 array of objects that have changed (I donโ€™t care what has changed, just need to know that it has)

1 array of removed/deleted objects.

Top answer
1 of 1
4
Yes Firstly you have to load json data in python dictionary using json module/package After that jsondiff module/package help you check different This module/package also compare list,set,etc.๐Ÿ‘Œ If will return empty dictionary {} if there is no different๐Ÿ‘ import jsondiff oldJson = {1:"a",2:"b",3:"c"} newJson = {1:1,4:4} r = jsondiff.diff(oldJson,newJson) if r : print(r) else: print("404,No Different Found!") Output: {1: 1, 4: 4, delete: [2, 3]} ๐Ÿ˜€ json.diff take 1st arg oldJson means from which we are checking different & 2nd newJson. There are 3 syntax ๐ŸŽฒ : compact ( default ) Any Change in Value of key & new insrted key will display normaly symmetric Inserted & delete show differently change show normally explicit ๐Ÿ‘€ It is detailed Inserted Deleted Changed Show differently import jsondiff oldJson = {1:"a",2:"b",3:"c"} newJson = {1:1,4:4} r = jsondiff.diff(oldJson,newJson,syntax="explicit") if r: print(r) else: print("404,No Different Found!") Output : {insert: {4: 4}, update: {1: 1}, delete: [2, 3]} ๐Ÿ˜ƒ Finally ๐Ÿ”ฅ,Now you doubt about how to access them You can access them using symbols eg. r[jsondiff.symbols.insert] OR from jsondiff import symbols r[symbols.insert] There are some other symbols which use in different compare like list,set, etc Note : if you try using insert in compact & update in compact & symmetric then you will get KeyError ๐Ÿ˜” because those not exist there import jsondiff from jsondiff import symbols oldJson = {1:"a",2:"b",3:"c"} newJson = {1:1,4:4} r = jsondiff.diff(oldJson,newJson,syntax="explicit") if r: print("Deleted keys are ",r[symbols.delete]) else: print("404,No Different Found!") Output : Deleted keys are [2, 3] ๐Ÿฅณ Thanks for reading ๐Ÿ˜‚
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DEV Community
dev.to โ€บ keploy โ€บ diff-json-a-complete-guide-to-comparing-json-data-3e31
Diff JSON โ€“ A Complete Guide to Comparing JSON Data - DEV Community
October 15, 2024 - โ€ข JSON-diff (npm library): This JavaScript package helps compare JSON objects and outputs differences. Itโ€™s widely used in Node.js environments. โ€ข Postman: A popular API testing tool that includes JSON comparison features.
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npm
npmjs.com โ€บ package โ€บ json-diff
json-diff - npm
% json-diff --help Usage: json-diff [-vCjfonskKp] first.json second.json Arguments: <first.json> Old file <second.json> New file General options: -v, --verbose Output progress info -C, --[no-]color Colored output -j, --raw-json Display raw JSON encoding of the diff -f, --full Include the equal sections of the document, not just the deltas --max-elisions COUNT Max number of ...s to show in a row in "deltas" mode (before collapsing them) -o, --output-keys KEYS Always print this comma separated keys, with their value, if they are part of an object with any diff -x, --exclude-keys KEYS Exclude the
      ยป npm install json-diff
    
Published ย  May 15, 2023
Version ย  1.0.6
Author ย  Andrey Tarantsov
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JSON Editor Online
jsoneditoronline.org โ€บ home โ€บ compare โ€บ json-compare
JSON compare: how to compare two JSON files? | Indepth
January 18, 2023 - When both sides are an object, the algorithm will collect the unique keys of both objects, and then iterate over those, checking whether the left and right property have the same value.
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ExtendsClass
extendsclass.com โ€บ json-diff.html
JSON diff - Online JSON Compare tool
This free online tool will allows you to do this easily. JSON diff tool makes a semantic comparison, it compares every attributeโ€“value pairs of objects. It compares each element according to their position in the arrays. It sorts and formats the JSON strings in order to find the semantic ...
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QuickTooly
quicktooly.com โ€บ tools โ€บ json-compare
JSON Compare Tool - JSON Diff Checker | QuickTooly
August 5, 2025 - Compare two JSON objects instantly with this easy-to-use and free tool. Identify differences, additions, and deletions between JSON structures in seconds.
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Code Maze
code-maze.com โ€บ home โ€บ how to compare two json objects using c#
How to Compare Two Json Objects Using C# - Code Maze
February 21, 2023 - The CompareDeserializedJsonObjects() method uses the Equals method which weโ€™ve implemented in the Car class to compare the two deserialized objects. Printing results of the comparison to the console, weโ€™d get: Plain Objects Result: The two ...
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JSONLint
jsonlint.com โ€บ json-diff
JSON Diff - Compare Two JSON Objects | JSONLint | JSONLint
January 6, 2026 - Say you're debugging why a user's profile looks different. Compare the two responses: ... The diff immediately shows: role changed from "admin" to "viewer", and lastLogin was added. ๐Ÿ’ก Order doesn't matter โ€” JSON objects are unordered by spec.{"a":1,"b":2} equals {"b":2,"a":1}. Our diff normalizes this.
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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?