How do I compare two JSON files?

Add both .json files to the converter, the original first and the new version second. The first file is treated as the original (A) and the second as the new version (B). Through the API, send both files in one ZIP.

What does the diff output look like?

A JSON report with the two file names, the total number of changes and a list of changes. Each change has a path such as .user.address.city, a type (added, removed or changed) and the old and/or new value.

How are arrays compared?

Arrays are compared position by position, so a reordered array is reported as changed values at each index.

How do I convert Two JSON files to JSON diff?

Upload your Two JSON files file above, click Convert, and download the JSON diff result instantly. No account or software needed.

Is converting Two JSON files to JSON diff free?

Yes. It is free and unlimited for files up to 5 MB, with no account required. Larger files get 3 free conversions per day; beyond that, credit packs start at $3 and credits never expire.

Are my files stored or shared?

No. Files are processed in server memory and deleted immediately after conversion. File contents are never written to disk or retained.

Do I need to install anything?

No software installation needed. OmniConvert runs in the browser — just upload, convert, and download.

OmniConvert

JSON diff

Free

Add two JSON files and get a structured diff showing added, removed, and changed values

Drop files or click to browse

Add 2 .json files, or one ZIP

Free and unlimited for files up to 5 MB. No account needed.

Related Developer conversions

URL Encode— Percent-encode a URL or string so it can be safely used in a query parameter or path segment
URL Decode— Decode a percent-encoded URL or query string back to plain readable text
Convert JSON to TypeScript— Generate TypeScript interfaces from a JSON object or array — useful for typing API responses
Convert Cron to Human— Translate a cron expression into a plain-English description of its schedule
Convert HAR to curl commands— Convert each request in a HAR network log to a shell curl one-liner
Convert OpenAPI to Markdown docs— Generate human-readable Markdown API documentation from an OpenAPI / Swagger spec
Convert SQL DDL to JSON schema— Parse SQL CREATE TABLE statements and output a JSON description of each table's columns and constraints
Convert JSON to GraphQL schema— Infer a GraphQL SDL type definition from a JSON object or array
Convert HTML to Minified HTML— Minify HTML by removing comments and collapsing whitespace
Convert CSS to Minified CSS— Minify CSS with safe optimizations and output compressed styles
Convert TypeScript to Zod— Generate Zod schemas from exported TypeScript interfaces and types
Convert Postman Collection to OpenAPI— Convert a Postman collection (v2.0 / v2.1) to an OpenAPI 3.0 YAML spec with paths, parameters, bodies and examples
Convert Sitemap XML to JSON— List every URL in a sitemap.xml or sitemap index as JSON, with lastmod, changefreq and priority
Convert Sitemap XML to CSV— List every URL in a sitemap.xml or sitemap index as a CSV, with lastmod, changefreq and priority
Convert robots.txt to JSON— Parse a robots.txt into JSON: user-agent groups with their allow and disallow rules, crawl delays and sitemaps

About this conversion

Add two JSON files and get a structured diff showing added, removed, and changed values. This converter processes your Two JSON files file server-side and returns a JSON diff file instantly — no account, no software installation, and no file storage. Files are deleted from our servers immediately after conversion.

How to convert Two JSON files to JSON diff

1. Upload — drag your Two JSON files file onto the converter above, or click to browse.
2. Convert — press Convert. Processing happens on secure servers in seconds.
3. Download — your JSON diff file downloads automatically. No sign-up required.

Convert Two JSON files to JSON diff from the command line

curl --fail-with-body \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -F "file=@input.zip" \
  -F "conversionId=json-diff" \
  https://www.omniconvert.cloud/api/convert -o output.json

The API needs a token from a credit pack, and each API conversion uses one credit. Converting on this page stays free. API documentation

Frequently Asked Questions

How do I compare two JSON files?: Add both .json files to the converter, the original first and the new version second. The first file is treated as the original (A) and the second as the new version (B). Through the API, send both files in one ZIP.
What does the diff output look like?: A JSON report with the two file names, the total number of changes and a list of changes. Each change has a path such as .user.address.city, a type (added, removed or changed) and the old and/or new value.
How are arrays compared?: Arrays are compared position by position, so a reordered array is reported as changed values at each index.
How do I convert Two JSON files to JSON diff?: Upload your Two JSON files file above, click Convert, and download the JSON diff result instantly. No account or software needed.
Is converting Two JSON files to JSON diff free?: Yes. It is free and unlimited for files up to 5 MB, with no account required. Larger files get 3 free conversions per day; beyond that, credit packs start at $3 and credits never expire.
Are my files stored or shared?: No. Files are processed in server memory and deleted immediately after conversion. File contents are never written to disk or retained.
Do I need to install anything?: No software installation needed. OmniConvert runs in the browser — just upload, convert, and download.

No account needed · Credits never expire · Share your token link across devices