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ProgrammerKit

Compare Anything Engine

Side-by-side diff for JSON, XML, contracts, specs, job offers — with decision matrix.

Free · Runs in your browser · Last updated

Heuristic structural diff — runs entirely in your browser. No content is uploaded. For best results with contracts or spec sheets, use one Key: Value per line.

About this tool

Paste any two documents (JSON, XML/HTML, YAML, plain text, contracts, product spec sheets, job offers, API docs). Auto-detects format, performs structural diff and generates a decision matrix highlighting matches, differences and unique fields. 100% in-browser, no upload.

Privacy

All processing for Compare Anything happens locally inside your browser using JavaScript. Your input is never uploaded to a server, logged, or shared with third parties.

Frequently asked questions

Is the Compare Anything free to use?

Yes. Compare Anything is completely free for both personal and commercial projects. There are no usage limits, no sign-up, and no premium tier.

Is my data safe when I use Compare Anything?

All processing happens locally in your browser using JavaScript. Your input is never uploaded to our servers, logged, or shared with any third party.

Does Compare Anything work offline?

Once the page has loaded, the tool runs entirely client-side. You can disconnect from the internet and it will keep working in the same browser tab.

Which browsers are supported?

Compare Anything works in all modern browsers, including the latest versions of Chrome, Firefox, Safari, Edge, Brave, and Opera, on desktop and mobile.

Do I need to install anything?

No. Compare Anything runs in any modern web browser with no installation, browser extension, or account required.

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