Free Code Compare Tool
Compare code files online. Paste code or upload text-based source files.
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All code processing is done locally in your browser. No code is uploaded to any server.
Upload file or paste code
Supports all text-based code files
Upload file or paste code
Supports all text-based code files
Code comparison for review and handoff
The code comparison page is built for quick paste-or-upload workflows when you need to inspect changes without opening a full Git toolchain.
It works well for reviewing snippets, generated files, and alternate implementations. The editor displays a plain-text diff without language-specific syntax highlighting.
- Check changes in scripts, config files, or generated output.
- Review before-and-after snippets during refactors.
- Review pasted snippets or uploaded text files in a browser.
What the code compare tool supports
Paste code or upload text-based source files, then review the differences in side-by-side or inline views. The comparison does not parse programming-language syntax.
The comparison runs in your browser, so the source text is not sent to DiffQuery for processing.
Related guides
Code comparison FAQ
Do I need an account to compare code?
No. The tool is available directly in the browser without registration.
Can I compare pasted code as well as files?
Yes. You can paste code directly into the editors or upload text-based source files.
Who is this code diff page for?
It is useful for developers, reviewers, students, and anyone who needs a quick browser-based way to inspect code changes.