Diff Guru
Compare and merge with precision
Free2,252 impressionslaunches Aug 3
Diff Guru is a free online tool that lets developers and writers compare and merge two text files or code snippets instantly in the browser.
- for
- Developers, writers, and anyone needing quick text or code comparisons
- pricing
- free
- license
- open source
Key features
- Instant side-by-side diff — Highlights additions, deletions and modifications in real time with line-by-line color coding.
- Unlimited merge capability — Merge changes between the two inputs as many times as needed without restrictions.
- Privacy-first processing — All comparisons run locally in the browser; no data is sent to or stored on servers.
- Wide language support — Syntax-aware diff for dozens of programming, markup and data languages such as JavaScript, Python, JSON, XML, Markdown, etc.
- Shareable diff links — Generate temporary, secure URLs to share comparison results with teammates.
- No sign-up or installation — Use the tool directly from the website without creating an account or installing software.
Use cases
- Review code changes during pull-request reviews
- Compare document drafts to spot edits and revisions
- Validate configuration file differences before deployment
- Check student assignments for plagiarism or changes
- Merge updates from two versions of a script quickly
Diff Guru FAQ
Is Diff Guru completely free to use?+
Yes, Diff Guru is entirely free with no hidden costs, usage limits or premium tiers.
Is my data safe and private?+
All comparisons are performed locally in the browser; the input is never sent to or stored on any server.
Do I need to sign up or install anything?+
No, you can start comparing immediately on the website without creating an account or installing software.
What file types can I compare?+
Any plain-text content, including source code, configuration files, documents, PDFs, Excel/CSV, images and more.
How does the merge function work?+
After differences are highlighted, you can click merge buttons to copy changes from one side to the other for selected blocks.
Summarized by DevHunt from diffguru.com · Sep 29, 2026. Details may change; check the official site.
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