See Exactly What Changed in Your Code
Side-by-side diff with syntax highlighting for 50+ languages. Paste any two code snippets and spot differences instantly.
Compare Your CodeReviewing code changes shouldn't be painful. Whether you're comparing versions before a commit, debugging by checking what changed, or reviewing snippets from different sources, you need a tool that makes differences crystal clear. PowerDiff highlights every addition, deletion, and modification so nothing slips through.
Auto-detects your language
JavaScript, Python, Go, Rust — highlighting just works. No manual configuration needed.
VS Code-quality editor
Powered by Monaco with familiar shortcuts, line numbers, and smooth scrolling.
Compare anything
Git commits, Stack Overflow snippets, documentation examples — paste and compare.
Private by design
Your code stays in your browser. Nothing is ever sent to our servers.
Frequently Asked Questions
What programming languages does PowerDiff support?
PowerDiff supports syntax highlighting for 50+ languages including JavaScript, TypeScript, Python, Java, C++, Go, Rust, Ruby, PHP, and many more.
Is PowerDiff free to use?
Yes, PowerDiff is completely free with no registration, no ads, and no usage limits.
Can I share my code diffs with others?
Yes! PowerDiff can generate shareable URLs that encode your diff client-side. No data is stored on any server.
Does it detect moved code?
Yes. PowerDiff uses Monaco Editor's advanced diff algorithm with experimental move detection to identify code that was relocated rather than changed.
Ready to compare your code?
No account needed. Just paste and diff.
Compare Your Code