About this tool
Looking for a tool like WinMerge, but right in your web browser — with nothing to install? This free online text diff checker compares two pieces of text side by side and highlights exactly what changed — changed lines in amber, added in green and removed in red, down to the differing characters — just like a desktop file-compare tool.
It's a fast, private, browser-based WinMerge alternative for quickly comparing two versions of text, code, config or any pasted content. Everything runs in your browser — your text is never uploaded.
Features
- Line-by-line added / removed highlighting
- Ignore whitespace and ignore case options
- A quick count of additions and removals
- Updates live as you type
Common uses
- Compare two drafts of an article, email or contract
- Spot changes between two versions of code or config
- Check what a copy edit changed
How to use it
- Paste the original text on the left
- Paste the changed text on the right
- Tweak options — ignore whitespace or case if needed
- Read the diff — added and removed lines are highlighted below