Text Compare and Merge

Use this text compare and merge tool to compare two texts side by side, spot every difference at the word level, and merge changes from one panel into the other. Whether you are reviewing code, reconciling document revisions, or combining edits from two drafts, this free online diff tool keeps compare and merge in one private, browser-based workspace.

Compare Text Side by Side

Paste or load an original and a modified version into the two editors. Additions, deletions, and modifications are highlighted live so you can see exactly what changed without scanning line by line. Options like ignore whitespace, ignore case, and ignore blank lines help you focus on meaningful differences.

• Code review: Catch unintended edits before you commit. Word-level highlighting shows which values, functions, or strings were altered.
• Editing & proofreading: Place a draft next to a revision and review every change at a glance.
• Config & docs: Diff configuration files, scripts, or notes without uploading them anywhere.

Merge Text Changes Online

When you hover a highlighted difference, use the chunk toolbar to copy that change or merge it left-to-right or right-to-left. Build a combined result from both sides, then use Reset to default if you need to undo merges and restore the pre-merge text. Download or copy either panel when you are done.

How to Compare and Merge Text

1. Paste text or choose files for the Original and Modified panels.
2. Review live diffs — navigate with Prev / Next, or swap sides if needed.
3. Hover a change and click Merge change to apply it to the other side (or Copy to clipboard).
4. Copy, download, or keep editing until the merged text looks right.

Everything runs in your browser — nothing is uploaded, no signup is required, and your content stays private. Use it free anytime you need to compare text online or merge text differences quickly.