Word Compare – Compare Texts Word by Word
Paste two texts and instantly see which words were added, removed, or left unchanged. This tool is perfect for checking paraphrase accuracy, proofreading small edits, or seeing how a sentence has evolved. All processing happens in your browser – no signup, no uploads, complete privacy.
Why use a word‑by‑word diff?
Line‑level diffs tell you which paragraphs changed, but they don't show you the exact words. Character‑level diffs can be too noisy. Word‑by‑word diff hits the sweet spot – it highlights exactly which words were added or deleted, making it perfect for reviewing text changes, paraphrasing checks, and content editing.
- Focused on content – punctuation and formatting differences can be ignored so you see only meaningful word changes.
- Flexible matching – optionally ignore case and punctuation to find the real semantic difference.
- Instant preview – the diff updates as you type (with a short delay), or click Compare for manual control.
- Privacy first – all processing is done locally; your texts never leave your device.
How to compare words (step‑by‑step)
1. Enter your texts
Place the original text in the left box and the revised text in the right box.
2. Choose options
Enable "Trim punctuation" to strip commas, periods, etc. before comparison. Turn on "Case‑insensitive" if capitalization differences shouldn't count.
3. View the diff
Added words are highlighted in green, deleted words in red with strikethrough, and unchanged words remain neutral.
4. Copy or clear
Click "Copy diff text" to get the diff as plain text with +/- markers, or "Clear all" to start a fresh comparison.
Example: a sentence tweak
| Original | Modified | Diff (visual) |
|---|---|---|
| The quick brown fox jumps over the lazy dog. | The speedy brown fox leaps over the sleeping dog. | The quick speedy brown fox jumps leaps over the lazy sleeping dog. |
Common use cases
- Paraphrase checking: See exactly which words were replaced when rephrasing a sentence.
- Content editing: Verify that only the intended words were changed in a blog post or article.
- Proofreading: Spot accidental word deletions or insertions in a final draft.
- Translation comparison: Compare original text with a back‑translation word by word.
- Educational use: Show students how a sentence can be revised while preserving meaning.
Pro tips
- Trim punctuation if you only care about word changes; the diff will be cleaner and more focused.
- For a line‑level overview first, use our Line Compare tool, then zoom into specific lines with this word‑by‑word tool.
- If the diff output is too long, try comparing smaller chunks of text at a time.