Word Compare
Paste two versions of a text and instantly see every word that was added, removed, or kept the same. This isn't a character‑level diff – we compare whole words so you can quickly spot rephrased sentences, terminology changes, or small edits. Everything runs right in your browser, and your data never leaves your computer.
Why use this Word Compare tool?
When you're comparing two drafts of a document, a character‑level diff can be noisy – every comma or capital letter change gets highlighted. Word Compare ignores the noise and shows you only the meaningful word changes. It's perfect for writers, editors, translators, and anyone who needs to see how a text evolved without squinting at tiny punctuation diffs.
Because the comparison is done entirely in your browser, there's no upload, no latency, and your sensitive text stays private. No one – not even us – ever sees what you paste.
- Whole‑word intelligence – treats "quickly" and "fast" as different words, but ignores differences like "Hello" vs "hello" when case‑insensitive is on.
- Flexible comparison modes – flip a switch to ignore punctuation or show only the words that actually changed.
- Instant visual feedback – added words appear in green, deleted words in red with strikethrough, and unchanged words stay normal.
- Not just for prose – use it to compare code comments, list items, tabular data, or any text where you care about word‑level changes.
How Word Compare differs from line‑ or character‑level diffs
Most diff tools work on lines (like our Text Diff Checker) or on characters (like Character Compare). Word Compare bridges the gap – it breaks each text into words and aligns them using a smart algorithm (similar to `diff` but at the word level). That means:
- You can see that "jumped" became "leaped" even if the rest of the sentence stayed the same.
- A single added word won't throw off the alignment of the entire paragraph.
- Punctuation can be ignored so that "Hello," and "Hello" count as identical, reducing false positives.
Try it side‑by‑side with our other compare tools – you'll often find that word‑level comparison gives you the clearest picture of what was actually rephrased.
How to compare texts word‑by‑word (step‑by‑step)
1. Enter the two versions
Paste the original text in the upper box and the modified version in the lower box. They can be single sentences, paragraphs, or whole articles – the tool handles thousands of words smoothly.
2. Tweak the options
Check "Case insensitive" to treat words the same regardless of capitalization. "Ignore punctuation" strips commas, periods, and other marks before comparing. "Show only changed words" hides everything else so you can focus on what's new or deleted.
3. View the word diff
The result appears instantly on the right. Green words were added, red words were deleted, and plain words are identical. You can scroll through even very long comparisons.
4. Copy or download
Use "Copy as text" to get a plain‑text version with +/- markers (e.g., `[-quick-] {+fast+}`) that you can paste into an email or document. Or download it as a .txt file for your records.
Example: before and after
| Original | Modified | Word diff (case insensitive, ignore punct.) |
|---|---|---|
| The quick brown fox jumps over the lazy dog. | The fast brown fox leaped over a lazy cat. | quick fast brown fox jumps leaped over the a lazy dog cat |
Common use cases
- Proofreading drafts: Check how you reworded a sentence without getting lost in formatting changes.
- Editing legal documents: Spot exactly which terms were replaced (e.g., "shall" vs "must").
- Comparing source texts for translation: See where the source changed and how much was added or removed.
- Academic writing and paraphrasing: Quickly verify that your paraphrase differs enough from the original.
- Code documentation: Compare two versions of a comment block to make sure you didn't accidentally remove something important.
- Blog post updates: Show readers a clear diff of an updated article (plain‑text version works great in Git commit messages).
Pro tips
- For a minimal “what changed” summary, enable “Show only changed words” – the output becomes a compact list of additions and deletions.
- If you're comparing texts that differ only in capitalization (like a headline rewrite), turn off case insensitivity to catch those differences.
- Paste long texts freely – the algorithm runs in your browser and can handle tens of thousands of words without lag.
- After comparing, you might want to clean up extra whitespace – our Whitespace Cleaner is just a click away.
- If you need a character‑level diff for more granular changes, try the Text Diff Checker or the Character Compare tool.