Free text tool

Free Online Text Comparison Tool

Paste two versions of a text to see exactly what changed. Additions, deletions and reworded passages are highlighted side by side, so you can review drafts, contracts and other revisions quickly.

Original Text

The must submit the report within days. The review meeting is scheduled for at 10:. Please send a copy to the project manager. Final approval requires notice.

Changed Text

The must submit the report within days. The review meeting is scheduled for at 10:. Please send a copy to the project manager. Final approval requires notice.

Comparison options Ignore capitalization Ignore whitespace

Use PDFs instead →

Privacy friendlyYour text stays in your browserComparison happens locally. Your text is not uploaded or stored.

Comparison Result

7 differences1 additions1 removals5 changes0 movedOriginal: 32 words · Changed: 32 words

Changes Only

View all differences

Quick answer

What does an online text comparator do?

An online text comparator finds wording differences between two pasted versions. KnowledgePilot highlights added, removed, and changed text in complete side-by-side readers. You can click each yellow highlight to review the matching change; the comparison runs in your browser.

Best forDraft revisionsWording changesPunctuation checks

KnowledgePilot text comparison tool with original and revised text, highlighted additions and deletions.

At a glance

One small edit, easy to spot

OriginalThe contractor must submit the report within 14 days.

ChangedThe consultant must submit the report within 14 days.

Use an online diff checker to review a draft

A text diff shows where two versions disagree. Paste your original and revised wording to compare texts without reading each version from start to finish. The side-by-side view keeps matching passages nearby while you inspect additions, deletions and replacements.

Code compare for pasted snippets

Use code comparison to review changes in plain-text snippets, configuration or markup. A code diff can reveal a changed value, missing line or punctuation edit. This is a text comparison, not a parser or debugger: it does not run code, validate syntax or tell you whether a change is correct.

File comparison starts with the text

For a file diff, copy the plain text from each version into the two fields. This page compares pasted content rather than uploading arbitrary files. If you need PDF compare, follow the PDF Difference Checker link to compare selectable wording in the source pages. Images, fonts and page layout need a separate visual review.

Read both versions side by side

Paste an original version on the left and an edited version on the right. The comparison keeps both complete texts visible, so you can read the changes in context instead of scanning isolated snippets.

Review additions and deletions

Yellow marks show wording that was added, removed, or replaced. Select any mark to find its counterpart in the other document, or move through the differences one at a time.

How to review a revision

Copy the two versions into the fields above and select Compare Text. Use the arrows or the difference index to review every edit. Swap reverses the versions; Clear starts a new comparison.

Check words, punctuation and spacing

The tool checks words, punctuation, capitalization, and whitespace in the pasted text. It does not inspect fonts, colors, images, or page layout.

Track moved paragraphs

The diff tool identifies unique, unchanged paragraphs that moved instead of counting them as added and deleted. It also overlooks insignificant spacing and line wrapping differences while keeping both original texts visible.

Good to know

Frequently asked questions

What is the difference between a text diff and a similarity check?

A text diff identifies specific edits between versions. It does not provide a plagiarism score, judge whether two arguments mean the same thing or find matching content elsewhere on the web. Use the unchanged passages and highlighted edits to assess the wording yourself.

Can I use this online diff utility without installing software?

Yes. Open the page, paste both versions and run the comparison in your browser. You do not need a desktop diff application or an account.

Can I compare sentences or individual words?

Yes. Paste two pieces of text to compare words, punctuation or a rewritten sentence. Review the highlighted differences alongside the surrounding wording so a small edit does not lose its context.

Can I use this for paragraph comparison?

Yes. Paste the original and revised paragraphs into the two readers. The diff checker highlights wording changes and can identify unique, unchanged paragraphs that moved.

Can I compare text files or source code?

Copy plain text from each file into the fields and click the comparison button. This tool reviews text, not file formatting or code behavior. For PDF documents, use the separate PDF Difference Checker.

Is my text uploaded?

No. Comparison runs in your browser and your text is not uploaded or stored.

Can I compare long passages?

Yes. Paste the full text from both versions to see each document side by side.

Can Text Compare detect moved paragraphs?

Yes. Unique, unchanged paragraphs can be marked as moved. Ambiguous repeats and very short headings use the ordinary text difference instead.

Keep exploringNeed to compare PDF files? Try PDF Difference Checker.

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