Editorial review
Check revised articles, product descriptions, emails, and translations before publishing.
Private browser-based text analysis
Text Compare and Difference Checker
Compare two texts locally and highlight changes by character, word, or line. Nothing is uploaded or stored.
Your drafts stay on this device
Comparison runs inside your browser. The text is not uploaded, saved, or included in analytics.
Comparison workspace
Paste or type two versions, choose how differences should be treated, then compare.
No linesNo characters
No linesNo characters
Comparison settings
Choose the level of detail and which formatting differences to overlook.
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Use this text compare tool to review two drafts, release notes, code-free content, or line-based lists. Character, word, and line modes expose different kinds of edits, while side-by-side and unified views support both close proofreading and quick review.
How to compare two texts
How to compare two texts
Paste the earlier version into Original text and the newer version into Modified text. Select a difference level, enable only the ignore rules you need, and choose Compare texts. Review the labeled changes, copy the summary, or download a plain-text diff.
How difference detection works
How difference detection works
The browser normalizes only the options you select, then uses a Myers-style diff implementation to find additions and removals. Changed line pairs also receive an intraline word comparison. Exact lines removed in one unique location and added in another are labeled as moved when that match is reliable.
Common uses for text comparison
Release-note checks
See which features, fixes, or version details changed between two software announcements.
List and data review
Compare ordered lines from inventories, exports, checklists, or configuration snippets.
Approval handoffs
Create a concise difference summary when a draft passes between teammates or clients.
A practical comparison workflow
A practical comparison workflow
Start with word mode
Word mode is usually clearest for editorial revisions because it shows wording changes without turning every edit into individual letters.
Use line mode for structured text
Choose ordered lines for release notes, lists, configuration excerpts, or any material where line position carries meaning.
Apply ignore rules deliberately
Ignore case, punctuation, or spacing only when those differences are irrelevant; results are calculated from the normalized comparison text.
Character, word, and line modes explained
Character, word, and line modes explained
| Mode | Best for | What it highlights |
|---|---|---|
| Character | Typos, identifiers, short strings | Each inserted or deleted character |
| Word | Articles, emails, product copy | Changed wording with readable context |
| Line | Lists, notes, structured text | Whole added, removed, changed, or reliably moved lines |
Private by design
Private by design
All text processing happens locally in a browser worker. Compared content never leaves the device, is not written to storage, and is never attached to analytics events. Analytics can record only non-content details such as the selected mode and a broad input-size bucket.
Limits to keep in mind
Limits to keep in mind
A text diff identifies textual changes; it does not understand author intent or judge which version is correct. Ignore options display normalized comparison output. Moved lines are labeled only for unique, exact matches. Extremely large or repetitive documents may take longer depending on the device.
Frequently Asked Questions
Is my text uploaded to ConvertPilot?
No. Comparison runs in your browser, and the two texts are neither uploaded nor stored.
Which mode should I use for proofreading?
Start with word mode for readable edits. Switch to character mode for spelling, punctuation, codes, or very short strings.
Can I ignore formatting-only changes?
Yes. You can ignore capitalization, whitespace, repeated spaces, line endings, punctuation, or trim each line before comparing.
Does the tool support Arabic and accented characters?
Yes. It works with Unicode text, including Arabic, Turkish, German, Spanish, Portuguese, Indonesian, and emoji. Arabic editors and results use right-to-left direction.
What is included in the downloaded diff?
The TXT file contains every compared line with symbols for unchanged, added, removed, changed, and reliably moved content.