Text Differ is a browser-based text comparison tool that displays the differences between two versions of a document side by side, highlighting additions, removals, and edits so they can be spotted without manual review.
What is Text Differ?
Text Differ is an online diff tool that takes two pieces of text as input — an original version in the left editor and a modified version in the right editor — and produces a color-coded comparison highlighting what changed. It runs in the browser, requires no installation, and supports comparison at the character, word, line, or sentence level. The tool is published at text-differ.com.
Key Features
- Side-by-side diff view — original text is pasted into the left editor and the modified version into the right, with changes highlighted in color.
- Multiple comparison modes — compare text by characters, words, lines, or sentences.
- Ignore Whitespace — exclude whitespace-only changes from the comparison results.
- Ignore Case — treat uppercase and lowercase text as equivalent during comparison.
- Auto-diff on paste — automatically run the comparison when text is pasted into an editor.
- Saved Preferences — apply and save comparison settings between sessions.
- Local History — retrieve and restore past text comparisons from browser history.
- Three-way merge — compare an original text with two modified versions to identify changes and conflicts.
- Keyboard shortcut — run the comparison with Ctrl+Enter, and resolve conflicts from the interface.
Who is it for?
- Developers — review changes in source code and configuration files between versions during development and debugging.
- Writers and editors — verify that requested corrections were made and that no unneeded changes were introduced during proofreading.
- Documentation teams — check what changed between published versions of documentation before releasing updates.
- Students and researchers — compare drafts and revisions of written work.
- Content teams — check edits made to articles, descriptions, and other text-based content.
- Project teams — confirm that all requested changes were applied to a document.
What can you do with Text Differ?
- Document review: paste an original and an edited document to see exactly which sentences, paragraphs, or words were changed.
- Code review: compare two versions of source code to identify modifications, additions, or removed parts.
- Proofreading: confirm that all requested edits were applied and no unintended changes were made.
- Configuration checks: compare configuration files to find changes that may affect an application or environment.
- Three-way merge: combine edits from multiple contributors and identify conflicts before creating a final version.
How does Text Differ work?
- Paste the original text into the left editor.
- Paste the modified version into the right editor.
- Select the comparison mode (characters, words, lines, or sentences).
- Run the comparison to view the colored differences.
- Review the results to verify whether the changes were correct.
