Can I compare more than two texts at once?

No, this tool compares two texts at a time. To compare multiple versions, compare them pairwise (version 1 vs version 2, then version 2 vs version 3, etc.). For comparing multiple files simultaneously, use desktop diff tools or version control systems like Git.

Will the tool ignore whitespace or formatting differences?

No, the tool highlights all differences including whitespace, line breaks, and formatting. If you want to ignore formatting differences, normalize both texts first (remove extra spaces, standardize line breaks) before comparing. The tool is designed to show all changes, including formatting.

What's the maximum text length I can compare?

There's no hard limit, but very long texts (over 100,000 characters) may process slowly. For best performance, compare texts under 50,000 characters each. For extremely long texts, split them into smaller sections and compare separately, or use desktop diff tools.

Can I export or save the diff results?

Currently, the tool displays diff results in the browser. You can copy the text from either field or use browser tools to save the page. For exporting diff results in standard formats (unified diff, context diff), use desktop diff tools or version control systems.

How accurate is the diff comparison?

The tool provides accurate character-by-character and line-by-line comparison. It highlights all differences including additions, deletions, and modifications. The comparison is real-time and updates as you type or paste text. For very complex texts with many changes, review the statistics to understand the scope of differences.

Text Diff Checker - Compare Texts Free

When to Use This Tool

Use this when:

You need to compare two versions of a document to see what changed between drafts or revisions
You want to review edits made to text and see exactly what was added, removed, or modified
You're comparing code files or configuration files to track modifications and changes
You need to identify differences between legal documents or contracts in different versions
You want to compare translated text with the original to verify translation accuracy
You're reviewing changes in collaborative documents and need to see what was modified
You need to track changes in text files, logs, or data exports between versions

Don't use this if:

You need to compare very large texts (over 100,000 characters may process slowly)
You want to compare binary files or non-text content (this tool only works with text)
You require advanced diff features like merge conflict resolution (use specialized version control tools)
You need to compare more than two texts simultaneously (this tool compares two texts at a time)
You want to ignore whitespace or formatting differences (this tool highlights all differences including formatting)

What is a Text Diff Checker?

A text diff checker compares two pieces of text side by side and highlights the exact differences — additions, deletions, and modifications. Our tool runs entirely in your browser, ensuring your content stays private.

Text comparison is essential for code reviews (finding what changed between versions), content editing (seeing what an editor modified), legal document review (identifying changes between contract versions), and quality assurance (verifying that templates were correctly customized).

This tool is invaluable for software developers reviewing code changes without Git access, editors comparing draft versions of articles, legal professionals verifying contract revisions, translators comparing source and target texts, and students checking their work against reference materials.

Compared to dedicated diff tools like WinMerge or Beyond Compare (which require installation) or online diff checkers that may store your content, PureXio's diff tool provides instant, private comparison in your browser. It uses a standard diff algorithm to produce accurate, line-by-line comparison with color-coded highlights.

The tool supports both unified and side-by-side diff views, handles large text blocks efficiently, and clearly marks each type of change with distinct colors — green for additions, red for deletions, and yellow for modifications. You can copy the diff output or review changes inline.

Best for: comparing two texts to find differences. Color-coded additions, deletions, and changes. Side-by-side or unified view. Fully private.

How to Compare Texts

Paste original text in the first field (left side) and modified text in the second field (right side). Both texts are compared side-by-side

Tool highlights differences automatically: added text (green), removed text (red), unchanged text (gray). Statistics show counts of additions, deletions, and unchanged lines

Review differences highlighted in real-time. Copy diff results or use the comparison to identify all changes between the two texts

Common Use Cases

Compare document versions to identify changes between drafts or revisions

Find differences between code files or configuration files to track modifications

Compare text before and after editing to review changes made

Identify changes in legal documents or contracts between versions

Compare translated text with original to verify translation accuracy

Review edits in collaborative documents to see what team members changed

Track changes in text files, logs, or data exports between different versions

Features

Side-by-side text comparison with real-time diff highlighting

Visual highlighting: added text (green), removed text (red), unchanged text (gray)

Line-by-line comparison shows exactly what changed between texts

Statistics display: counts of additions, deletions, and unchanged lines

Real-time comparison—differences update as you type or paste text

Works with any text length (small phrases to long documents)

100% private—all processing happens in your browser

Limitations & Constraints

Very long texts (>100,000 characters) may process slowly—consider splitting into smaller sections

Whitespace differences are highlighted—may show many differences for formatting-only changes

Line-by-line comparison may miss changes within the same line if lines are identical

Special characters or encoding differences may affect comparison accuracy

Large text differences may be difficult to review—use browser search to find specific differences

Troubleshooting

Diff shows too many differences or highlights everything

Solution: Whitespace and formatting changes create many differences. If you only care about content changes, normalize formatting first (remove extra spaces, standardize line breaks). The tool highlights all differences including whitespace. For content-only comparison, preprocess both texts to normalize formatting. Prevention: Normalize text formatting before comparing if you want to ignore formatting differences.

Differences not highlighted correctly or missing changes

Solution: Ensure both texts are properly pasted—check for hidden characters or encoding issues. Try copying texts again from source. If differences aren't showing, verify both text fields have content. The tool compares character-by-character, so exact matches are required. Prevention: Copy texts directly from source, avoid intermediate formatting that might add hidden characters.

Comparison is slow or browser becomes unresponsive

Solution: Very long texts (>50,000 characters) process slowly. Split texts into smaller sections and compare separately, or wait for processing to complete. Close other browser tabs to free up resources. For extremely long texts, use desktop diff tools. Prevention: Compare texts in smaller sections if they're very long.

Can't see all differences or need to find specific changes

Solution: Large differences may require scrolling. Use browser search (Ctrl+F) to find specific text in either field. The statistics show counts of additions and deletions—use these to understand the scope of changes. For very large diffs, compare sections separately. Prevention: Compare texts in logical sections for easier review.

Need word-level or character-level diff details

Solution: This tool provides line-by-line comparison. For word-level or character-level differences, the highlighting shows changes within lines. If you need more granular diff details, use specialized diff tools or text editors with advanced diff features. The tool is designed for quick visual comparison of text changes. Prevention: Understand that this tool focuses on line-level comparison—for detailed character-level diffs, use specialized tools.