Free Text Diff Checker Online
Compare two texts side by side and highlight differences. Perfect for checking edits and revisions. 100% client-side — your text stays private.
How to Use the Text Diff Checker
- Paste original text in the left input area.
- Paste modified text in the right input area.
- Click "Compare" to see the differences.
- Choose a view: Side by Side, Inline, or Unified.
- Toggle options: Character-level, Word-level, Ignore whitespace, Ignore blank lines.
- View the statistics showing added, removed, changed, and unchanged lines.
- Click "Copy Diff" to copy the diff to your clipboard.
Why Use This Text Diff Checker
Whether you're reviewing code changes, comparing document versions, or checking edits, a diff tool is essential. This tool provides multiple view modes and granularity options for detailed comparison.
The character-level and word-level diff options make it easy to spot even small changes. The color-coded additions and deletions provide clear visual feedback.
Frequently Asked Questions
Character-level diff highlights individual character changes. Word-level diff highlights entire words that changed. Character-level is more precise, while word-level is easier to read.
When enabled, spaces, tabs, and other whitespace characters are ignored during comparison. This is useful for comparing code where indentation differs but logic is the same.
Unified diff shows all changes in a single view, with lines prefixed by + (added), - (removed), or (unchanged). This is the standard format used by version control systems like Git.
Yes! The "Copy Diff" button copies the current diff view to your clipboard, which you can then paste into emails, documents, or version control systems.
Use Cases
Code Snippet Comparison
Comparing code snippets line by line helps developers identify bugs and track changes across code revisions.
Document Revision Tracking
Checking document revisions with a diff tool makes it easy to see exactly what was added, removed, or modified.
Version Change Identification
Identifying changes between versions ensures nothing is missed when reviewing updates to files or documents.
Config File Modifications
Reviewing config file modifications helps sysadmins track infrastructure changes and troubleshoot issues.
Visual Text Differences
Visualizing text differences with color-coded highlights makes it simple to understand changes at a glance.