About Text Diff Tool
The Text Diff tool by TooliFyra lets you compare two pieces of text side by side with color-coded highlights showing exactly what changed. Additions appear in green, deletions appear in red, and unchanged lines remain neutral. This makes it easy to spot differences between two versions of a document, code file, email, or any text content.
The comparison uses a line-by-line diff algorithm that efficiently identifies insertions, deletions, and modifications. Results are displayed in a clear two-column layout with statistics showing the count of added, removed, and unchanged lines. All comparison happens in your browser, ensuring your text data stays completely private.
How to Use
- Paste original text - Enter the original version of your text in the left textarea.
- Paste modified text - Enter the changed version of your text in the right textarea.
- Click Compare - The tool runs the diff algorithm and displays a side-by-side comparison with color-coded highlights.
- Review changes - Green highlights show additions, red highlights show deletions, and the stats bar summarizes all changes.
Features
Side-by-Side ViewCompare original and modified text in a clear two-column layout.
Color-Coded DifferencesAdditions highlighted in green, deletions in red for instant visual identification.
Line-by-Line DiffEfficient algorithm compares text line by line for accurate results.
Change StatisticsSee counts of added, removed, and unchanged lines at a glance.
Swap FunctionQuickly swap original and modified text for reverse comparison.
100% PrivateAll comparison happens in your browser with zero server calls.
Benefits
The Text Diff tool saves time when reviewing changes between document versions, code revisions, or content updates. Instead of reading through two complete documents to find differences, the side-by-side comparison instantly highlights every change. This is particularly valuable for code reviews, editorial workflows, and legal document comparisons.
The visual color coding makes it easy to understand the nature of changes at a glance. Green means something was added, red means something was removed, and the line-by-line alignment ensures you always know where each change occurred in the original context.
Use Cases
Code ReviewsCompare code revisions to quickly identify additions, deletions, and modifications.
Document EditingTrack changes between drafts of articles, reports, and contracts.
Content MigrationVerify content was transferred correctly by comparing original and migrated text.
Contract ComparisonIdentify differences between contract versions for legal and business review.
Why TooliFyra?
TooliFyra provides a complete suite of free developer tools designed for productivity. The Text Diff tool offers side-by-side comparison with color-coded highlights, change statistics, swap functionality, and sample data loading. No registration, no ads, no tracking - just fast, reliable text comparison whenever you need it.
FAQ
How does the diff algorithm work?
The tool uses a Longest Common Subsequence (LCS) algorithm to identify the maximum matching lines between two texts. Lines that do not match are classified as additions or deletions based on their position.
Can I compare code files?
Yes. The tool works with any text content including source code. Each line is compared independently, making it effective for code comparison across programming languages.
Is there a size limit?
There is no hard limit, but very large texts (thousands of lines) may slow down the comparison. For best performance, compare texts under 10,000 lines.
Are my texts stored anywhere?
No. All comparison happens entirely in your browser using JavaScript. Your text data is never sent to any server.
