Text Compare & Diff Tool
Compare two text files or snippets line by line and see the exact word-level changes highlighted.
What is the Text Compare & Diff Tool?
Instantly find the differences between two versions of code, a document, or any text. Our Text Compare & Diff Tool lets you paste text or drop files into two panes to see a clear, color-coded comparison. It shows added and deleted lines, but goes a step further: inside changed lines, it highlights the specific words and characters that were altered. This makes reviewing code changes, contract edits, or configuration files fast and precise. It's free, and all comparisons run in your browser, so your data remains private.
How to use
- Paste your text into the "Original" and "Comparison" panes, or drag and drop text files onto them.
- Click the "Compare" button to see the differences. You can also use "Insert Example" to test the tool.
- The result shows added (green) and deleted (red) lines. A changed line appears as a deletion followed by an addition.
- If "Highlight words" is checked, specific altered words within changed lines are highlighted with a darker background.
- Use the "Ignore whitespace" or "Ignore case" options to refine the comparison; the results update automatically.
- Click "Save Result" to download the text of the comparison view as a .txt file.
Frequently asked questions
Does it highlight specific word changes?
Yes. After identifying changed lines, it runs a second comparison to pinpoint altered words (for English/code) and individual characters (for other scripts/symbols).
Is my text sent to a server? Is it secure?
No. All comparison logic runs entirely within your web browser. Your data, source code, or private documents are never uploaded, ensuring complete privacy.
What file types and sizes are supported?
You can drag and drop plain text files like .txt, .md, .json, and .csv. Both the original and comparison files can be up to 8MB each.
Why do the results sometimes show many changes?
For very large inputs (e.g., over 2000 lines each), the tool may use a simplified comparison for stability. This can show more changes than the absolute minimum.