Text Diff Checker
Compare two texts line by line, preserve whitespace, review added and removed lines, then swap or download the diff.
Compare two texts line by line, preserve whitespace, review added and removed lines, then swap or download the diff.
- Prepare your input
Choose the relevant options using the controls below.
- Run your task
Adjust the controls below and inspect the preview.
- Use the result
Check the result, then use the available copy or download controls.
Text Diff Checker
Compare two text versions using an exact line-based comparison. Added, removed and unchanged lines remain visible, including their whitespace and line terminators, so the result is useful for configuration files, notes and generated output. Swap the inputs to reverse the review, clear them, or download the marked text as a plain text file.
The comparison accepts up to 2,000,000 combined characters and stops when the line-pair matrix would exceed 2,000,000 cells. It is a line diff rather than a word-level or semantic merge, so inspect the surrounding lines before applying changes.
Features
- Compare two versions line by line with added, removed and unchanged states.
- Preserve whitespace and line terminators in the comparison result.
- Swap or clear inputs and download the marked plain-text diff.
- Reject comparisons that exceed the 2,000,000-character or line-matrix limit.
How to use
- Paste the earlier version into the first text area and the newer version into the second.
- Run the comparison and inspect added, removed and unchanged lines.
- Swap the inputs when you need the opposite direction, or clear them for a new review.
- Download the marked text if you need to attach or archive the result.