How to use this tool
Paste the original text in the first field and the revised text in the second, then compare line by line. Copy or download the result.
Private processing
Your input is processed in this browser tab. PixelKit does not upload it to a file-processing server; leaving the page clears the current work.
Formats and limits
The result marks unchanged lines with two spaces, removals with “-” and additions with “+”. Inputs whose line-count product exceeds one million are rejected to bound memory use.
Related guides
Frequently asked questions
How are changes shown?
Unchanged lines start with two spaces, deleted lines with a minus sign, and added lines with a plus sign.
Does this compare individual characters?
No. The current tool compares complete lines and does not produce character-level highlighting.
Is my text uploaded for comparison?
No. The comparison runs in this browser tab and the text is not stored by the tool.