What is a Diff?

Diff takes two texts and finds the differences. This implementation works on a character by character basis. The result of any diff may contain 'chaff', irrelevant small commonalities which complicate the output. A post-diff cleanup algorithm factors out these trivial commonalities.

Instructions:

Your Excel file should include exactly 2 columns.
Your Excel file should include exactly 1 row for headers.
The headers row should be the first row.
The leftmost header column should be labeled Previous.
The rightmost header column should be labeled Current.
Drag your file into the grey box below.
Copy and paste your results.

Text Differ Options:

Semantic Cleanup: Increase human readability by factoring out commonalities which are likely to be coincidental.
Efficiency Cleanup, edit cost:: Increase computational efficiency by factoring out short commonalities which are not worth the overhead. The larger the edit cost, the more aggressive the cleanup.
No Cleanup: Raw output.

Diff timeout:

seconds
If the mapping phase of the diff computation takes longer than this, then the computation is truncated and the best solution to date is returned. While guaranteed to be correct, it may not be optimal. A timeout of '0' allows for unlimited computation.

Drag your Excel file into this box.