Thanks!īeta Was this translation helpful? Give feedback. If this is demonstrated to be the case, please post details so the potential issue can be further investigated and rectified. If, after comparing apples to apples, WinMerge is slower than FreeFileSync, then (and only then) would it confirm that comparison speed improvements to WinMerge could be made. To rectify this, you can modify the compare method within WinMerge's Options > Compare > Folder UI. If FreeFileSync is not performing byte-by-byte comparisons, and WinMerge is configured to do this, then WinMerge will artificially appear to be slower.

It will be helpful to learn the answer to that detail. I also don't recall, if FreeFileSync finds a different timestamp for a file, if it then performs a byte-by-byte comparison of the file's contents. In my case Each of 2 files nearly contains 3000 lines And there are some lines ONLY contain changes.

You might want to verify that, because I'm going by memory. When I compare 2 large files I used winmerge It is a great tool that can find the delta between 2 files. Does FreeFileSync perform a byte-by-byte comparison of the content of each file? IIRC, it compares the size and timestamps, but not the content.

Winmerge compare folders slow