Text file size mismatch between local and distant FTP

[jokoon]

I use an old ftp hosted on a french free FTP server, specifically by free.fr (it's an ISP and offers ftp hosting). I have little clues how to know the FTP server version:

220 Serveur de mise a jour des pages perso de Free.fr version [Oct 30 2019 18:30:59]

I combine synchronized browsing with directory comparison.

For some reason, the file sizes, even though they are identical (I checked), are mismatched, which shows files being different when using the comparison feature. Those files are text files.

I suspect the issue might come from the FTP server sending erroneous, 1000 or 1024 rounded file sizes, or something similar.

OS is windows 10, filezilla 3.48.1.

I'm not sure if the filezilla team is very fond of this comparison feature, I'm not sure if it can be customized for my needs, but I really like this feature. The feature seems to work fine for jpg and PNG.

[jokoon]

comparison example

[Tim Kosse]

See ​https://wiki.filezilla-project.org/Data_Type