ricker

but I don't know much about how efficient the file system is. speaking of filesystem, after upgrading to Mojave, my fs is now APFS. and a little googling i found this: https://forums.developer.apple.com/thread/103162 which says using FSGetCatalogInfo, which is now deprecated, might not work properly with APFS

And they both have the same notes? files are identical bytewise (e.g. cp in.pdf out.pdf) And does Finder's info window report the same sizes? yes, all apple tools show 4.6 MB for both files. ,ls -lh and Firefox pdf viewer show 4.4MB. That might be a Mebibyte vs Megabyte thing though. (Edit: this is confirmed: 4.4 * 1.049 = 4.6) Nonetheless, every tool shows the file size the same for both files. I don't know what sizes Preview reports. Preview reports the same size as Finder (4.6 MB) But I still...

And they both have the same notes? files are identical bytewise (e.g. cp in.pdf out.pdf) And does Finder's info window report the same sizes? yes, all apple tools show 4.6 MB for both files. ,ls -lh and Firefox pdf viewer show 4.4MB. That might be a Mebibyte vs Megabyte thing though. Nonetheless, every tool shows the file size the same for both files. I don't know what sizes Preview reports. Preview reports the same size as Finder (4.6 MB) But I still don't see what is necessarily a bug. If the sizes...

And they both have the same notes? files are identical bytewise (cp in.pdf out.pdf) And does Finder's info window report the same sizes? yes, all apple tools show 4.6 MB for both files. ,ls -lh and Firefox pdf viewer show 4.4MB. That might be a Mebibyte vs Megabyte thing though. Nonetheless, every tool shows the file size the same for both files. I don't know what sizes Preview reports. Preview reports the same size as Finder (4.6 MB) But I still don't see what is necessarily a bug. If the sizes...

The files are on the same disk/volume, just different subdirectories. The size is consistenly identical when opening both files in Preview.

identical in size and in byte-by-byte comparison. reproducible by just cp in.pdf /some/other/dir/out.pdf. edit: the attached images show a size difference of 0.6 MB though the byte count is identical. i have seen cases where the difference is around 10 MB (on a 100MB file).

identical in size and in byte-by-byte comparison. reproducible by just cp in.pdf /some/other/dir/out.pdf.

File size in MB is inconsistent when viewing identical copies of pdf in different directories