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Forum Discussion
does Dropbox compressed photo files???
I'm sending full resolution photo files to clients instead of burning them on a disc, but I want to make sure they are the full resolution. I had a client that had pictures made at Walgreens, and the...
I uploaded a 107.5MB TIFF file to Dropbox using a desktop browser, then downloaded the file. I then compared the file in my download folder to the source file.
Both were exact matches down to the byte: 107,525,5436 bytes.
I then checked for JPG. Also an exact match 9,177,764 bytes.
Then I checked CR2 files (Cannon's proprietary file extension)
Drumroll...both files were 23,921,835 bytes.
If you are using some mobile app to upload your photos...switch to desktop if you care about such things, but blame the right party.
Last I checked, I do not work for Dropbox, nor do I own any stock. If you call someone a liar, you better be able to back it up at least as well as dropbox backs up your files.
@Ira I don't know how I could make it any more clear from my example above that the photo was unchanged. The byte size is EXACTLY the same as is the RESOLUTION of the picture.
As with your mention of md5 checksums - yes the checksum will be different because dropbox adds one extra EXIF in the file, which will alter the md5 checksum. They also apply the Lepton compression while storing jpgs on their server. They just decompress them back when you grab them.
This is the same as you placing all your jpgs into a compressed zip/rar file and then decompressing them when you need them. It's the SAME EXACT photos. I don't see what the problem is here.
