Best way to backup phone pictures...

Software
1

I have quite a lot of phone pictures on my hd. many of them are jpg+dng, and they are from various android phones.

Dng often are really big, and uncompressed at all. is there a way to lossless compressing them without losing anything?

I have tried to bzip2 ten raws.

Uncompressed: 240 mb
Compressed: 121 mb

I wonder if there is some good program instead of using bz2 or similar (maybe 7zip could be even better)?

Edit: i mean something like a dng compressor or so

Point 2…
My xiaomi creates raw inside a raw folder. that’s fine… except often the raw has a different file name compared to jpeg…

IMG_20230315_001530_1.dng
IMG_20230315_001530_2.jpg

is there a way to unify the name? this way for example geeqie would group jpg+dng.

thank you!

2

I use an app called Photosync, which backs up to my NAS, and renames based on the EXIF timestamp.

2 Likes
3

Just a note to people who use iPhones: iCloud backup is not really a backup. If you delete an image from your phone, it deletes the iCloud copy, too. So, you cannot use iCloud backup to save storage on your phone while keeping all of your images in the so-called backup.

If anyone knows a way around this, I’d be happy to hear it. Apple even seems to imply that you can have your backups and free up your phone storage, but it doesn’t work that way for me.

2 Likes
4

Thank you, but i would prefer open source. Maybe exiftool alone could “pair” the pictures. As for compression, i have seen dnglab, but i have yet to try it. But being in alpha state, maybe a script to compress every dng could be safer.