Gimp will save all layer information plus undo plus other stuff in its own format. Export does what you want. I don’t know Adobe products, but I could imagine Photoshop doesn’t save to jpeg as default.
Why are you using Linux and Android in the first place?
At this rate limit, end of the month.
Mastodon is (IMHO) like twitter was when it started. A SOCIAL network, where people talk to each other, respectfully. There’s no follower fishing, as there is no way to get famous. All you can get there is respect.
Fairenough.
Start to use command line tools like mutt, links and so on. Okay, maybe not links, but mutt is still the best MUA around.
And whenever you are asked to get some data out of an excel sheet, export it to csv and use sed, awk, grep, wc, cut, uniq, sort, head, tail and stuff.
No, stuff is not a command afaik 😁
Oh, by the way, you can open tar.gz on Android. No problem.