I was thinking of renaming every images extension to PNG but as my lap is crapped out and i am broke as hell i would have to do it on phone is there any good app on fdroid that can do it in a bulk ? Also does renaming the end from “jpg” to “png” actually change the format ? This pictures are very important to me as they have an imotionall connection to me.
On a less important note is this the same for mp3’s too as i save my favourite songs in the same way as a zip file is m4a better ?
Changing file extension does nothing. You would need to reencode the files in order to change what encoding (jpg or png) they use. BUT good news is JPGs only lose quality when they’re encoded. Moving the files around or zipping them up won’t change the contents of the file, so they won’t lose quality. Unless you’re opening them in an image editor or something like that and re-saving them, you’re good. Same goes for compressed audio.
Oh thanks i was really worried there for a sec . Also read the edit and see if that changes anything .
None of it matters.
JPEGs “lose quality” when people are editing them. If you take a JPEG and add text over it for a meme, the image gets worse. If someone opens your edited version and writes new text over that, the image gets worse. Etc. Plus websites that host images sometimes automatically compress them more, losing more.
All the other stuff you’re talking about doesn’t care about the format. Compression, encryption, etc, are all based on the assumption that the files have to be exactly the same. They use methods that don’t lose anything.