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 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 ?
The issue you described can occur due to repeated cycles of editing and saving jpeg images and closing the editor in between.
If i’m editing an image with an editor and I keep saving periodically as jpeg, while the editor remains with the file open, it still has the original before-degradation image so even if i save 10 times as jpeg, the final result is being compressed only once.
However, if I save, close the editor the and then reopen the same file again for more editing, the software has to work with the “photocopy” I saved before, and is this cycle is what could degrade the image.
When you work with image editing, you save your work in a lossless format and only export it as jpeg the final copies that you won’t be editing.
Same goes for mp3 files.
But remember, you can open those files anytime to watch/hear them without any degradation.