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 ?
As many others have said, only resaving the image with another jpg compression will degrade quality. What are you using to view the images with? Also, your workflow for looking at.those images/encrypting them sounds rather convoluted. May I ask why you do it that way? Is encryption important to you or is it something else? The constant zipping and unzipping sounds unsafe (so much copying, archives can corrupt) and insanely time-consuming.
Just renaming them to PNG will change nothing at best and make your viewer unable to open the images at worst.
I do it that way because i am afraid of losing my msd or someone stealing it and having full acess to its data . Do you have a better way to suggest ?
Where do you store those files? I’m not familiar with the abbreviation msd