I'm sure I read somewhere, probably here, that a JPEG image becomes degraded after it's been opened a few times and the images should be converted to TIFF. Is this correct? and can TIFF images be transferred to a VCD and opened normally? TR
It is possible to compress (shed) some of the file each time it is saved as a jpg.
It should also be possible to have full control of how much if any compression is being permitted.
For example, Corel Photopaint in the option to Save-As can vary the compression and other important parameters from zero to quite high factors. I keep my settings at zero and don't have to worry about non-existing degradation.
Conversion to another format like TIFF, BMP, and so on depends on the software but needs only to be done for specific reasons, you do what you want and ignore hearsay.