I downloaded several images that are are .jfif files. I have various enhancements (e.g. context menus) and processing scripts that are keyed to *.jpg files and would like to use these with the new files.
I have read Are all JPEG files JFIF?, but want to explicitly clarify: is it safe (by which I mean no risk of corruption or errors reading the file, either image data or metadata) to directly rename a .jfif file as a .jpg file?
I am trying to understand whether it's fine to simply rename the files and change the extension directly (i.e. the underlying file format is the same) or whether I need to re-encode/re-save these .jfif files as .jpg files (which might result in some lossy compression / quality loss), because the two file formats are different somehow.