
Certain image files I use in a genealogy program somehow lost the dot before the extension, for instance, image_example.jpg became image_examplejpg. However, there’s something I need to do that I can’t figure out how, though, with Finder’s Find/Replace or Rename functions, Automator, Easyfind, or BetterFinderRename. It’s nice to know this feature is built into Sierra. The extension you are choosing does not matter, though you’ll obviously want to pick one that is compatible and accurately represents the file type otherwise it may make it unreadable to some applications. In the example above we changed a group of image files from having a “.jpeg” file extension to having a “.PNG” file extension, but you can use this with any file extension, whether it’s changing a group of files from having.

It’s a subtle difference but important if all you want to do is maintain file names but change the file extensions.
OSX RENAME FILES BATCH 2017 MAC
We’re going to use the same rename feature that allows batch renaming of files on the Mac but with a few slight modifications to the usage and related system preferences so that it focuses on changing the file extension rather than the file name. This is also not changing the file names, it is only changing the extension that comes as a file suffix.

We have plenty of articles about various file format and type conversions if you’re interested in that, however.

Remember this is only changing the file extension, this is not actually changing the file type or performing any file conversion.
