Bulk rename file to lowercase

Thanks for your question. There is no built-in MLA feature for this task, but you can use the “MLA Custom Field and IPTC/EXIF Mapping Actions and Filters (Hooks)” to do it if you are willing to write a bit of PHP code. You can find more information and some examples in the Settings/Media Library Assistant Documentation tab.

You can also get some ideas from this earlier support topic:

Taxonomy term mapping only if term already exists

It is not clear from your post whether the “file names” you want to change are the WordPress Title field or the actual file name, e.g., image.jpg, in the file system. Changing the Title field is quite safe, but changing the actual name in the file system can be dangerous. If your server’s operating system is case-sensitive with respect to file names, “image.jpg” and “IMAGE.jpg” are not the same. If you change names to all lowercase, existing references to the files will no longer work. Make sure you know if this applies to your server.

I will leave this topic unresolved for now. Please let me know if these suggestions help and if you need more specific guidance on how to proceed.

Thanks for your interest in the plugin.

I hope you were able to use the “MLA Custom Field and IPTC/EXIF Mapping Actions and Filters (Hooks)” to accomplish your file name clean up task. There are two more recent examples of similar tasks in these support topics:

Export metadata

Quick question on replacing string(s) in image metadata

Since I have not heard anything further from you I assume you have found some way to accomplish your task. I am marking this topic resolved, but please update it if you need more help. Thanks for your interest in the plugin.