Instead of this plugin I manually changed the titles of my media (relatively quick, if you start from the thumbnails list, click on the first item and go from one to another with the arrows)
Then I used Media File Renamer (https://wordpress.org/plugins/media-file-renamer/) which change your file name based on the title. It also update the links between your library and posts.
Had difficulties with another file renaming plug in (days of backwards and forwards emailing... and it cost money!) that would not allow me to individually rename files but this one was not only free but worked instantly!!
I wanted a facility to rename titles and filenames (GUIDs) by filtering through Media Library. I use a plugin called Media Search to search by which page the image is attached.
This plugin by default renames your titles to make them 'look nice' (ie remove underscores and spaces), but if you wanted to have the titles unaltered you can simply change one of the lines in the php file. See Support post 'Unable to rename exactly the way I want it'.
Also, you can change the underlying filenames by referring to the post, 'GUID not updated'. But strongly suggest that your original image filenames are unique throughout your website.
I tend to use Total Commander to rename files before uploading.
I don't know why I havent look for this earlier. it is so handy!
After several other plugins tested... this one worked as aspected!
Bulk rename made it much faster than doing 1 image at a time.
This is going to save me 100s of hours of work for clients. Thank you, thank you, thank you. (=
The title says it.
Changes the filenames of thumbnail versions automatically. I love that.
very useful and efficient.
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