Make Filename Lowercase

Description

Sets uploaded media filename to lowercase as filter on sanitize_file_name. Based on post at Stack Overflow asking if there is a way to “Rename files during upload within WordPress 3.0 backend”.

Created for WordPress 3.0.1+ which saves any uploaded media filename (Image, Video, Audio) as lowercase. This effectively changes the name of the file at upload if a user were to upload a file with any uppercase characters.

For instance:

  • MOVIE-FILE.MOV > movie-file.mov
  • Movie-File.wmv > movie-file.wmv
  • ImAgEfILe.gif > imagefile.gif
  • imageFile.JPG > imagefile.jpg
  • ETC > etc

Note: WordPress sets file extension to lowercase. This plugin does a strtolower on the filename.

More Information

Visit the Red Bridge Internet site for more information about Make Filename Lowercase plugin.

Screenshots

  • Upload media filename of mixed case (in this case, the file MIXED-cAsE-filename.JPG).
  • Filename changed to lowercase (mixed-case-filename.jpg) preserving the case for Title.
  • An image detail view from the Media Library showing the new File name as lowercase.

Installation

  1. Download the plugin and unzip it.
  2. Upload the folder /make-filename-lowercase to your /wp-content/plugins/ folder.
  3. Activate the plugin from your WordPress admin panel.
  4. Installation finished.

FAQ

Why was this plugin created?

This plugin evolved from a client requirement that all uploaded media filenames contain no uppercase characters.

Why did you release this plugin?

It was useful to me and I wanted to work through the process of releasing a WordPress plugin.

Why shouldn’t this just be added to a theme’s functions.php file?

Upgradeability, portability, backwards compatibility, and other *abilities. If for some reason this function were in need of customization due to a WordPress version upgrade, the plugin will be centrally responsible for releasing the fix as opposed to updating the theme(s).

Contributors & Developers

“Make Filename Lowercase” is open source software. The following people have contributed to this plugin.

Contributors

Changelog

1.0.2

  • moved plugin screenshots to assets directory
  • added cool header banner for plugin repository

1.0.1

  • Tested for 3.3.1

1.0.0

  • Initial release