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Make Filename Lowercase

by ereckers

4.8
(4 ratings)

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).

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.

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.

An image detail view from the Media Library showing the new File name as lowercase.

Plugin Details

Active Installs
1K+
Total Downloads
10,141
Version
1.0.2
Requires WP
3.0.1
Requires PHP
Tested Up To
6.8.8
Added
2011-02-11
Last Updated
2025-09-03 1:35am GMT

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