Title: Problem with enforcing lowercase
Last modified: March 30, 2023

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# Problem with enforcing lowercase

 *  [norbou](https://wordpress.org/support/users/norbou/)
 * (@norbou)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/problem-with-enforcing-lowercase/)
 * Hi guys,
 * I have noticed a problem with generation of PDF thumbnails. It seems to be caused
   by plugin Clean Filenames because thubnails are generated with forced lowercase
   name but original files is not lowercase. I think that lowercase should be enforced
   only when uploading files, but the same is valid for all file naming operations.
   What if I am generating the thumbnail of the file which was not sanitized before?
   It can be, but the file name link in database should be corrected in the same
   way. This behavior caused my problem with generating some PDF thumbnails using
   standard WordPress function and ImageMagick PHP module. After deactivation of
   the plugin was the problem solved. Check this out, please and thank you very 
   much.
 * Jiri
    -  This topic was modified 3 years, 2 months ago by [norbou](https://wordpress.org/support/users/norbou/).

Viewing 1 replies (of 1 total)

 *  Plugin Author [Samuel Aguilera](https://wordpress.org/support/users/samuelaguilera/)
 * (@samuelaguilera)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/problem-with-enforcing-lowercase/#post-16612376)
 * Please provide more details about how you are generating those thumbnails for
   PDF files (e.g. which plugin or code snippet you’re using for it) and step by
   step instructions on how to replicate the issue.

Viewing 1 replies (of 1 total)

The topic ‘Problem with enforcing lowercase’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/sanitize-spanish-filenames.svg)
 * [Clean Filenames](https://wordpress.org/plugins/sanitize-spanish-filenames/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/sanitize-spanish-filenames/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/sanitize-spanish-filenames/)
 * [Active Topics](https://wordpress.org/support/plugin/sanitize-spanish-filenames/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/sanitize-spanish-filenames/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/sanitize-spanish-filenames/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Samuel Aguilera](https://wordpress.org/support/users/samuelaguilera/)
 * Last activity: [3 years, 2 months ago](https://wordpress.org/support/topic/problem-with-enforcing-lowercase/#post-16612376)
 * Status: not resolved