Title: Make Filename Lowercase
Author: ereckers
Published: <strong>11. Februar 2011</strong>
Last modified: 3. September 2025

---

Plugins suchen

![](https://ps.w.org/make-filename-lowercase/assets/banner-772x250.jpg?rev=1113558)

![](https://s.w.org/plugins/geopattern-icon/make-filename-lowercase_836e5f.svg)

# Make Filename Lowercase

 Von [ereckers](https://profiles.wordpress.org/ereckers/)

[Herunterladen](https://downloads.wordpress.org/plugin/make-filename-lowercase.1.0.2.zip)

 * [Details](https://de.wordpress.org/plugins/make-filename-lowercase/#description)
 * [Rezensionen](https://de.wordpress.org/plugins/make-filename-lowercase/#reviews)
 *  [Installation](https://de.wordpress.org/plugins/make-filename-lowercase/#installation)
 * [Entwicklung](https://de.wordpress.org/plugins/make-filename-lowercase/#developers)

 [Support](https://wordpress.org/support/plugin/make-filename-lowercase/)

## Beschreibung

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._

#### Weitere Informationen

Visit the [Red Bridge Internet](http://www.redbridgenet.com/) site for more information
about [Make Filename Lowercase](http://www.redbridgenet.com/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

### Warum wurde dieses Plugin entwickelt?

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).

## Rezensionen

Für dieses Plugin gibt es keine Rezensionen.

## Mitwirkende und Entwickler

„Make Filename Lowercase“ ist Open-Source-Software. Folgende Menschen haben an diesem
Plugin mitgewirkt:

Mitwirkende

 *   [ ereckers ](https://profiles.wordpress.org/ereckers/)

[Übersetze „Make Filename Lowercase“ in deine Sprache.](https://translate.wordpress.org/projects/wp-plugins/make-filename-lowercase)

### Interessiert an der Entwicklung?

[Durchstöbere den Code](https://plugins.trac.wordpress.org/browser/make-filename-lowercase/),
sieh dir das [SVN-Repository](https://plugins.svn.wordpress.org/make-filename-lowercase/)
an oder abonniere das [Entwicklungsprotokoll](https://plugins.trac.wordpress.org/log/make-filename-lowercase/)
per [RSS](https://plugins.trac.wordpress.org/log/make-filename-lowercase/?limit=100&mode=stop_on_copy&format=rss).

## Änderungsprotokoll

#### 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

 * Erstveröffentlichung

## Meta

 *  Version **1.0.2**
 *  Zuletzt aktualisiert **vor 9 Monaten**
 *  Aktive Installationen **1.000+**
 *  WordPress-Version ** 3.0.1 oder höher **
 *  Getestet bis **6.8.5**
 *  Sprache
 * [English (US)](https://wordpress.org/plugins/make-filename-lowercase/)
 * Schlagwörter
 * [filename](https://de.wordpress.org/plugins/tags/filename/)[lowercase](https://de.wordpress.org/plugins/tags/lowercase/)
   [media](https://de.wordpress.org/plugins/tags/media/)[strtolower](https://de.wordpress.org/plugins/tags/strtolower/)
   [upload](https://de.wordpress.org/plugins/tags/upload/)
 *  [Erweiterte Ansicht](https://de.wordpress.org/plugins/make-filename-lowercase/advanced/)

## Bewertungen

 4.8 von 5 Sternen.

 *  [  3 5-Sterne-Rezensionen     ](https://wordpress.org/support/plugin/make-filename-lowercase/reviews/?filter=5)
 *  [  1 4-Sterne-Rezension     ](https://wordpress.org/support/plugin/make-filename-lowercase/reviews/?filter=4)
 *  [  0 3-Sterne-Rezensionen     ](https://wordpress.org/support/plugin/make-filename-lowercase/reviews/?filter=3)
 *  [  0 2-Sterne-Rezensionen     ](https://wordpress.org/support/plugin/make-filename-lowercase/reviews/?filter=2)
 *  [  0 1-Sterne-Rezensionen     ](https://wordpress.org/support/plugin/make-filename-lowercase/reviews/?filter=1)

[Your review](https://wordpress.org/support/plugin/make-filename-lowercase/reviews/#new-post)

[Alle Rezensionen anzeigen](https://wordpress.org/support/plugin/make-filename-lowercase/reviews/)

## Mitwirkende

 *   [ ereckers ](https://profiles.wordpress.org/ereckers/)

## Support

Möchtest du etwas mitteilen? Brauchst du Unterstützung?

 [Support-Forum anzeigen](https://wordpress.org/support/plugin/make-filename-lowercase/)

## Spenden

Möchtest du die Weiterentwicklung dieses Plugins unterstützen?

 [ Für dieses Plugin spenden ](http://www.redbridgenet.com/make-payment/)