Still BE Image Quality Control


You can individually set the compression quality of the resized image that is automatically generated when you upload the image to the WP media library.

Setting the optimum compression quality level helps ensure image quality and speed up page display.
The quality level can be examined while checking in real time.

This plugin will automatically generate the same quality and more compressed WebP if your server supports WebP.
And if user’s browser supports WebP, deliver automatically WebP instead of JPEG or PNG. (No need to rewrite the URL of the tag)

  • Set the quality level in the image type (JPEG / PNG / WebP) and size name table.
  • Set the default quality level if not set.
  • Set the quality level for WebP compression of the original image.

The following can be set as options.

  • Guarantee a Secure Filename (Deny a multibyte filename)
  • Autoset Alt from Exif (only JPEG)
  • Add a Quality Level Suffix
  • Enable Interlace/Progressive
  • Enable Generating WebP

Other functions

In addition, it has the following functions.

  • Test Quality Level
  • Reset Settings
  • Run Re-Compression

How to use

After installing and activated, WebP auto-generation and small image compression will be high.
Adjust the settings if necessary and recompress all images.

  1. Install
  2. Activate
  3. Change Settings (if you need)
  4. Recompress uploaded images (if you need)

Be sure to make a backup before recompressing.

Access to the settings screen

  • Setting Screen
  • Go to “Image Qualities”


  • Quality Level Table
  • Test Quality Level
  • Options
  • Recompress the Uploaded Images
  • Generate WebP Image Automatically


  1. Enter “Still BE Image Quality Control” in the plugin search field.
  2. Once you find this plugin, click “Install Now” to install and activate it.

  3. Upload “stillbe-image-quality-control” directory to the “/wp-content/plugins/” directory.

  4. Activate the plugin through the Plugins menu in WordPress.




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Contributors & Developers

“Still BE Image Quality Control” is open source software. The following people have contributed to this plugin.


“Still BE Image Quality Control” has been translated into 1 locale. Thank you to the translators for their contributions.

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Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



Fix a bug that the setting values cannot reset.


Fix some bugs.


Changed the test image preview to an image size that takes into account the device pixel ratio.


Add the function to test quality level.


Update the description on the setting screen.


Compatible with WordPress 5.8. Fixed a bug that the original image WebP was not generated.
Updated to interrupt the recompression process.


First Release on The WordPress Plugin Directory


Organized items on the setting page and added explanations. Changed the settings to apply.


Add a Setting Page & Selected the Editor Changed to Prioritize WebP-enabled Library.


When Deleting an Attachment, Delete WebP at the Same Time.


Changed WebP Creation Method to ‘cwebp’ Utility.


Add Classes that extends the Core Image Editor and Set the Compression Quality when Creating Resized Images with GD / Imagick.


Overwrites the All Resized Images with GD functions after ‘wp_generate_attachment_metadata’ Hook.