Title: Sizes needed by theme ?
Last modified: May 4, 2026

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# Sizes needed by theme ?

 *  Resolved [revixi5](https://wordpress.org/support/users/revixi5/)
 * (@revixi5)
 * [1 month, 1 week ago](https://wordpress.org/support/topic/sizes-needed-by-theme/)
 * Your plugin seems great, except that I only see the default WordPress image sizes
   in the options… Does your plugin detect and include the custom sizes required
   by the theme being used? Usually, there’s a “scan” option to list all existing
   sizes generated by the various themes used over the years (so you can then clean
   them up and update them). Thanks.

Viewing 1 replies (of 1 total)

 *  Plugin Support [Jacob](https://wordpress.org/support/users/jacobb26/)
 * (@jacobb26)
 * [1 month, 1 week ago](https://wordpress.org/support/topic/sizes-needed-by-theme/#post-18898924)
 * Good question — and yes, the plugin does detect custom image sizes, but there’s
   an important detail about how WordPress works.
 * The plugin lists all **currently registered image sizes**, including those added
   by your theme or other plugins. However, WordPress only exposes sizes that are
   actively registered at runtime.
 * So if a theme previously created custom sizes but is no longer active, those 
   sizes won’t appear in the list — even though the actual image files may still
   exist in your uploads folder.
 * Unlike some tools, there isn’t a native “scan all historical sizes” feature in
   WordPress, since it doesn’t keep a global record of past image sizes — only what’s
   currently registered.

Viewing 1 replies (of 1 total)

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 * 1 reply
 * 2 participants
 * Last reply from: [Jacob](https://wordpress.org/support/users/jacobb26/)
 * Last activity: [1 month, 1 week ago](https://wordpress.org/support/topic/sizes-needed-by-theme/#post-18898924)
 * Status: resolved