Title: Cannot create thumbnail on post image upload
Last modified: August 19, 2016

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# Cannot create thumbnail on post image upload

 *  [al3x88](https://wordpress.org/support/users/al3x88/)
 * (@al3x88)
 * [15 years, 8 months ago](https://wordpress.org/support/topic/cannot-create-thumbnail-on-post-image-upload/)
 * Hi, i’m trying to create the tumbnail after the image is uploaded, but the <select
   > that let’s me to change the size of it is disabled and i can just post in the
   original size. First the gd extension was not installed but after installed it
   nothing changed. Any other thing to try? I’ve tried to search into the code why
   it puts to disabled but i haven’t found anything..
 * Any clue?
 * Regards

The topic ‘Cannot create thumbnail on post image upload’ is closed to new replies.

## Tags

 * [cannot](https://wordpress.org/support/topic-tag/cannot/)
 * [post](https://wordpress.org/support/topic-tag/post/)
 * [thumbnail](https://wordpress.org/support/topic-tag/thumbnail/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 0 replies
 * 1 participant
 * Last reply from: [al3x88](https://wordpress.org/support/users/al3x88/)
 * Last activity: [15 years, 8 months ago](https://wordpress.org/support/topic/cannot-create-thumbnail-on-post-image-upload/)
 * Status: not resolved

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