If you’ve ever encountered a situation where WordPress refuses to generate different image sizes for a particular image, you’re not alone. It can be frustrating, but fear not – there are steps you can take to troubleshoot and resolve the issue. In this guide, we’ll walk you through the process in easy-to-follow steps.

Identifying the Problem:

Step 1: Investigate the Image

Start by understanding the issue. If you have an image that’s causing trouble, check its file type and filename. Ensure it follows best practices, such as having only words and hyphens in the filename.

Example Image URL:


Step 2: Check Image Sizes

Examine the sizes of the original and registered image sizes in WordPress. You can find this information in the post update, including details like full size, thumbnail, medium, and large sizes.

Full size image: 4752 × 3168
WP Thumbnail: 150 × 150 (crop)
WP Medium: 360 × 360
WP Large: 1280 × 1280

Exploring Possible Solutions:

Step 3: WordPress Logging

If you’re facing difficulties, check for WordPress logs. In the discussion, the user found an error related to insufficient memory. This information can be crucial for identifying the root cause.

Insufficient memory (case 4): /home/sites/bellavou.co.uk/public_html/development/wp-admin/async-upload.php

Step 4: Use a Regenerate Thumbnails Plugin

As suggested by a user in the discussion, try using a WordPress plugin to regenerate thumbnails. The “Force Regenerate Thumbnails” plugin can help you recreate image sizes.

Step 5: Server Access and PHP Modules

If you have SSH or shell access to the server, use php -m to check installed PHP modules. Ensure that either Imagemagick or Imagick is installed. If not, consider installing the Imagick extension for PHP. This can be crucial for image processing.

Step 6: Manual Image Resizing

If you have the necessary modules installed, consider manually downsizing the image using tools like Imagemagick. This can be helpful if the default GD library is not meeting your needs.

Engaging with Community Support:

Step 7: Seek Community Help

If all else fails, consider seeking help from the WordPress community. Share your issue on relevant forums or platforms. In the discussion, a user suggested asking on Serverfault for assistance with server-related issues.

Remember, troubleshooting can be a process of elimination. By following these steps, you can identify and resolve the issue causing WordPress not to generate different image sizes for specific images.

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