It creates additional copies of images in the newly defined sizes. Regenerating images sizes does not affect your original upload. At the same time, you also can pause it by clicking Abort Resizing Images option at any time.Īlternatively, you can also regenerate image sizes for individual or multiple images in Media → Library. You should be patient during the whole process. Pressing the regenerate thumbnail button will start generating new image sizes defined by your theme or in Settings → Media page. It takes a while to generate all thumbnails especially there are too many old uploads. Note that this thumbnail generation is irreversible, but you are able to covert thumbnail dimensions into the old values by clicking this button again. Thumbnails. As is showed in the following screenshot, you can regenerate all images in the specified sizes by clicking the Regenerate All Thumbnails button.
If everything goes successfully, you can find it in the Installed Plugin as follows.Īfter activating the plugin, go to Tools → Regen.
Wordpress regenerate media meta install#
You just need to search this plugin in the Plugins → Add New section and click the Install and Activate buttons to put it into effect. To generate images in newly defined image sizes, install and activate the Regenerate Thumbnails plugin. This process is often referred to as regenerating thumbnails. To solve this problem you need to generate new sizes for all previously uploaded images. Many WordPress themes take advantage of this feature and define new image sizes, but the problem is that these new image sizes are only applied on the images you upload after activating the theme. That’s when you need to regenerate thumbnails or new image sizes in WordPress.īy default when you upload an image to WordPress, it creates different sizes and saves them in the uploads folder. Even if you try to adjust image sizes in Settings → Media, it doesn’t solve the problem. (took quite long time for a few hundred attachments, so consider to build in a counter and do some from-to limiter inside the foreach, as limiting the posts_per_page won't work well, only if you order by rand, and run lots of times, but it's not a good idea :)) require_once('wp-load.When you switch to a new theme which uses post thumbnails, there is occasionally a situation that all the old thumbnails look ugly and distorted. Saving for the future the origin source, but I had to remove the meta query to work well.
There are some non-working links above, so if somebody still struggling with this in 2021 (specially after moving WP), I found a working solution here: Unserialized _wp_attachment_metadata for a "fixed" image: Array Unserialized _wp_attachment_metadata for a previously correct image: Array
Wordpress regenerate media meta code#
The above code fixes the missing thumbnails on the media library, but with some inconsistencies: Update_post_meta($id, '_wp_attachment_metadata', $meta) * fix broken image metadata so that thumbs can be regenerated I've also come across the following snippet that is supposed to fix the missing metadata, but it isn't working as intended (see details after code) /** It also errors out on very large images, so for me it processes about 100 images and then stops.
The purpose of this question is not to find out why this happens, I wrote a different question for that.Īgain, in this context all I want is to fix the symptoms, while I haven't found out the cause yet. The files, however, are present on disk - both the original file and the "cropped" sizes. I've found out _wp_attachment_metadata isn't present in the database for those images with missing thumbnails. For some reason, some of the thumbnails of my media library are randomly becoming missing.
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