For a webshop running on WooCommerce, I changed the default thumbnail size in
WC > settings > products > display to:
- Catalog Images: 247x247px
- Single Product Image: 510x510px
- Product Thumbnails: 130x130px
- Hard Crop selected.
At first this went fine, new thumbs were regenerated and loaded via srcset on the webpages. However, because this configuration caused unsharp images on some screen resolutions, I decided to double thumbnail sizes (resolution 2X).
Nothing happened at this time, so I tried a lot of things to solve this issue: just keep trying to run "Regenerate thumbnails" on all files, run on select files, tried the "Force regenerate thumbnails" plugin, tried "Thumbnail Cleaner" plugin, added a custom function but all to no avail:
Renerate thumbnails shows a message like
"product-image-xxx" (ID XXXX) was successfully resized in 0.840 seconds.
but when I look in my FTP media folder, no new files are created. I remember from the time this plugin worked fine, it took a lot longer to create the desired thumbnails. I also tried disabling all thumbnail plugins except Regenerate thumbnails and emptying functions.php: no effect.
What is going wrong here? Running latest version of WP, WooCommerce and Regenerate thumbnails.