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I'd like to auto-generate images, or rather image sizes, in old posts where the size is currently missing.

Specifically I'm hoping to generate sizes on the fly when a specific (old) image size is missing, but the original image is still in tact.

Background: A while back I cleaned house with images on a site in hopes of normalizing my image sizes. Totally forgetting about the various older auto-generated images that were soft-cropped. So now there are a couple hundred old images that aren't displaying.

Details: I did regenerate all the sizes when the house cleaning took place.

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If you have access to install, or if it is available on your server I would recommend using WP-CLI. It has a command to regenerate the media:

wp media regenerate

If not, you can try a plugin such as Regenerate Thumbnails

Good luck!

  • Eh, I couldn't think of a better way to word the question. But I was hoping to find a way to auto-generate a specific size when a page loads and the specific size is missing, but the original is in tact. The problem arose from me getting rid of soft-cropped sizes, so the originals have dimensions that are all over the place. :/ – Squish Jun 11 '15 at 1:24
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If the images are all referred to by URLs embedded in post content, then you could just upload the missing files from an old backup.

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