Only some images are resized using thumbs

Kirby 3 Solved ✅
1

Hi,
I am having an odd issue with thumb generation on my Kirby site. I have set up the thumbs in config as follows:

'thumbs' => [
      'srcsets' => [
          'default' => [
              '300w'  => ['width' => 300],
              '600w'  => ['width' => 600],
              '900w'  => ['width' => 900],
              '1200w' => ['width' => 1200],
              '1800w' => ['width' => 1800],
              '2300w' => ['width' => 2300],
              '2880w' => ['width' => 2880],
          ],
          'webp' => [
            '300w'  => ['width' => 300, 'format' => 'webp'],
            '600w'  => ['width' => 600, 'format' => 'webp'],
            '900w'  => ['width' => 900, 'format' => 'webp'],
            '1200w' => ['width' => 1200, 'format' => 'webp'],
            '1800w' => ['width' => 1800, 'format' => 'webp'],
            '2300w' => ['width' => 2300, 'format' => 'webp'],
            '2880w' => ['width' => 2880, 'format' => 'webp'],
          ],
      ]
    ],

Which I am using like this in my templates:

<picture>
            <source
              srcset="<?= $image->srcset('webp') ?>"
              sizes="100vw"
              type="image/webp"
            >
            <img
              alt="<?= $image->alt() ?>"
              src="<?= $image->resize(1200)->url() ?>"
              srcset="<?= $image->srcset() ?>"
              loading="lazy"
              sizes="100vw"
              width="<?= $image->resize(1200)->width() ?>"
              height="<?= $image->resize(1200)->height() ?>"
            >
          </picture>

My issue is, while all the images are being generated with the correct resized suffix (e.g. -660x) but only some are being resized. It seems to be the larger widths that are not being created, but just the original file reproduced.

I have confirmed with the hosts that GD is installed and running, which makes sense as some of the images are being resized.

Has anyone hit this issue before? I am not sure how to tackle it as it is sometimes working and sometimes not

2

Hm, if you have really large images, you might be running into script timeout issues. Have you checked your server and PHP error logs for any hints?

3

Some of the images are pretty large, so that could be it.

There was one error in the log:


Allowed memory size of 268435456 bytes exhausted (tried to allocate 187631108 bytes) in /home/highlyflammable/dev/vendor/claviska/simpleimage/src/claviska/SimpleImage.php on line 185

I will try upping the memory limit and see if that helps. Each page has quite a lot of images on as well, so it is doing a lot of work per page on that initial load. Is there a way of generating thumbs on a per-image basis at all?

Am I right that thumbs are generated on first page load?

4

Yes.

I think the janitor plugin has a command for pre-generating thumbs. I have not tested it though.

5

Thanks I will take a look at Janitor - I think ideally I would like the thumbs generated on image upload, as I am always using the pre-defined set in config. It might mean a hook would be the best approach

6

The issue was the hosting server choking - I have upped the provision for the site and asked the client to resize images before upload, which seems to have fixed the issue.

Happy to have this thread closed / deleted