php - Change default gallery images - Currently they are displaying full size imagese

Right now my page load file size is 350mb... for a website...

The reason is that the gallery is loading in the full size 4000px+ images when they are actually a mere 250px in the page:

Is it possible to display the smallest thumbmail, or even the large image until the user clicks on the image.

I know PHP but I don't know Wordpress, so I would be happy to write this myself if I could understand where to make these changes.

Thanks guys :)

Right now my page load file size is 350mb... for a website...

The reason is that the gallery is loading in the full size 4000px+ images when they are actually a mere 250px in the page:

Is it possible to display the smallest thumbmail, or even the large image until the user clicks on the image.

I know PHP but I don't know Wordpress, so I would be happy to write this myself if I could understand where to make these changes.

Thanks guys :)

• php
• images
• gallery

Share Improve this question asked Feb 21, 2019 at 0:12 Jamie HutberJamie Hutber 12355 bronze badges

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1 Answer 1

Sorted by: Reset to default 1

That's HUGE!

I have good news. WordPress handles creating image thumbnails. You can add new sizes or use the thumb/medium/large sizes that are baked in. You just have to call wp_get_attachment_image() with the image size as long as the image are in the media library.

Want to add a new image size for a thumbnail? Call add_image_size() with the width/height and whether or not it should be cropped vs resized.