How long does this usually take?

About 10 minutes on most CMS and code stacks when you already have access to edit the page.

Start with: Add width and height that match the image’s display box. Then use the platform picker on this page for placement notes.

Set image width and height

Unos 10 minÚltima actualización: 25 ago 2026

Width and height (or CSS aspect-ratio) stop layout shift while images load. Follow the steps below on your stack, then re-check the live URL.

Width and height (or CSS aspect-ratio) stop layout shift while images load.

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Tu stack

Lo recordamos en este navegador para que la siguiente guía use el mismo CMS.

Time	~10 min
Category	Performance
Steps	2
Stacks	WordPress, Shopify, Webflow, Next.js, HTML, more

Add alt="…" on each <img>, plus width and height when you know them.

Snippet

<img src="/photo.jpg" alt="Description" width="800" height="600">

What does “Set image width and height” fix?: Width and height (or CSS aspect-ratio) stop layout shift while images load.
How long does this usually take?: About 10 minutes on most CMS and code stacks when you already have access to edit the page.
Where do I start?: Start with: Add width and height that match the image’s display box. Then use the platform picker on this page for placement notes.