Is it possible to implement lazy load images in Webflow CMS and has anyone successfully implemented code for this?

Implementing lazy loading for images in Webflow CMS can enhance your website's performance by delaying image loading until they need to be displayed. Here's how you can achieve this:

​

1. Enable Lazy Loading in Webflow

​

• Understand Lazy Loading: Webflow automatically enables lazy loading for images using the loading="lazy" attribute as per modern HTML standards. This is built-in for all images added via the designer.
• Check Automatic Implementation: To confirm, inspect an image element in your live website. Ensure it contains the loading="lazy" attribute.

​

2. Manually Add Lazy Loading to Custom Code

​

If you're looking to implement lazy loading manually, perhaps for images added via custom code instead of the designer:

​

• Add Loading Attribute: Manually add loading="lazy" to the <img> tags within your custom code embeds.
• Use Custom Attributes: If using code, make sure each <img> tag includes loading="lazy" where applicable.

​

3. CMS Collection Images

​

For images pulled in dynamically via CMS collections:

​

• Automatic Lazy Loading: Webflow already applies lazy loading to CMS images automatically. Verify this again by inspecting the render.

​

4. Verify Implementation

​

• Test Performance: Use developer tools like Lighthouse or inspect the network activity to ensure images load only when scrolled into view.
• Cross-Browser Check: Ensure compatibility across different browsers, checking that loading="lazy" does not interfere with desired behavior.

​

Summary

​

Webflow automatically applies lazy loading to images within its designer, including CMS images, using the loading="lazy" attribute. For custom code, you can manually add this attribute to your <img> tags. Always verify the implementation by checking the live site's HTML.