Site speed directly impacts user engagement, conversion rates, and SEO. Even small delays in page load time can lead to drops in performance. The Site Speed Tips panel in Experience Web provides actionable insights to help you streamline your campaigns and assets, which in turn reduces load time and improves the user experience.
To view your site speed tips:
Click Site Speed Tips at the top of the Campaigns tab. A purple dot means that there are new or updated recommendations available.
Pro tip: The Site Speed Tips panel is dynamic — it updates based on your campaign activity. Make checking it part of your regular workflow to keep your site fast and efficient.
The following sections describe the areas the panel can help you optimize.
Reduce load by archiving unused campaigns
What it does:
Recommends archiving active campaigns had no impressions over the last 90 days.
Note: Campaigns only appear on this list if they were not edited in the past 7 days.
Why it matters:
All active campaigns are built into the client-side script and transmitted to the browser. Targeting logic runs across all campaigns and experiences marked as active. Transmitting unused campaigns to your website contributes to unnecessary computation and bloats the script’s file size.
What you should do:
Review the listed campaigns and click Archive directly in the panel to remove them from active processing. This reduces the client-side script size, speeds up page load, and makes campaign-matching more agile.
Note: Archived campaigns are not deleted and can be unarchived if needed.
Optimize images by converting them to WebP format
What it does:
Recommends converting eligible PNG and JPEG images in your campaign variations to WebP, a modern format that reduces image size by 30–80% without compromising quality. This optimization speeds up variation rendering and overall page load.
Why it matters:
Large image files slow down campaigns and negatively impact performance scores. Using WebP helps improve Core Web Vitals and Lighthouse audits, and creates a smoother user experience, especially on mobile.
What you should do:
Click Convert next to the campaigns listed under this tip. Dynamic Yield automatically converts eligible images, updates variation references, and republishes the campaigns — no manual work required.
Use custom code wisely
What it does:
Encourages keeping custom code lean and performance-tested.
Why it matters:
Heavy or unoptimized custom code can slow down page rendering and impact user experience.
What you should do:
Review your custom code blocks and remove unnecessary logic, such as external API calls or nested loops. Test and refine the performance impact of this code before publishing.
See our Developer Docs to learn more about site optimization