Best SEO Checklist
ONE FOCUSED ACTION

Use compressed and appropriately sized images optimized for mobile delivery.

Mobile SEO

1 checklist items

Save for later 0

Use × to move an item here. You can restore it when you’re ready.

    Your checks and saved items stay in this browser. Nothing is submitted.

    Why this matters

    Large, unoptimized images slow mobile load times causing higher bounce and lost rankings.

    A STARTING-POINT EXAMPLE

    Hypothetical standard operating procedure

    Adapt this example to your site, access, tools, and change process. It is our suggested procedure, informed by the sources below.

    1. Audit images for desktop-size usage on mobile pages.
    2. Resize images to match device viewport requirements.
    3. Compress images using WebP or AVIF formats with fallbacks.
    4. Leverage responsive srcset attributes to serve optimal images.
    5. Test load times on mobile network conditions to validate improvements.

    Watch for

    Serving desktop-sized images to mobile devices wastes bandwidth and degrades speed.

    Definition of done

    Mobile pages load images sized for screen with compression and modern formats.

    Sources & attribution

    1. Mobile SEO Mistakes That Hurt User Experience and Rankings ↗

    Original checklist wording and example SOP by Best SEO Checklist, using source-grounded AI assistance. Editorial contact: Ted Kubaitis, @tedkubaitis on Teams. Check current source guidance before implementation.