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WordPress fix guide

Responsive Images Missing srcset or sizes Attributes on WordPress

Images are served without srcset or sizes attributes, forcing browsers to download full-size images regardless of the viewport. This wastes bandwidth on mobile and smaller screens.

Issue ID: CWV-SRCSET-SIZES-001Severity: moderateEffort: S

Why this matters

Images are served without srcset or sizes attributes, forcing browsers to download full-size images regardless of the viewport. This wastes bandwidth on mobile and smaller screens. This affects load speed, Core Web Vitals, and how many visitors stay long enough to convert.

WordPress fix path

How to fix this on WordPress

Use the page editor, theme, or SEO tooling depending on where this issue lives.

  1. 1Inspect the page and theme output.
  2. 2Apply the fix in the most direct place.
  3. 3Publish and validate with a re-audit.

After you fix it

  • Inspect key images in DevTools and confirm srcset and sizes attributes are present

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