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Guidelines · WSG 3.3

Modularize bandwidth-heavy components

Maps, players, editors and chat widgets are the heaviest things on most pages, and are often invisible until a visitor interacts with them, if ever.

How to satisfy it

  • Dynamically import heavy components on interaction or when they scroll into view.
  • Replace an embedded player or map with a static preview that loads the real thing on click.
  • Prefer server rendering for content that does not need client-side interactivity.

Measured pages failing this guideline

From the 60 most recently measured pages. Each links to its full report.

This page explains how Carbonless applies WSG 3.3. The guideline itself is published by the W3C Sustainable Web Design Community Group: Web Sustainability Guidelines.