Responsive Images
Deliver appropriate image resources for different displays.
What this solves
Use screenshots or diagrams without unnecessary transfer size. This pattern is useful when the business question is clear but a generic tutorial is too abstract.
The rule
Use srcset/sizes when you have multiple raster sizes; prefer SVG for simple diagrams.
<img src="chart-800.webp" srcset="chart-400.webp 400w, chart-800.webp 800w" alt="...">Real-work checklist
- Define the business key and expected grain before writing the formula, query or markup.
- Test the pattern on a small known sample where you can verify the answer manually.
- Check missing values, duplicates and data types before trusting a large result.
- Scale to the real file or database only after the logic is proven.
Common mistake
Always provide useful alt text when the image conveys information.