Links and media · Lesson 6 of 8 · 7 minutes

Links and media: Responsive image dimensions

Intrinsic width and height let the browser reserve the image aspect ratio before loading the asset.

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PreviewNo external resources

Your objectives

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1
Build responsive image dimensions
Build this first target: <img> (src="map.png", alt="Workshop entrance map"). Inspect the structure before checking the lesson.
Hint & worked example
Intrinsic width and height let the browser reserve the image aspect ratio before loading the asset.
The requested elements, attributes, content, and hierarchy exist outside comments.
```
<img src="map.png" alt="Workshop entrance map">
```
Common mistake to avoid: A visual appearance alone guarantees the intended HTML meaning.
2
Extend the responsive image dimensions example
Extend your file to include: <img> (src="map.png", alt="Workshop entrance map", width="800", height="600"). Inspect the structure before checking the lesson.
Hint & worked example
Intrinsic width and height let the browser reserve the image aspect ratio before loading the asset.
The requested elements, attributes, content, and hierarchy exist outside comments.
```
<img src="map.png" alt="Workshop entrance map" width="800" height="600">
```
Common mistake to avoid: Replacing semantic elements with generic divs automatically improves accessibility.
3
Verify the complete responsive image dimensions pattern
Finish the pattern with: <img> (src="map.png", alt="Workshop entrance map", width="800", height="600", loading="lazy"). Inspect the structure before checking the lesson.
Hint & worked example
Intrinsic width and height let the browser reserve the image aspect ratio before loading the asset.
The requested elements, attributes, content, and hierarchy exist outside comments.
```
<img src="map.png" alt="Workshop entrance map" width="800" height="600" loading="lazy">
```
Common mistake to avoid: A visual appearance alone guarantees the intended HTML meaning.

Understand the pattern

Intrinsic width and height let the browser reserve the image aspect ratio before loading the asset.

Misconceptions to reject

A visual appearance alone guarantees the intended HTML meaning.
Replacing semantic elements with generic divs automatically improves accessibility.

The preview is a sanitized subset, not a full browser compatibility test.

Worked example and expected result

<img src="map.png" alt="Workshop entrance map" width="800" height="600" loading="lazy">

Intrinsic width and height let the browser reserve the image aspect ratio before loading the asset.

Try a variation

Adapt the final example to a different project name while retaining its structure and relationships. A different context still needs a real browser and accessibility check.

Explain it

Which statement correctly explains responsive image dimensions?A visual appearance alone guarantees the intended HTML meaning.Replacing semantic elements with generic divs automatically improves accessibility.Intrinsic width and height let the browser reserve the image aspect ratio before loading the asset.

Apply it elsewhere

You reuse responsive image dimensions in a different project. What must still be verified?Only whether the source code has the same number of lines.The meaning, relationships, and accessible names in the new document.Nothing; passing a single exercise guarantees every future use.

Keep the momentum.

Complete the lab, then explain and apply the pattern.

Next: Links and media: Downloadable resources Try an incident drill

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MDN: HTML structure