HTML MASTER CLASS /// IMAGES & MEDIA /// VISUAL WEB /// ACCESSIBILITY FIRST /// HTML MASTER CLASS /// IMAGES & MEDIA /// VISUAL WEB /// ACCESSIBILITY FIRST /// HTML MASTER CLASS /// IMAGES & MEDIA /// VISUAL WEB /// ACCESSIBILITY FIRST ///

HTML Images

Bring your pages to life. Embed media with the img tag and master accessibility with alt text.

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Tutor:Images make the web visual. In HTML, we use the <img> tag to embed images. Unlike paragraphs or headings, the <img> tag is a void element. It does not have a closing tag.

Skill Matrix

UNLOCK NODES BY MASTERING ATTRIBUTES.

Concept: The Tag

The <img> tag embeds an image. It is empty, containing attributes only, and does not need a closing tag.

System Check

Is the <img> tag a void element?

Yes, it has no closing tag.No, it needs </img>.Only in HTML4.Depends on the browser.

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HTML Images & Media

Pascual Vila

Frontend Instructor // Code Syllabus

Images are a vital part of the web experience. The <img> tag allows you to embed graphical content, but it requires careful attention to attributes to ensure performance and accessibility.

The Source Attribute

The src attribute is mandatory. It tells the browser where the image file is located. This can be a relative path (e.g., /images/logo.png) or an absolute URL (e.g., https://example.com/logo.png).

Alternative Text

The alt attribute provides a text description of the image. This is displayed if the image fails to load and is read aloud by screen readers for visually impaired users. Good alt text describes the content and function of the image.

Width and Height

Always define width and height attributes. This allows the browser to reserve space for the image before it downloads, preventing Cumulative Layout Shift (CLS), which can negatively impact user experience and SEO.

View Full Transcript+

This section contains detailed information about image formats (JPEG, PNG, WebP), responsive images using the picture element, and advanced accessibility techniques. Remember that decorative images should have an empty alt attribute (alt="").

Glossary

src (Source): The attribute specifying the URL of the image to display. Without this, the tag is useless.
alt (Alternative Text): Text description used for accessibility and when the image cannot be loaded.
Void Element: An element like <img> that does not have a closing tag and cannot contain text content.
CLS: Cumulative Layout Shift. A metric measuring visual stability. Adding width/height helps avoid this.
Relative Path: A link to a file relative to the current page (e.g., images/pic.jpg), opposed to an absolute URL.