Detailed Definition
Alt text (alternative text) is descriptive text placed inside the image tag in HTML. It is read aloud by screen readers for visually impaired users and indexed by search bots to understand images.
Glossary HubSEO
What is Alt Text?
An HTML attribute used to describe the contents and context of an image.
1 min read•Updated 2026-06-08
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Note: Unicode formatting (Bold / Italic) works separately from Case Converter tools. For best results, apply case conversion first, then use Unicode formatting.
Practical Example
Code/Output block<img src="logo.png" alt="TechMind productivity tools logo with purple accent" />
Why It Matters
Alt text is the primary method for making web imagery accessible. It also allows images to rank in Google Images, generating direct organic referral traffic.
Common Use Cases
1
Describing charts and infographics in educational articles
2
Providing text fallbacks for slow connections when images fail to load
3
Adding targeted descriptive keywords to improve page context relevance
Frequently Asked Questions
Yes, decorative images can have empty alt text (alt=""), but informative images must describe the visual.
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