Alt text is a text description for an image. Three purposes: SEO (Google understands the image and shows it in Google Images), accessibility (screen readers for blind users), and fallback when the image fails to load.
Implementation
<img src=\"...\" alt=\"description\">
Rules
1. Be specific. \"Image\" is bad. 2. Up to 125 characters. 3. Keyword naturally, no stuffing.
Empty alt
For decorative images: alt=\"\". Screen readers skip them.
Product images
Formula: brand + product + variants. \"Apple iPhone 15 Pro 256GB Titanium black\".
Infographics and tables
Alt + text description in the page content โ too much data otherwise.
Logo
\"Sayt.uz logo\" or \"Sayt.uz home\" if it's a link.
SEO benefit
Google Images indexes via alt. 10-30% of traffic possible.
File name
Not \"DSC_001.jpg\" but \"wordpress-hosting-comparison-2026.jpg\".
Schema image
Article/Product Schema image field. High quality (1200px+).
Lazy loading
loading=\"lazy\" preserves alt.
Accessibility
Screen readers (JAWS, NVDA, VoiceOver) use alt. WCAG requires it.
Mistakes
Keyword stuffing. The same alt on different images.
Sayt.uz
Every image has a unique alt. Product format. 500-1500 visits/month from Google Images.