Alt Text Generator
Describe the image and the context where it appears (blog post, product page, dashboard, email) and get 2-3 concise alt-text options plus a longer description for informative images. The output follows WCAG 2.2 non-text content guidelines: under 125 characters, no 'image of' prefixes, describes function rather than pixels for UI screenshots, and suggests empty alt for purely decorative images. AI-powered.
Alt text rules applied
- • Under 125 characters for screen readers
- • No "image of" or "picture of" prefixes
- • Describes function, not pixels, for UI shots
- • WCAG 2.2 non-text content guideline
- • Empty alt suggested for decorative images
- • Longer description when charts or data are shown
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Frequently Asked Questions
- Should alt text include 'image of'?
- No. Screen readers already announce 'image' before reading the alt text, so 'Image of a golden retriever' becomes 'Image image of a golden retriever' to listeners. The tool avoids this prefix automatically.
- What about decorative images?
- For purely decorative images (dividers, background flourishes, icons next to labeled buttons) the tool recommends an empty alt (<code>alt=""</code>) so screen readers skip them. Empty alt is the correct markup — omitting the attribute is not the same and screen readers handle it differently.
- How does it know what to say for UI screenshots?
- It describes the function of the UI, not every pixel. 'Dashboard with 3 unread notifications' is better than 'Screenshot showing a navigation bar with icons, a content area, and three red badges labeled with numbers.' If the screenshot demonstrates a specific step, the alt text reflects the step.
- When should I use the longer description?
- For images that convey complex information — charts, diagrams, infographics. The longer version goes in a <code>figcaption</code> or a linked description page, while the short alt stays under 125 characters. Both are generated so you can pick the right level of detail.
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About Alt Text Generator
Describe an image and its context, get concise WCAG-compliant alt text for screen readers. Free, no login. This AI-backed tool sends your input to MarkdownMe's capped AI endpoint to generate the result. You choose whether we keep it to improve the tools. See the privacy page. No account is required. MarkdownMe provides free, fast, and reliable Markdown tools for developers, writers, and anyone who works with Markdown.