AI Image ALT Text Generator

Upload images to generate SEO-friendly, accessible alt text. Boost discoverability while keeping your content inclusive.

📷
Upload an image to generate alt text
Drag and drop your image here, or click to browse
Supports: JPG, PNG, GIF, WebP, SVG • Max 10MB
Preview
Analyzing image...
Generated Alt Text SEO Optimized
0 / 125 characters
💡 Alt Text Best Practices
  • Be descriptive: Describe what the image actually shows, not what you want it to mean.
  • Keep it concise: Aim for 125 characters or fewer. Screen readers may truncate longer text.
  • Include keywords naturally: If relevant, include your target keyword, but avoid stuffing.
  • Skip "image of": Screen readers already announce it as an image.
Paste Image Filenames

Enter one filename per line (e.g., hero-banner-2024.jpg, product_blue_shoes.png). The tool will generate clean, readable alt text.

What is Image Alt Text?

Alt text (alternative text) is a written description of an image that appears when the image cannot be displayed. It serves two critical purposes: accessibility for visually impaired users who rely on screen readers, and SEO by helping search engines understand image content.

Search engines cannot "see" images the way humans do. They rely on alt text to understand what an image depicts, which influences how images appear in search results and contributes to overall page relevance.

The Dual Role of Alt Text

Alt text makes image content accessible to visually impaired people through descriptive text read by screen readers. This is a critical accessibility feature required by WCAG guidelines.

It's also an important part of SEO for search engines like Google and Pinterest who use the alt text to understand the image and the content around it so they can display it when it's relevant to the searcher's query.

How Alt Text Improves Pinterest SEO

Pinterest is a visual search engine that surfaces Pins based on user queries. By intentionally including key terms in the alt text of your pin images, you signal to the Pinterest algorithm that your Pin is closely related to that term.

This makes those pins more likely to appear for relevant searches. Alt text is one of many factors the Pinterest algorithm considers when ranking content.

How to Write Effective Alt Text

  • Be descriptive: Describe what the image actually shows.
  • Keep it concise: Aim for 125 characters or fewer.
  • Include keywords naturally: Don't stuff, but include if relevant.
  • Skip "image of": Screen readers already announce it.
  • Be specific: "Golden retriever playing fetch" beats "dog outside".
  • Write for humans: Use proper grammar and punctuation.

Best Practices for Image SEO

Alt text is just one part of image optimization. For maximum SEO benefit, combine it with these practices:

  • Use descriptive filenames: Rename files to describe the content (e.g., blue-running-shoes.jpg instead of IMG_1234.jpg).
  • Compress images: Large files slow down pages, hurting rankings. Use WebP format when possible.
  • Add structured data: Use schema markup for product images, recipes, and other content types.
  • Include images in sitemaps: Help search engines discover and index your images faster.
  • Use responsive images: Serve appropriately sized images for different devices with srcset.
  • Consider context: The surrounding text and page topic influence how search engines interpret images.

Remember that alt text should describe the image content, not the page content. If an image is purely decorative (like a border or spacer), use an empty alt attribute (alt="") so screen readers skip it.