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Image Alt Text Generator Generate SEO-friendly alt text suggestions for images based on context and keywords.

Image Alt Text Generator illustration
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Image Alt Text Generator

Generate SEO-friendly alt text suggestions for images based on context and keywords.

1

Describe the image

Enter a brief description of what the image shows or the context it appears in.

2

Add target keyword

Optionally include a target keyword to incorporate naturally into the alt text.

3

Choose and copy

Select from multiple generated alt text suggestions optimized for SEO and accessibility.

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What Is Image Alt Text Generator?

An Image Alt Text Generator is a tool that creates descriptive, accessible, and SEO-friendly alt attributes for images, serving two critical purposes: describing images for visually impaired users using screen readers, and telling search engines what an image depicts for image search rankings. Web developers and content creators use it to ensure their websites are image accessibility compliant and optimized for alt text seo. One specific problem it solves is generating descriptive yet concise alt text that naturally incorporates target keywords without keyword stuffing.

The tool is designed to address the challenge of creating high-quality alt attributes by parsing filenames, incorporating context and target keywords, and composing alt text under 125 characters. What makes this tool different is its ability to generate alt text based on filename hints, context, and target keywords, as seen in the generateAlt function. It also allows users to copy generated alt text or all images as HTML, making it easier to implement image accessibility best practices.

It includes features such as a character limit warning, ensuring alt attributes are concise for screen reader compatibility, and an option to copy all generated alt text as HTML, streamlining the process of adding descriptive alt tags to multiple images. By using this tool, developers can improve their website's image accessibility and optimize for alt text seo, ultimately enhancing their site's overall user experience and search engine rankings.

Why Use Image Alt Text Generator?

  • Generates multiple alt text variations for each image
  • Balances SEO keywords with natural, descriptive language
  • Accessibility-compliant suggestions following WCAG guidelines
  • Character length optimization (under 125 characters)
  • Context-aware suggestions based on image description and keywords

Common Use Cases

E-commerce Products

Generate alt text for product images with brand and product names.

Blog Images

Create descriptive alt text for editorial and stock photos.

Accessibility Compliance

Ensure all images meet WCAG accessibility requirements.

Image SEO

Optimize alt text for Google Image Search rankings.

Technical Guide

Alt text goes in the alt attribute of the <img> tag: <img src="photo.jpg" alt="Your alt text here">. Best practices: describe the image content specifically, keep under 125 characters (screen readers may truncate longer text), include relevant keywords naturally (not stuffed), don't start with "Image of" or "Picture of", and use empty alt="" for purely decorative images. Google uses this attribute as a primary signal for image search rankings. Images with descriptive attributes are also more likely to appear in Google Discover and web search image carousels.

Tips & Best Practices

  • 1
    Describe what the image shows specifically, not generically
  • 2
    Keep alt text under 125 characters for screen reader compatibility
  • 3
    Don't start with "Image of" or "Photo of" — screen readers already announce it as an image
  • 4
    Use empty alt="" for decorative images that don't convey information
  • 5
    Include your target keyword naturally — only when it genuinely describes the image

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Frequently Asked Questions

Q How long should alt text be?
Under 125 characters. Some screen readers truncate at this length. Be concise but descriptive.
Q Should every image have alt text?
Yes, but decorative images should use empty alt="" to be skipped by screen readers. Content images need descriptive alt text.

About This Tool

Image Alt Text Generator is a free online tool by FreeToolkit.ai. All processing happens directly in your browser — your data never leaves your device. No registration or installation required.