Free AI Alt Text Generator

Generate descriptive alt text for any image.

This alt text generator gives you 3 options and lets you hear how each one sounds:

About this image alt text generator

Our free alt text generator writes accessible, SEO-friendly alt text for any image in seconds.

Upload or paste an image and our AI returns three alt text options under 125 characters, the screen-reader-friendly length Google and accessibility tools both prefer.

Use this alt text generator on product photos, blog hero images, infographics or screenshots; every output is keyword-aware without being keyword-stuffed.

How to use Image Alt Text Generator

  1. 1

    Add Your Image

    Upload, drag in or paste (⌘V) any image. Large photos are resized for you.

  2. 2

    SEO Optimization

    Our tool incorporates natural keywords while maintaining accessibility standards.

  3. 3

    Generate Alt Tag

    Receive a descriptive alt text snippet ready for your HTML or CMS.

  4. 4

    Improve Accessibility

    Use the generated text to help visually impaired users and boost image search rankings.

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Frequently asked questions

What is alt text and why is it important?

Alt text (alternative text) describes images to search engine crawlers and users who rely on screen readers. It's essential for both SEO and web accessibility.

Should I include 'image of' in my alt text?

No, screen readers already announce that it's an image. You should start directly with the description to save time for the user.

Can alt text help with image search rankings?

Yes! High-quality, descriptive alt text is the primary way Google understands your images, helping them show up in Google Image Search.

How long should alt text be?

Keep it under 125 characters if possible. Most screen readers stop reading after that point, so brevity and clarity are key.

Should every image have alt text?

Decorative images (like background patterns) should use an empty alt attribute (alt=''), while informative images should have descriptive alt text.

Is this alt text generator free?

Yes. This alt text generator is free with no signup. Upload or paste an image and get three alt text options in seconds.

Which image formats can I upload?

Any common image your browser can open, such as JPG, PNG, WebP and GIF. You can upload, drag it in, or paste it straight from your clipboard.

Why is my image resized before upload?

Large photos are scaled down in your browser to a longest side of 1280 pixels. That is plenty for accurate alt text and it means big phone photos work without hitting upload limits.

What is the page topic field for?

It tells the AI what the page is about, so the keyword-focused option can include your topic naturally. It is optional.

What does Screen reader hears mean?

It shows how the selected alt text sounds to a blind visitor using a screen reader. If it sounds odd read aloud, pick another option or edit it.

Are my images stored?

No. Your image is sent to the AI model only to write the alt text, and we do not keep a copy.

How do I write good alt text?

Describe what the image shows and why it is on the page, in one plain sentence. Be specific (a golden retriever on autumn leaves, not dog), skip phrases like image of, and include a keyword only when it fits naturally.