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Alt Text Generator

Generate alt text for images in seconds. Upload a picture, optionally add a focus keyword and where it will appear, and pick from three options under 125 characters: concise, SEO-focused or descriptive.

Drop an image, browse, or paste Ctrl+V

PNG, JPG, WEBP up to 10 MB. Resized to 768px in your browser before sending.

Used once, and only when it truly describes the image. Never forced or repeated.

Page context (optional)

Tell the AI where the image will appear, so the alt text describes its purpose. We only read what you type here; we don’t open the URL.

5 of 5 free tries left today

Alt text

Add an image and press Write alt text.

Results usually arrive in a few seconds.

Check existing alt text with our alt text checker.

One image alt text generator, three ways to say it

Most free tools give you one line and leave it there. This alternative text generator writes three versions from the same picture, so you choose the one that fits the page:

Concise
The shortest line that still says what matters, under 80 characters. Good for thumbnails, icons with meaning and busy listing pages.
SEO-focused
Uses your focus keyword once, only if it truly describes the image, and your page context to explain what the image does on that page.
Descriptive
Adds setting, colors and materials, still under 125 characters. Good for product photos and editorial images.

Every option follows the same rules: under 125 characters, no “image of” opening, short visible text quoted only when it carries the message, and no guessing at who someone is, their age or how they feel.

How to generate alt text for images

  1. Add the image

    Upload, drop or paste a PNG, JPG or WEBP, or paste an image link. Your browser shrinks it to 768px before sending.

  2. Add a keyword or context (optional)

    Type the phrase your page targets, and open Page context to add the URL, title, H1 or nearby text.

  3. Generate three options

    One try returns concise, SEO-focused and descriptive versions, each with a score from our checker.

  4. Copy the one that fits

    Each option has its own Copy button. Paste it into the alt field of your CMS, store or HTML.

Built-in checks on every result

Each option shows a score and its length. The score flags alt text that runs past 125 characters, opens with “image of”, looks like a file name, leans on generic words, or repeats your keyword. These are the same rules as our alt text checker, which you can use on alt text you already have.

Decorative images. If a picture is purely decorative, like a divider or background texture, the tool says so and suggests an empty alt attribute, alt="", instead of inventing a description.

Alt text AI is a first draft

The AI alt text generator sees the picture and whatever context you give it, nothing more. Read the option you pick before publishing. If the image is a link or a button, make sure the alt text says where it goes. For a fuller explanation of how alt text works for search and screen readers, read our guide to alt text for SEO.

When you need more than alt text

Alt text is one short line. For a caption, a long description of an infographic, or a full account of everything in a photo, use the AI image describer. For screenshots and scans that are mostly words, the image to text converter copies the text out so it can live on the page as real text.

A free alt text generator, no account needed

You get 5 free tries a day on each device, and each try returns all three options. You don’t need to sign up. Your image is resized in your browser and sent to an AI model on Cloudflare Workers AI; we don’t save the image, the keyword, the page context or the alt text.

Frequently asked questions

What is alt text?

Alt text, short for alternative text, is the text in an image’s alt attribute. Screen readers read it aloud, and browsers show it when the image can’t load.

What are the three options?

Concise is the shortest useful line. SEO-focused uses your focus keyword once, if it truly fits the image, and your page context. Descriptive adds visual detail. All three stay under 125 characters.

Will it always use my focus keyword?

No. The keyword is used once, and only when it honestly describes the image. If it doesn’t fit, the alt text leaves it out, because a forced keyword is keyword stuffing.

What does page context do?

It tells the AI why the image is on the page. Paste the page URL, title, H1 or nearby text, and the SEO-focused option describes the image’s purpose there. We only read what you type; we don’t open the URL.

What happens with decorative images?

If an image is purely decorative, like a divider or background texture, the tool says so and suggests an empty alt attribute (alt="") instead of writing a description.

Does alt text help SEO?

Yes, as one signal: Google uses alt text with the page content to understand images. Our alt text for SEO guide explains how to write it.

Read the alt text for SEO guide

Is the alt text generator free?

Yes. You get 5 free tries a day on each device, with no account, and each try gives all three options. We don’t save your images or the alt text.

Can it write alt text in other languages?

Yes. Pick the output language before you generate: English, Spanish, French, German, Portuguese, Italian, Dutch, Japanese, Korean or Simplified Chinese.

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