AI Alt-Text & Caption Generator

How to generate alt-text and captions from an image

1. Click the upload area or drag and drop a photo, screenshot, product shot, or illustration onto the page.
2. Click Generate alt-text. The AI vision model reads the image and returns a concise alt-text attribute, a longer caption, and a set of relevant tags.
3. Tweak any field to match your brand voice or target keyword, then use the Copy button to paste the alt-text into your CMS, the caption into your content, and the tags into your metadata.

What you get from every image

One upload returns three separate, ready-to-use pieces of text, each with its own Copy button so you can drop them exactly where they belong.

• Alt-text: a short, accurate description for the image alt attribute. This is what screen readers announce and what shows on the page if the image fails to load.
• Caption or description: a longer sentence or two that adds context, useful for figure captions, social posts, or product detail copy.
• Tags: a set of relevant keywords you can use for metadata, internal search, or organizing an image library.

The output is fully editable. Treat it as a strong first draft, then adjust the wording to fit your brand voice or weave in a specific keyword before you publish. It is free to use, and Pro and Max accounts get higher limits and keep their history so you can revisit images you have already described.

Where alt-text and captions help

Good alt-text does real work across accessibility, SEO, and everyday content production. A clear description means a visually impaired visitor hears a meaningful sentence instead of a filename, and search engines get the context they need to understand and rank your images. When an image fails to load on a slow connection, the alt-text keeps the page readable instead of leaving a blank box.

• Product pages and listings: describe each product shot so screen readers and image search both understand what is for sale. Pair it with the Background Remover when you need clean, consistent product images first.
• Blog and editorial images: generate a caption for figures and a tight alt attribute for the markup. If a hero image needs a quick cleanup before publishing, run it through the Image Enhancer.
• Design and marketing assets: after you add callouts in the Image Editor, generate alt-text so the finished graphic stays accessible everywhere it appears.
• AI-generated visuals: images from the AI Image Generator rarely ship with useful alt-text, so describe them here before they go live on a page.

Tips for the most accurate descriptions

The tool reads what it can see, so the quality of the input shapes the quality of the output. Clear, well-lit images with a recognizable subject give the AI the most to work with, while blurry, very dark, or cluttered shots tend to produce vaguer text.

• Crop to the main subject so the model focuses on what matters. The Image Cropper makes this quick when a photo has a lot of empty space.
• If the source is small or soft, run the Image Upscaler first so details like labels and faces read more clearly.
• Generate the text, then edit it. Add the specific keyword you want to rank for, match your house style, and keep the alt attribute concise while letting the caption carry the extra context.
• Remember the tool describes the image but never alters it, so your original file stays exactly as you uploaded it.

Frequently asked questions

Is the AI alt-text generator free?

Yes, you can generate alt-text, captions, and tags for free. Pro and Max accounts get higher limits and keep their history, so you can come back to images you have already described.

What does the generator actually return?

Each run returns three things from an AI vision model: a concise alt-text attribute for the alt tag, a longer caption or description for context, and a set of relevant tags. Every field has its own Copy button so you can paste each one where it belongs.

What images give the best results?

Clear, well-lit images with a recognizable subject produce the most accurate descriptions. Photos, product shots, screenshots, and illustrations all work. Cluttered, blurry, or very dark images can lead to vaguer output, so a clean subject helps the model the most.

Can I edit the alt-text and caption?

Yes. The output is a starting point, not a final answer. Edit any field to match your brand voice, add a specific keyword, or trim it down before you publish, then copy the version you want.

Does the tool change or edit my image?

No. The alt-text generator only reads the image to describe it, so your original file is never altered. If you need to change the picture itself, use the Image Editor, Background Remover, or Object Remover instead.

Why does alt-text matter for SEO and accessibility?

Screen readers read alt-text aloud so visually impaired users understand each image, and search engines use it to understand and rank your images. Alt-text also shows on the page when an image fails to load, so a clear description keeps your content usable in every situation.