---
title: "Free Image Alt Tag Generator | SEO Alt Text Tool"
description: "Generate SEO-optimized alt text for images that improve accessibility and search rankings. Create descriptive, keyword-rich alt tags for your images — completely free."
url: "https://snowseo.com/free-tools/image-alt-tag-generator"
---

# Write alt text
*for any image.*

Upload an image or paste its URL, and AI describes it in three to five alt texts. No signup, no card.

By ImageBy Text

Drag & drop your image here

or click to browse

Supports JPEG, PNG, GIF, WebP • Max 4MB

or paste image URL

Use this image

## Describe images
*the right way.*

Alt text helps screen readers and search engines understand your images.

- ### Upload or link

  A JPEG, PNG or WebP up to 4MB, or an image URL.

- ### Or describe it

  No image at hand? Type what it shows and get alt text from that.

- ### Short and clear

  Three to five options of up to 125 characters, ready to copy.

### More free tools

## Questions,
*answered.*

Still unsure? See SnowSEO on your own site in a 30 minute call.
[Request a demo](https://snowseo.com/book-a-demo)

- ### What is an image alt tag?

  An alt tag (also called alt text or alt attribute) is HTML code that provides a text description of an image. It appears in the img tag as the alt attribute and is used by screen readers for accessibility, search engines for SEO, and browsers when images fail to load.

- ### How does the image alt tag generator work?

  Upload an image (JPEG, PNG or WebP, up to 4 MB), paste an image URL, or describe the image in words. AI looks at the image, or reads your description, and writes 3-5 alt text options of 5 to 125 characters. Copy the one you like or download them.

- ### Is the image alt tag generator free?

  Yes. Run it without an account: 2 free uses per tool each year. Sign in for more.

- ### Why are alt tags important for SEO?

  Google uses alt text, along with other signals, to understand what an image shows. Well-written alt text helps your images appear in Google Images and reinforces your page's topical relevance.

- ### Do alt tags help with accessibility?

  Yes, alt tags are essential for web accessibility. They allow screen readers to describe images to users with visual impairments. Accessibility guidelines like WCAG require text alternatives for meaningful images. This tool writes alt text. It doesn't check your site for WCAG compliance.

- ### How long should alt text be?

  Keep it concise yet descriptive: long enough to be meaningful but short enough to be easily digestible by screen readers. Our generator writes options between 5 and 125 characters.

- ### Should I include keywords in alt text?

  Yes, include relevant keywords naturally when they accurately describe the image. The generator describes what's in the image and doesn't take a keyword, so add one yourself if it fits. Avoid keyword stuffing: the alt text should read naturally and accurately represent what's in the image.

- ### What should I write for decorative images?

  For purely decorative images that don't convey meaningful information, use an empty alt attribute: alt="". This tells screen readers to skip the image, preventing unnecessary interruptions. Decorative images include background patterns, spacers, and purely aesthetic elements.

## Be the answer.
*Starting today.*

Not sure SnowSEO is a fit?[Request a demo](https://snowseo.com/#home-demo)

[See how SnowSEO works4 min](https://www.youtube.com/watch?v=2HIlUwInrS8)