On-Page

Upload an Image. Get Alt Text That Fits the Page.

Drop in an image and the AI reads it, then writes three alt text options for the role the image plays on your page. You choose one and copy it. The image is not stored.

First run free, no sign-up
1 credit a run after that
Images are never stored

ImageDrop an image here, or choose oneJPG, PNG, WebP or GIF. Large images are shrunk for you. Nothing is stored.

What is the image for?InformationalShows content the page relies onFunctionalA button, link or iconComplexA chart, diagram or infographicDecorativeVisual only, no alt text needed

Target keyword (optional)

Used only if it fits what the image shows.

About the page (optional)

A line on what the page is about helps the options fit.

Your first run is free.

Your alt text appears here

Choose an image and its role. You get three options to compare, and the image is not stored.

What Is Alt Text, and Why Does It Matter?

Alt text is a short written description of an image, added to the image tag. Screen readers read it aloud for people who cannot see the image. Search engines use it, with the file name and the text around the image, to understand what the image shows.

Good alt text depends on the image's job. A photo that carries information needs a description. A logo that links home needs to say where the link goes. A decorative flourish needs no alt text at all, and a good description there only adds noise. This product asks what the image is for, then writes to that.

3alt text options for every image
4image roles, including decorative
4 MBlargest upload, in 4 image formats
0images stored

How It Works

4 steps, and you stay in control of the result.

Upload the image
Drop it in or choose a file. It is shrunk in your browser before it is sent, so uploads are fast.
Say what it is for
Informational, functional, complex or decorative. Each is written differently, and a decorative image gets no alt text.
Add context if you want
A target keyword and a line about the page help the options fit. Neither is required.
Pick one and copy it
Compare three options, check the length, and copy the one you want.

What You Get

Reads the image for you

No typing a description of what is in the picture. The AI looks at it and writes from what it sees.

Role-aware

A product photo, a button icon and a chart are described differently. Decorative images are told to use empty alt text, as accessibility guidance says.

Keyword used naturally

If your keyword fits what the image shows, it is included. If it does not fit, it is left out, so you do not end up with stuffed alt text.

Length check

Each option shows its character count against a practical limit of about 125, because screen readers can cut off longer text.

Three options

A descriptive version, a short one and one written around the action or purpose, so you can match the tone of the page.

Nothing is stored

The image is processed in memory and discarded. Nothing is kept on our servers once your result is ready.

What You Get Back

You give it: A photo of a person using a laptop at a desk, set as informational, with the keyword "seo audit" and a page about site audits.

1. Person reviewing an SEO audit report on a laptop at a desk
2. Laptop showing an SEO audit report
3. Marketer checking audit results on a laptop

An illustration. The options you receive depend on your image, its role and the context you add.

Alt Text Generator vs Writing It by Hand

For five images, writing alt text by hand is fine. For a media library or a long article it is slow, and it is the task that gets skipped.

By hand compared with Image Alt Text Generator
Task	By hand	With this product
Describing the image	Look at it, think of wording, write it	Read from the image and written for you
Choosing what to say	Guess whether it should be descriptive or short	Written for the role you pick, including decorative
Using a keyword	Try to fit it in without stuffing	Included only when it fits what the image shows
Checking length	Count characters	Shown beside each option
Doing many images	Repeat the same thinking for each one	Upload, pick, copy; the site details can fill in for you

Where doing it by hand goes wrong

It gets skipped

Alt text is the last task before publishing, so it is the one dropped under time pressure.

Filenames and filler

IMG_4021.jpg or "image of" tells nobody anything. Both are common when no one has time.

Stuffed keywords

Repeating a keyword in every alt attribute reads badly in a screen reader and does not help search.

Decorative images get descriptions

A long description on a divider line makes a page tedious for screen reader users.

Write Alt Text for the Next Image in Seconds

Upload an image, choose its role and copy the option that fits.

Use it now Create a free account

What It Does Not Do, and Its Limits

So you know what to expect before you start.

One image per run. JPG, PNG, WebP or GIF up to 4 MB; larger images are shrunk in your browser first.
The AI describes what is visible. Only you know what the image means on your page, so read the option you choose.
The AI is told not to guess who people in a photo are, so check that it has not.
A decorative image gets the answer to use empty alt text, and no model is called.
A visitor gets one free run. After that it costs 1 credit a run.

Who Uses It

SEO managersClear the "missing alt text" findings from an audit without writing hundreds of descriptions from scratch.
Content editorsAdd alt text while you add the image, without leaving the editor to think of wording.
Ecommerce teamsDescribe product photos consistently, with the product name in natural wording.
Accessibility ownersGet a sensible starting point that follows the image's role, then review it.
DevelopersFill in alt attributes in templates and component libraries with text that makes sense.

How to Write Good Alt Text

Whether you use this product or write it yourself, these rules hold.

Describe what matters on this page: The same photo can need different alt text on different pages. Describe what the image adds to the page you are on.
Skip "image of" and "picture of": Screen readers already say it is an image. Start with the content.
Keep it short: Aim for a sentence or less. About 125 characters is a practical limit.
Use empty alt for decoration: Purely decorative images should have alt="" so screen readers skip them. Leaving the attribute out is not the same thing.
Say where a linked image goes: If the image is a button or a link, describe the action or destination, not the picture.
For charts, say the point: Give the main finding in the alt text and put the full data in the text near the chart.

Where the Rules Come From

The checks follow these official documents. Read them, and check your result with the ones marked Test.

W3C: an alt decision treeReference
Google: image best practicesReference

With a free account

Your Site Context Fills In

Signed in, the product uses your site's target keywords and tone of voice, so the options fit your brand without you typing the same details for every image. With one site it is chosen for you; with several, you pick once.

Create a free account

Your keywords and tone are used automatically
Pick a site once and every product uses it
Run history is saved without saving the images

What Is New

4 Oct 2026Upload an image and the AI reads it. The image is checked, shrunk and discarded after the run: it is never stored.
4 Oct 2026Signed in, your site's keyword and tone are used.

Questions, Answered

What is alt text?

Alt text is the text in an image's alt attribute. Screen readers read it aloud, it shows if the image fails to load, and search engines use it to understand the image.

Do you store my images?

No. The image is shrunk in your browser, sent once, read by the AI and discarded. We do not save it. If you are signed in, we keep a record of the run, such as the role and the text produced, but not the image.

How long should alt text be?

A sentence or less. Around 125 characters is a practical limit, because some screen readers cut off longer text. The product shows the length of each option.

Should I put my keyword in alt text?

Only if it describes the image. A natural mention can help search engines understand the image, but repeating a keyword across many images is stuffing, and it reads badly for screen reader users.

When should alt text be empty?

When the image is decorative, such as a divider or a background flourish. Use alt="" so assistive technology skips it. Choose Decorative as the role and the product will tell you so.

What file types and sizes work?

JPG, PNG, WebP and GIF. Large images are shrunk in your browser before they are sent, so a big file is fine.

How much does it cost?

Visitors get one free run. After that a run costs 1 credit, and a free account includes 10 credits a month.

Can I trust the result without checking?

Treat it as a strong first draft. The AI describes what it sees, but only you know what the image means on your page. Read the option you choose and edit it if needed.

Page checked against the product on 4 October 2026.

Built by an Agency That Uses It

Skymoon SEO Suite is made and maintained by Skymoon Infotech, a digital growth agency founded in 2023 in Ahmedabad. Each product started as a task the team repeated on client work, and is used there before it is released here.

408, Iscon Emporio, Satellite, Ahmedabad, Gujarat 380015, India
Skymoon Infotech on LinkedIn

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