Free Gemini alt text generator

Specific, not "a photo related to".

Free Gemini alt text generator that fixes the generic filler Gemini defaults to. Written from your description, no upload. 5 free runs every 24 hours.

free runs per 24 hours: 5
rolling reset window: 24h
account required: None

Gemini alt text generator

What the Gemini alt text generator does

This Gemini alt text generator writes alt text from a short description you type, tuned to skip the generic filler Gemini tends to default to in an open chat, phrasing like "a photo related to the topic" that's technically about the image without describing anything specific in it.

It doesn't look at an uploaded image. This site doesn't process images at all, so you describe what the image shows and what it's for, and it comes back as alt text sized for a screen reader. It runs on our AI server, not your browser. You get 5 free runs every rolling 24 hours, no account and no signup.

Alt text

What alt text actually is, in plain terms

Alt text is the written alternative to an image, read aloud by a screen reader in place of the picture and shown as fallback text if the image fails to load. It's an accessibility feature first: it needs to describe what the image does in context, specifically, not in a way vague enough to fit any similar image. Function over appearance, and decorative images get an empty alt attribute so a screen reader skips them instead of announcing something meaningless.

How it works

How to write alt text from a Gemini-style description in three steps

Three steps, and no "related to the topic" filler to rewrite.

Step 1: Describe the image specifically: what it shows, and what job it's doing on the page.
Step 2: Press Generate. Your description is sent to our AI server and comes back as concise, specific alt text.
Step 3: Read it as a screen reader would announce it, confirm it names something specific, and paste it in.

Consequences

What generic alt text actually breaks

Alt text vague enough to fit almost any similar image, "a photo related to cooking" on a photo of a specific dish, tells a listener nothing they couldn't have guessed from the surrounding page. It technically fills the attribute without doing the job the attribute exists for.

Alt text on a chart that describes it generically, "an image showing statistics", skips the one thing that matters, the actual data, and alt text left on a purely decorative image forces a screen reader to announce something irrelevant on every page it appears.

The Gemini tells

Why Gemini's alt text answers need a second pass

Asked directly in chat, Gemini tends toward a specific, recognizable set of habits that lean generic rather than specific.

"Related to" phrasing: "An image related to the topic" describes the subject area without describing the actual image.
Short, clipped output: Occasionally alt text so brief it reads like it was already truncated, missing context a fuller phrase would give.
Generic filler for charts: "A chart showing data" instead of naming the actual values or trend.

Straight answer

Does Gemini-generated alt text actually meet accessibility requirements?

Not automatically. Alt text from a good, specific description can genuinely meet the intent of accessibility guidelines. Alt text from a vague description, or left generic, often doesn't, whatever generated it.

The generator is only as good as the description you give it. A specific description of what the image shows and does produces alt text worth keeping. A vague one produces generic filler that technically fills the attribute without actually helping anyone. Read every result before you publish it.

Who uses it

Who uses the Gemini alt text generator, and when

Mostly people who noticed their Gemini-drafted alt text all read like "a photo related to X" and rewrote it by hand every single time before it went anywhere near a live page.

Content teams: Getting alt text specific enough to actually describe what a listener needs.
Ecommerce sites: Generating distinct, specific alt text across thousands of product photos that would otherwise blur together generically.
Developers doing an accessibility pass: Filling in missing alt attributes flagged by an automated audit.
Bloggers: Writing alt text at publish time for screenshots and charts added throughout a draft.

FAQ

Gemini alt text generator FAQ

Everything below is answered in full, nothing to click open.

How do I generate alt text from a Gemini-style description?

Describe the image above and press Generate. You'll get concise, specific alt text, not generic "related to" filler.

Do I upload the image to this tool?

No. This site doesn't process images at all. You describe it, and the tool writes alt text from that description.

Is the Gemini alt text generator free?

Yes. 5 free runs every rolling 24 hours, no account and no signup.

Why does Gemini write such generic alt text?

It tends toward phrasing like "an image related to the topic", which is technically about the subject area without describing the specific image at all.

What is alt text actually for?

It's an accessibility feature. A screen reader announces it in place of the image, so it needs to describe function and context specifically.

What alt text should a decorative image have?

An empty alt attribute, alt="", so a screen reader skips it instead of announcing something a listener doesn't need.

How should alt text describe a chart?

Name the actual data points or trend, not just the chart type. The data is the content.

Does good alt text help SEO?

It can help image search understand your image, but it isn't a broad ranking factor. Write it for the listener, not to stuff a keyword in.

Is my description sent anywhere?

It's sent to our AI server to generate the alt text and is not used to train models.

Why does Gemini's alt text sometimes read too short?

It can clip toward brevity, occasionally leaving out context a slightly fuller phrase would give a listener.

How long should alt text be?

Long enough to convey function, short enough that a screen reader isn't reading a paragraph for one image. A sentence usually does it.

What's different between this and the plain AI alt text generator?

Same underlying tool, tuned with Gemini's specific habits, generic filler, in mind rather than a generic model's.

What if the image is also a link?

Describe where it goes or what it does, not just what it looks like.

Can I run a batch of images through it?

One at a time, within your 5 runs per 24 hours. No batch upload yet.

Will it give the same alt text twice?

Not reliably. Output can vary between runs on identical input.

Is there an API?

Not currently. Each image runs individually, within the daily allowance.

Does it work for non-English descriptions?

It's built and tested mainly for English. Other languages may produce usable results but aren't held to the same standard.

What happens after I use all 5 runs?

You'll see when the next run opens up. It resets automatically 24 hours after the run that used it.

Does it work on phones?

Yes, it works fully in any modern mobile browser, phone or tablet alike.

Does this guarantee accessibility compliance?

No. It can produce genuinely useful alt text from a good description, but compliance depends on the actual final result, not on a tool having generated it.

Get alt text that names something specific.

No upload needed. Describe the image, get alt text back. 5 free runs every 24 hours.

Generate my alt text