# ALTtext — Alt Text Generator

> Generate accessible ALT text for any image — right-click, toolbar, or Bluesky X, or Facebook auto-fill.

Canonical page: [https://chrome-stats.com/d/alttext-alt-text-generator](https://chrome-stats.com/d/alttext-alt-text-generator)

## Overview

- **ID:** `alttext-alt-text-generator`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Todd Lambert
- **Category:** feeds-news-blogging,photos-music-videos
- **Daily users:** 3
- **Weekly downloads:** 1
- **Version:** 1.2.24
- **Last updated:** 2026-07-18
- **First published:** 2026-07-15
- **Size:** 39 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/alttext-alt-text-generator/)
- **Website:** [https://alttext.org](https://alttext.org/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/alttext-alt-text-generator/privacy/](https://addons.mozilla.org/firefox/addon/alttext-alt-text-generator/privacy/)

## Description

ALT text with one click, right where you post.

ALTtext puts a "Generate with ALTtext" button directly inside the ALT text field on:

• Bluesky

• X / Twitter

• Facebook

Attach an image, open the platform's ALT text field, and the button is already there. One click writes an accurate, accessible description in place — no copying, no switching tabs, no excuses. Support for Instagram, Mastodon, Threads, and more is rolling out.

WORKS ON EVERY OTHER SITE TOO
Right-click any image on any page → "Generate ALT text with ALTtext." The description appears instantly, ready to copy.

BUILT FOR BLIND AND LOW-VISION USERS AS WELL
ALTtext isn't just for people adding descriptions — it's for people who need them. Meet an uncaptioned image and generate the description yourself: results are announced to your screen reader (VoiceOver, NVDA, JAWS) and receive focus, so you hear the description immediately instead of depending on whoever posted it.

WHY ALT TEXT MATTERS
The WHO estimates 2.2 billion people live with vision impairment. For millions using screen readers, ALT text IS the image — and most images on the web still have none. ALTtext removes the last excuse.

FREE TO USE
The core generator is free every day, no account needed. ALTtext Pro lifts the limits for people who post at volume — and keeps the free tier running for the next person.

PRIVACY
Images you describe are sent to the ALTtext engine only to generate the description. Nothing is stored, tracked, or shared. Your history stays in your browser.

From <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/60d8aebe54e7123bae5111330e34a8ccec4374089f17e4e5564ecfb5e6bebf3e/http%3A//alttext.org" rel="nofollow">alttext.org</a> — a public resource for image accessibility.

## Rankings

- #55,084 — Overall
- #198 — generator

## Permissions and access

### Permissions

- `contextMenus`
- `scripting`
- `storage`

### Host permissions

- `https://alttext.org/*`
- `<all_urls>`

### Content script matches

- `bsky.app`
- `x.com`
- `twitter.com`
- `mastodon.social`
- `mastodon.online`
- `mas.to`
- `mstdn.social`
- `fosstodon.org`
- `hachyderm.io`
- `infosec.exchange`
- `mastodon.art`
- `www.threads.com`
- `www.threads.net`
- `www.tumblr.com`
- `pixelfed.social`
- `*`
- `www.facebook.com`
- `www.instagram.com`
- `*.linkedin.com`
- `www.pinterest.com`

## Safety

- **Risk impact:** Very high risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

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- [AutoAlt - AI Alt Text Generator](https://chrome-stats.com/d/autoalt-ai-alt-text-generator) — 1 users
- [Bluesky Alt Text Generator](https://chrome-stats.com/d/bluesky-alt-text-generator) — 18 users, 4.00 / 5
- [WriteAlt - AI Alt Text Generator](https://chrome-stats.com/d/writealt-ai-alt-text-generator)
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- [AutoAlt - Alt Text for bsky.app](https://chrome-stats.com/d/autoalt-alt-text-for-bsky-app) — 2 users
- [AltTextGeneratorAI](https://chrome-stats.com/d/alttextgeneratorai) — 2 users
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Source: [Chrome-Stats](https://chrome-stats.com/d/alttext-alt-text-generator)