ALTtext.org

ALTtext.org is an image-description tool for people who want to add alt text across social platforms, Apple devices, and the web. It suits individuals and teams whose work ranges from occasional posts to bulk or API workflows. Its broad access options are a strength, while the free plan’s daily cap and processing through Google’s Gemini API merit consideration.

Overview

ALTtext generates written image descriptions for accessibility. Its web generator accepts JPEG and PNG images by drag and drop, file selection, or clipboard paste, and can handle one image or many. Concise and detailed styles let users choose between shorter descriptions and more detail.

The browser extension adds a generation button to alt-text fields on Bluesky, X/Twitter, Facebook, Instagram, LinkedIn, Threads, Tumblr, Pinterest, Mastodon, and Pixelfed. On other websites, users can invoke generation from an image’s right-click menu. This makes the extension useful for posting across supported services without limiting image generation to those integrations.

ALTtext says results are saved only in the current browser, and images are downscaled in the browser before being sent to Google’s Gemini API for description; ALTtext says it does not store the images on its servers. It has no accounts, does not sell data, and says it uses neither advertising nor cross-site tracking. Google, Stripe, Netlify, and Resend receive or store data for image generation, payments, hosting and records, or license emails. Usage counts reset daily; images are not retained, while license records remain active and for a reasonable period afterward. Readers who need to avoid sending images to an external AI service should look elsewhere.

Key features

The combination of a multi-image web generator, social-platform buttons, and right-click generation covers both one-off descriptions and regular publishing workflows. Bulk processing and API access extend the product to larger operations, though API access is reserved for the Business / API plan.

Accessibility is part of the product’s stated design: ALTtext says it supports VoiceOver, NVDA, JAWS, and keyboard-only use, and builds to WCAG 2.2. Generated descriptions are focused and announced so screen-reader users can hear them immediately. That behavior is particularly relevant for people generating alt text with assistive technology.

Pricing

The free plan costs nothing, billed forever. It allows 20 ALT texts per day across the website, Apple apps, and browser extensions, includes concise and detailed styles, and requires no account. That is a practical starting point for occasional use, but the daily ceiling can constrain regular publishing.

Individual costs $9.99, paid once, billed one-time, for unlimited ALT text and personal, non-commercial use. It removes the free plan’s daily cap, but the license excludes commercial use; it is not the right upgrade for work done on behalf of a business.

Team costs $19.99 a month, billed per month, and includes up to 5 seats, a commercial-use license, and priority support. It is the clearer fit for a small commercial team. Business / API costs $99 a month, billed per month, and adds API access, a generous quota, more seats, bulk processing, and ADA / EAA workflows. Organizations needing custom scale beyond that plan can seek custom pricing.

Platforms

ALTtext is available on the web, as a browser extension, and through Mac and iOS apps. The extension supports Chrome, Brave, Edge, other Chromium browsers, Firefox, and Safari on macOS and iOS. ALTtext says its Apple apps bring the tool to desktop and the share sheet, making them useful for generating descriptions beyond browser-based posting.

Who it's for

ALTtext fits individuals who need accessible image descriptions across social networks and devices, especially if 20 daily generations are enough or a one-time personal license suits their use. Teams that need commercial rights, multiple seats, or priority support have a defined monthly option; businesses with bulk, API, or ADA / EAA workflows have a higher-tier path. It is a poor fit for anyone unwilling to send images to Google’s Gemini API.

Pros and cons

• Pros: The extension places generation directly in alt-text fields on ten named social platforms, with a right-click option for other sites.
• Pros: Free access spans the website, Apple apps, and extensions, with no account requirement and both concise and detailed styles.
• Pros: Screen-reader announcements, keyboard-only support, and stated WCAG 2.2 alignment address accessibility in the tool itself.
• Cons: The free plan is limited to 20 ALT texts per day, so sustained daily use may require a paid plan.
• Cons: Images are sent to Google’s Gemini API for descriptions, which may rule out the service for sensitive images or stricter data-handling needs.
• Cons: The one-time Individual license is non-commercial; commercial users must pay monthly for Team or Business / API.

Alternatives

For a broader directory of options, see AI Alt Text Generators.

• Alt Text Pro is an alternative for web and API users who want a WordPress plugin and a free monthly plan with 15 credits plus 150 signup bonus credits that never expire.
• Altagonist may suit users seeking a Windows app and a free monthly allowance of 50 credits, with support for 70 languages and all quality tiers.
• AI Alt Text Builder is a web alternative with a free 25-token plan; users with their own OpenAI API key can generate single-image descriptions without a token limit.
• Alt Audit is worth considering for web or API users who want a paid Starter plan with 800 monthly credits, bulk processing, priority email support, and exports.
• AltTextLab offers a browser extension, API, and web access, with a free plan that includes 25 monthly credits, unlimited websites, and 20+ integrations.
• AutoAlt.ai has web, extension, and API access, plus a free 50-credit monthly plan and a free trial.
• AltGen is a web and API option whose free plan includes 26 credits per month, bulk upload, CSV import, page scraping, webhooks, and an image library.
• AltText.io is another web, extension, and API alternative.

Verdict

Choose ALTtext.org if you want image descriptions across social platforms and Apple devices, with accessible controls and a route from personal use to team or API workflows. Its strongest case is the breadth of ways to generate and publish alt text. Look elsewhere if the 20-per-day free cap is too restrictive or sending images to Gemini does not fit your privacy requirements.