ALTtext.org

ALTtext.org generates written descriptions of images to support accessibility. Its web tool accepts images by drag-and-drop, file selection, or clipboard paste, and can process one image or several. A browser extension adds a generate control to ALT text fields on Bluesky, X/Twitter, Facebook, Instagram, LinkedIn, Threads, Tumblr, Pinterest, Mastodon, and Pixelfed; on other sites, users can start from an image’s right-click menu. The service is available on the web, in browser extensions, and through Mac and iOS apps, including access through the Apple share sheet. Generated descriptions are focused and announced for screen readers. The site says it supports VoiceOver, NVDA, JAWS, and keyboard-only use, and builds to WCAG 2.2. ALTtext says images are downscaled in the browser and sent to Google’s Gemini API, not stored on its servers. There is no account requirement or advertising. The free plan allows 20 ALT texts per day; paid plans include unlimited personal use for a one-time $9.99 or team and business options from $19.99 per month.

ALTtext.org offers several routes for generating image descriptions, with accessibility support and a free daily allowance. Consider its stated image processing and the limits of each plan when choosing it.

It suits people who need image descriptions for accessibility in publishing or social workflows. The browser, Apple app, and API options address different ways of creating or using ALT text.

ALTtext.org creates written image descriptions for accessibility across the web, social platforms, and Apple devices. It suits people who need alt text in different publishing contexts, from occasional posts to bulk and API work. Its broad access and screen reader support make it a flexible option, though the free plan’s daily limit and use of Google’s Gemini API deserve consideration.

Overview

ALTtext generates descriptions in concise and detailed styles. Its web tool accepts JPEG and PNG images by drag and drop, file selection, or clipboard paste, and handles one image or many. That range of input methods makes it practical for both a single post and a batch of images.

The browser extension adds a generate button to alt text fields on Bluesky, X/Twitter, Facebook, Instagram, LinkedIn, Threads, Tumblr, Pinterest, Mastodon, and Pixelfed. On other websites, users can generate a description from an image’s right-click menu. This is useful for people who publish across several services, while those who only need descriptions for a single workflow may not need such wide coverage.

ALTtext says generated results remain in the current browser. Its privacy policy says images are downscaled in the browser, sent to Google’s Gemini API for description, and not stored on ALTtext’s servers. The service has no accounts, does not sell data, and says it does not use ads or cross-site tracking. Google, Stripe, Netlify, and Resend receive or store data for generation, payments, hosting and records, or license emails. Usage counts reset daily; images are not retained, while license records are kept for the active license and a reasonable period afterward. Those practices may appeal to users who want no account or ad tracking, but anyone seeking image processing without a third-party API should look elsewhere.

Key features

Screen reader support is a particular strength: ALTtext says it supports VoiceOver, NVDA, and JAWS as well as keyboard-only use, and builds to WCAG 2.2. Generated descriptions are announced and focused so screen reader users can hear them immediately. The tool also supports bulk processing, API access, and publishing workflows, giving teams options beyond generating one description at a time.

The Mac and iOS app brings the tool to desktop and the share sheet, and the extension is available for Chrome, Brave, Edge, other Chromium browsers, Firefox, and Safari on macOS and iOS. That coverage suits users who switch between browsers and Apple devices, though platform choice matters less to anyone who only needs the web generator.

Pricing

The Free plan costs nothing, billed forever, and allows 20 ALT texts per day across the website, Apple apps, and browser extensions. It includes concise and detailed styles and requires no account. This is a useful way to cover light, daily use, but the cap makes it a poor fit for regular high-volume publishing.

Individual costs $9.99, paid once, billed one-time, for unlimited ALT text for personal, non-commercial use. It removes the daily quota without a recurring charge, but its license excludes commercial use, so it is not a substitute for a team plan at work.

Team costs $19.99 a month, billed per month, and includes up to five seats, a commercial-use license, and priority support. It fits small groups that need shared commercial coverage; larger teams may need the Business / API plan, which costs $99 a month, billed per month. That plan includes API access, a generous quota, more seats, and bulk and ADA / EAA workflows, making it the strongest fit for larger or workflow-heavy operations, at a substantially higher monthly price.

Platforms

ALTtext is available as a browser extension, an iOS app, a macOS app, and a web tool. The web generator accepts JPEG and PNG images; the extension supports Chrome, Brave, Edge, other Chromium browsers, Firefox, and Safari on macOS and iOS.

Who it's for

ALTtext is best suited to people who need to write image descriptions across multiple publishing services and want screen reader support built into the workflow. Individuals can use the free plan for modest daily needs or choose the one-time Individual license for unlimited personal use. Small commercial teams get up to five seats, while organizations needing API access or bulk ADA / EAA workflows have a higher-priced business option.

Pros and cons

• Pros: Browser, web, Mac, and iOS access lets users generate descriptions in several publishing contexts.
• Pros: VoiceOver, NVDA, JAWS, keyboard-only use, and immediate screen reader announcements support accessible operation.
• Pros: The free plan covers 20 descriptions per day without an account, and the Individual plan offers unlimited personal use for a one-time payment.
• Cons: The free daily cap can constrain frequent publishers, and Individual’s non-commercial license rules it out for work use.
• Cons: Image descriptions rely on Google’s Gemini API, so users avoiding third-party image processing may prefer another tool.
• Cons: Business / API costs $99 a month, putting its bulk and API features beyond the needs of casual users.

Alternatives

AI Alt Text Generators is the broader category to explore when comparing tools for this kind of work.

Seeing AI is a free app for Android and iOS, making it an option for readers who want a mobile app without a paid plan. AI Alt Text Builder offers a free tier with 25 tokens and unlimited single-image generations when users bring their own OpenAI API key, so it may suit someone who prefers that setup. Alt Text Pro has web and API access with 15 credits and 150 signup bonus credits that never expire on its free plan, a different credit-based option. AltTextLab provides 25 free credits a month, unlimited websites, 20+ integrations, API access, and 130+ languages for readers prioritizing integrations and language coverage. AutoAlt.ai offers 50 free credits per month without a credit card, with a paid Starter plan priced at $4.49 a month for 100 images, which may appeal to users comparing monthly image allowances. Alt Audit has a Starter plan at $5 a month with 800 credits, bulk processing, priority email support, and exports for readers focused on those capabilities. Altagonist offers 50 free credits per month, up to 50 alt tags, and all 70 languages for users comparing language coverage. AltGen includes 26 free credits per month alongside bulk upload, CSV import, page scraping, API access, webhooks, and an image library, making it another option for readers weighing workflow tools against ALTtext’s cross-platform access.

Verdict

ALTtext.org is a strong choice for individuals and small teams that need accessible image descriptions in browsers, social publishing fields, and Apple workflows. Its no-account free tier, immediate screen reader announcements, and range of access points are compelling; the daily cap limits heavier use, and commercial users should budget for a paid license. Look elsewhere if avoiding Google’s Gemini API is a priority.