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SPECIFICTION
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ATaaS

alttextservice.com

From $6.58/mo Free plan WebAPI
Visit alttextservice.com
Spec score 7.7 #16 of 27 in AI Alt Text Generators

What it is

ATaaS is an AI-powered REST API and web service that generates alt text for images. Requests can include page context, such as a product name, category, or description, to tailor text for e-commerce images. Supported formats are JPEG, PNG, WebP, AVIF, GIF, BMP, and TIFF. The homepage says the service supports more than 120 languages; plan details list 10 languages for Starter and 50+ for Pro. Reported average response time is 750ms, with most images under 800ms. Generated text is described as following WCAG 2.1 Success Criterion 1.1.1 and being optimized for screen readers. Images are processed in memory, then discarded without storage, logging, or sharing. The free plan provides 250 images monthly, REST API access, one API key, and community support. Starter costs $79 a year; Pro costs $249 a year. Exceeding a monthly limit returns HTTP 403 until credits reset on the first of the next month.

Spec sheet

Purpose
ATaaS is an AI-powered REST API that generates alt text for images.Read 8 Oct 2026 · alttextservice.com
Support
The Free plan includes community support, Starter includes email support, and Pro includes priority support.Read 8 Oct 2026 · alttextservice.com
Accessibility
The FAQ says generated alt text follows WCAG 2.1 Success Criterion 1.1.1 and is optimized for screen readers.Read 8 Oct 2026 · alttextservice.com
Billing
The FAQ says usage resets on the first of each month and users can upgrade, downgrade, or cancel from the dashboard.Read 8 Oct 2026 · alttextservice.com
Context
Requests can include page context to tailor alt text to the content.Read 8 Oct 2026 · alttextservice.com
Data handling
The FAQ says images are processed in memory, discarded immediately afterward, and not stored, logged, or shared.Read 8 Oct 2026 · alttextservice.com
Formats
The site lists JPEG, PNG, WebP, AVIF, GIF, BMP, and TIFF as supported image formats.Read 8 Oct 2026 · alttextservice.com
Languages
The homepage says the service supports more than 120 languages.Read 8 Oct 2026 · alttextservice.com
Quota behavior
The FAQ says exceeding the monthly image limit returns HTTP 403 until credits reset on the first of the next month.Read 8 Oct 2026 · alttextservice.com
Speed
The homepage reports an average response time of 750ms and says most images take under 800ms.Read 8 Oct 2026 · alttextservice.com
Usage alerts
The FAQ says users receive an email when fewer than 20% of their images remain.Read 8 Oct 2026 · alttextservice.com
Use case
The FAQ describes using page context such as a product name, category, or description to generate alt text for e-commerce product images.Read 8 Oct 2026 · alttextservice.com

Plans and prices

Free Free 250 images/month · REST API access · 1 API key · Community support Read 8 Oct 2026 · alttextservice.com
Starter $79 a year $108/yr Save $29; = $6.58/mo 1,000 images/month · Page context · 10 languages · 1 API key · Email support Read 8 Oct 2026 · alttextservice.com
Pro $249 a year $348/yr Save $99; = $20.75/mo 5,000 images/month · 60 req/min · 50+ languages · Bulk processing up to 50 images/call · Webhooks · 3 API keys · Priority support Read 8 Oct 2026 · alttextservice.com

Every ATaaS plan and price →

Strong points and limits

Strong points

  • Supports seven listed image formats
  • Offers page context for tailored descriptions
  • Processes images without storing or sharing them
  • Provides REST API access on the free plan
  • Includes bulk processing on Pro

Limits

  • Free plan is limited to 250 images monthly
  • Quota overages return HTTP 403
  • Plan language allowances differ
  • Paid plans have annual prices listed

Who it suits

It suits developers and site teams generating image descriptions through an API or web service, especially for e-commerce catalogs and accessibility workflows. Different plans cover free use, page context, larger quotas, and bulk processing.

Verdict

ATaaS provides image alt-text generation with API access, context input, accessibility guidance, and stated in-memory handling. Compare monthly quotas, language allowances, support levels, and annual prices with your expected image volume.

Where Specifiction places it

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