IMG Performer compared to AutoAlt and alttext.ai
AutoAlt and alttext.ai generate AI alt text as an external cloud service with its own quota. IMG Performer does it locally in WordPress via your own API key – plus image optimization and EU AI Act labeling in one plugin.
Short answer: Enfants IMG Performer generates AI alt text locally in WordPress via your own API key (recommended: Mistral, EU) – no credit quota, and no image ever leaves for a third-party server unless you choose the AI feature. AutoAlt and alttext.ai run as an external service with their own quota or subscription; image processing happens in their cloud. If you need an image optimizer anyway, IMG Performer gives you WebP/AVIF, alt text, and EU AI Act labeling in one local plugin.
Processing: local vs. cloud
IMG Performer runs entirely on your own WordPress server – image optimization, AI labeling, and, if enabled, alt text generation all start there. AutoAlt and alttext.ai are pure SaaS services: every image is uploaded to their cloud for processing, regardless of which WordPress plugin you otherwise use for image optimization.
Cost: your own API key instead of a quota
alttext.ai bills in credits: 25 free credits to start, then subscription tiers from $49/year for 100 images per month, $189/year for 500, $489/year for 2,000 – scaling further up to $2,199/year for 10,000 images per month. AutoAlt offers 50 images per month permanently free, then tiered monthly packages. IMG Performer has no quota of its own – you add your own API key for Mistral, OpenAI, or Anthropic and only pay your provider’s actual model costs, with no cap that eventually runs out.
GDPR: where the image data goes
With local processing, the question of a data processing agreement and third-country transfer for image optimization doesn’t even arise. alttext.ai is a US service with no stated EU server location. AutoAlt operates as webAufstieg GmbH in Aalen, Germany, with EU servers and offers a DPA – but the actual image recognition runs through OpenAI (GPT-4 Vision) and Google (Gemini), i.e. US models. With IMG Performer and an EU provider like Mistral, that last step also stays in Europe.
Feature scope
AutoAlt and alttext.ai are pure alt text tools, with no image optimization or AI labeling. IMG Performer additionally covers WebP conversion (Free) and AVIF (Pro) as well as machine-readable AI labeling under EU AI Act Art. 50 – automatic detection on upload, the label preserved across all image sizes, and a visible badge in the frontend.
At a glance
| AutoAlt | alttext.ai | IMG Performer | |
|---|---|---|---|
| Image processing | EU cloud (servers), US models | US cloud | local |
| AI model | OpenAI / Google | not disclosed | freely selectable, Mistral recommended |
| Free quota | 50 images/month, permanent | 25 credits, one-time | no quota – your own API key |
| Billing | tiered monthly packages | yearly/monthly subscription, tiered from $49/year | actual model cost of your own key |
| Also does image optimization (WebP/AVIF) | no | no | yes (WebP Free, AVIF Pro) |
| AI labeling (EU AI Act Art. 50) | no | no | yes |
Disclaimer
As of September 2026. Figures for AutoAlt and alttext.ai were checked against the respective providers’ websites before publication but may change; their current product and pricing pages are authoritative. This post is an overview, not legal advice.
Frequently asked questions
Which alt text tool uses a European AI model?
Only IMG Performer lets you freely choose the AI model via your own API key – with Mistral (France) the entire processing chain stays in the EU. AutoAlt uses OpenAI and Google, alttext.ai doesn't disclose its model.
Is there a European alternative to alttext.ai for alt text?
Yes. AutoAlt is a German company with EU servers, but relies on US models for the actual image recognition. IMG Performer processes image optimization locally and lets you choose between Mistral, OpenAI, and Anthropic for the alt text AI yourself.
Which WordPress plugin generates GDPR-compliant AI alt text?
IMG Performer is built as a WordPress plugin and processes images locally on your server – only for the optional AI alt text feature does the respective image go to the provider you chose. AutoAlt and alttext.ai are purely external services without their own image optimization.