About this plugin
Enfants IMG Performer detects AI-generated images on upload and applies a machine-readable marker and a visible label to support the disclosure duties under Article 50 of the EU AI Act. At the same time it converts every upload to WebP (free) and AVIF (Pro) locally on your own server – no cloud service, no account, no limit. 1 AA alt texts for the European Accessibility Act using your own AI API key.
The separately available Enfants IMG Performer PRO plugin unlocks AVIF conversion, bulk optimization and AI-powered alt text generation.
Why IMG Performer?
Most image optimization plugins send your images to a third-party cloud service for processing – often with monthly quotas and accounts required. IMG Performer is different: it uses PHP’s built-in GD library (with Imagick as fallback) to convert images locally. For conversion and AI image labeling, your images never leave your server.
No account needed. No monthly limit.
What it does
- Converts JPEG and PNG uploads to WebP automatically – unlimited, free
- Converts all registered image sizes (thumbnail, medium, large, custom)
- Rewrites src, srcset, href (lightbox) and lazy-load attributes in the frontend
- Deletes WebP files when the original image is deleted
- Logs all conversions for transparency
- Configurable quality setting (1–100, default 85)
- CO₂ savings tracker with optional anonymous global statistics
- Detects AI-generated images on upload and labels them for EU AI Act Art. 50 compliance – see below
The separately available Enfants IMG Performer PRO plugin (installed alongside this plugin) adds:
- AVIF conversion – up to 50% smaller than WebP
- Bulk Converter – convert your entire media library in one click
- AI Alt Text Generator – WCAG-compliant alt texts via Mistral, Claude, OpenAI, or any OpenAI-compatible endpoint (self-hosted Ollama/LocalAI/vLLM, or other providers)
- AI labeling in Alt-Text – optionally append a disclosure note to the alt text of AI-classified images
EU AI Act Art. 50: AI image labeling
Article 50 of the EU AI Act applies since August 2, 2026. Providers of AI image generators must mark their output in a machine-readable way, and website operators must disclose deepfakes in a way people can perceive. WordPress itself strips the machine-readable provenance information the moment it generates thumbnails on upload ( WordPress/ai issue #421, unresolved) – IMG Performer works around that:
- Detects AI provenance in newly uploaded images (based on embedded metadata such as C2PA manifests, where present)
- Writes its own hosting-independent labeling into the original and every generated image size – no Imagick required
- Shows a visible “AI-generated” badge on the frontend, toggleable
- Lets you manually correct the automatic classification directly in the Media Library
- Shows an “AI Labeling” status column and Alt-Text presence indicator in the Media Library list view, with a “Needs review” filter for unclassified images
- Only applies to new uploads – your existing media library is not scanned or changed retroactively
The separately available PRO plugin additionally lets you append a disclosure note to the image’s alt text itself when it’s classified as AI-generated (optional, per image).
This labeling is based on the IPTC “Digital Source Type” standard field and follows the technology-neutral approach of the EU AI Act Code of Practice. It is not a cryptographically signed C2PA manifest – producing one would require certification through the official C2PA Conformance Programme, a separate process this plugin does not perform.
GDPR / DSGVO
Enfants IMG Performer converts images to WebP and detects and labels AI-generated images exclusively on your own server. This plugin does not transfer image data, IP addresses or personal information to external services, and it needs no API key.
The optional AI alt text feature of the separate PRO plugin works differently: the image is sent to the AI provider whose API key you enter (recommended: Mistral, an EU company with EU servers). A data processing agreement (DPA) with that provider is required.
The only optional external connection is the anonymous CO₂ statistics feature (opt-in, disabled by default). When enabled, it sends only total bytes saved to our EU-based server – no IP address, no domain, no personal data.
Requirements
- WordPress 6.0 or higher
- PHP 7.4 or higher
- GD extension with WebP support ( imagewebp )
- AVIF (PRO only): PHP 8.1 or higher with AVIF support in GD, or Imagick with AVIF – otherwise WebP is delivered
External Services
This plugin can optionally send anonymous usage data to an external service operated by Enfants Terribles digital GmbH.
CO₂ Statistics (opt-in, disabled by default)
When you enable “Global sustainability stats” in the plugin settings, the plugin sends the following data once per day to our EU-based server:
- An anonymous random site ID (UUID v4, generated locally, no personal data)
- Total bytes saved through WebP conversion
No images, no IP addresses, no domain names and no personal data are transmitted. The anonymous site ID cannot be traced back to you or your website.
This data is used solely to display a global CO₂ savings counter on the plugin website.
- Service: Enfants Terribles digital GmbH (EU-based server, Netcup, Germany)
- Endpoint: https://tools.enfants.de/imp-stats/
- Privacy Policy: https://img-performer.enfants.de/datenschutz/
- Terms of Use: https://img-performer.enfants.de/nutzungsbedingungen/