內容簡介
Enfants IMG Performer 外掛可自動檢測上傳的 AI 生成圖片，並依據歐盟 AI 法案第 50 條要求標記，並將圖片轉換為 WebP 和 AVIF 格式，確保網站圖片優化與合規性。
【主要功能】
• 自動將 JPEG 和 PNG 轉換為 WebP 格式
• 支援 AVIF 轉換（Pro 版）
• 批量優化整個媒體庫（Pro 版）
• 生成 WCAG 2.1 AA 合規的替代文字（Pro 版）
• 追蹤 CO₂ 節省數據
外掛標籤
開發者團隊
原文外掛簡介
Enfants IMG Performer detects AI-generated images on upload and applies a machine-readable and visible label as required by 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. The Pro version also generates WCAG 2.1 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. 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
From August 2, 2026, AI-generated images published on a website must carry machine-readable labeling under Article 50 of the EU AI Act. WordPress itself strips this 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 meets the technology-neutral requirements from 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 processes all images exclusively on your own server. No image data, IP addresses or personal information is transferred to external services. No API keys 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/
