內容簡介
EffortLess Simple Image Optimiser 是一款專為 WordPress 設計的圖片優化外掛，能在上傳圖片時自動壓縮、調整大小及轉換格式，提升網站效能並節省儲存空間。
【主要功能】
• JPEG 壓縮：可調整品質，預設為 82
• PNG 壓縮：無損壓縮 PNG 檔案
• PNG 轉 JPEG：將不透明 PNG 轉換為 JPEG
• 圖片調整大小：維持長寬比縮小超過最大尺寸的圖片
• WebP 生成：可選擇生成 .webp 副檔案
• 零外部依賴：無需 API 金鑰或第三方服務
外掛標籤
開發者團隊
② 後台搜尋「EffortLess Simple Image Optimiser」→ 直接安裝（推薦）
原文外掛簡介
Effortless Simple Image Optimiser hooks directly into the WordPress Media Library upload pipeline and compresses, resizes and (optionally) converts images the moment they are uploaded — all using the built-in PHP GD extension.
Features
JPEG compression — re-encodes JPEGs at a configurable quality level (default: 82). GD strips EXIF metadata automatically, further reducing file size.
PNG compression — applies lossless GD compression to PNG files.
PNG → JPEG conversion — converts opaque (non-transparent) PNGs to JPEG for significant space savings. Transparent PNGs are always kept as PNG.
Image resizing — scales down images that exceed a configurable maximum width or height while maintaining the original aspect ratio.
WebP generation — optionally saves a .webp sidecar file alongside every optimised image (requires GD compiled with WebP support).
Zero external dependencies — no API keys, no third-party services, no composer packages.
Graceful degradation — if GD is not available the plugin skips processing and logs a notice; uploads are never blocked.
Settings
Navigate to Settings → Image Optimiser to configure:
Enable / disable automatic optimisation on upload
JPEG quality (1–100, default 82)
Enable PNG → JPEG conversion
Enable WebP sidecar generation + WebP quality
Enable / disable resizing
Maximum width in pixels (default 1920)
Maximum height in pixels (default 1920)
Requirements
PHP 7.4 or higher
PHP GD extension (enabled on virtually all shared hosting)
WordPress 5.9 or higher
