內容簡介
WebberZone Image Optimizer 是一款免費的 WebP 和 AVIF 轉換器，專為 WordPress 設計。它能自動將媒體庫中的 JPEG、PNG 和 GIF 圖片轉換為 WebP 和 AVIF 格式，並優化新上傳的圖片，提升網站載入速度及性能。
【主要功能】
• 自動轉換 JPEG、PNG 和 GIF 圖片
• 支援 WebP 和 AVIF 格式
• 無需外部服務或 API 金鑰
• 圖片壓縮可減少 40-60% 大小
• 兼容大多數主機環境
• 可選擇替換原始檔案擴展名
外掛標籤
開發者團隊
② 後台搜尋「WebberZone Image Optimizer – WebP & AVIF Converter, Compress Images」→ 直接安裝（推薦）
原文外掛簡介
WebberZone Image Optimizer is a free WebP converter and AVIF converter for WordPress. It converts the JPEG, PNG and GIF images already in your media library to WebP and AVIF, optimizes new uploads automatically, and serves each visitor the smallest file their browser can read. Images are typically 40–60% smaller with no visible difference, so pages load faster and score better on PageSpeed Insights and Core Web Vitals.
Everything happens on your own server. Your images are never uploaded anywhere. The plugin makes no outbound network requests of any kind — there is no external service, no API key, no monthly image quota, no account to create and nothing that can stop working because a company shut down or changed its pricing. AVIF is not a paid upgrade: every feature is free.
What your server needs
Almost certainly nothing you do not already have. WordPress cannot crop or resize an uploaded image without either the Imagick or the GD extension, so every working WordPress install already has one of them, and both have been able to write WebP for years.
WebP works on virtually any current host. GD has supported it since PHP 5.5, Imagick since well before that.
AVIF is newer and less universal. It needs either PHP 8.1+ with GD built against libavif, or Imagick with an AVIF delegate. Plenty of hosts have it; plenty do not yet.
You do not have to guess. The plugin tests your server by actually encoding a small image with each backend at activation, rather than trusting what the extension claims to support, and the settings screen shows you exactly which formats came back working. If AVIF is unavailable the option is simply marked as such and WebP carries on normally.
Compress and resize JPEG and PNG originals
By default, each optimized copy is written alongside the original with the new extension appended, so photo.jpg gains photo.jpg.webp, and the original is left unchanged. The File naming setting can switch this to replacing the extension instead (photo.webp) — see the settings screen for the trade-off before turning it on.
You can also compress the original JPEG and PNG files themselves. JPEG compression uses Imagick or GD at the quality you choose; PNG compression uses a local oxipng or pngquant tool when your server has one. A maximum image dimension resizes oversized uploads and, optionally, existing originals. Every change is backed up first, and Restore originals reverses it. Both features are off by default. Deactivation stops optimized delivery but does not restore compressed originals.
Serve WebP and AVIF with the picture element, safe behind caches and CDNs
Images are wrapped in a
Responsive images are handled properly. Each format’s remains as the fallback.
For images referenced from a stylesheet, where the browser is never offered a choice, the Delivery tab generates ready-to-paste Apache and nginx rules, complete with the Vary: Accept header those rules require.
Bulk optimize your existing media library
The bulk screen works through a database-backed queue one batch at a time. Close the tab and nothing is lost; a background worker carries on, and reopening the screen resumes exactly where it stopped. Failures are retried a few times and then listed with the reason.
Features
Convert JPEG, PNG and GIF to WebP and AVIF, together or separately (AVIF where the server supports it)
Bulk conversion of an existing media library, resumable and interruptible
Automatic conversion of new uploads
Optional JPEG and PNG compression of the originals, with backups and Restore originals
Maximum image dimension to resize oversized uploads
Reuses WebP and AVIF files already created by another image optimizer instead of converting again
Lazy conversion: an image seen on the front end but not yet converted is queued, never encoded during the page render
Per-format quality, encoder effort, and lossless mode for PNG sources
A lossy optimized copy that misses the minimum saving is retried once at a lower quality before being discarded, per file
Metadata stripped from the copies while the color profile is kept, so colors do not shift
Animated GIFs keep their animation when ImageMagick is available
Memory guard that skips an image rather than crashing a batch
Per-image status and actions in the Media library, with a filter for optimized, not-yet-optimized, skipped and failed images
Bulk Optimize warns when images are queued but the background worker has stopped running, and gives the commands that recover it
Multisite aware: per-site queues, tables created for new sites automatically
WP-CLI: wp wzio status, convert, queue, run, clean
Filters throughout for developers
