內容簡介
SiteByter Image Optimizer 是一款專為 WordPress 設計的圖片優化外掛，能夠壓縮媒體庫中的 JPG 和 PNG 圖片，提升網站速度，無需外部服務或 API 金鑰，確保圖片隱私。
【主要功能】
• JPG 和 PNG 圖片的有損壓縮，品質可調整
• 自動縮小超大上傳圖片至可配置的最大尺寸
• 批次優化整個媒體庫，實時進度條顯示
• 上傳時自動優化，確保新圖片即時壓縮
• 完整備份系統，壓縮前保留原始圖片
• 支援雲端儲存圖片的優化（Pro 版）
外掛標籤
開發者團隊
原文外掛簡介
SiteByter Image Optimizer compresses every JPG and PNG in your WordPress media library using the image editor already built into WordPress (GD or Imagick). No images leave your server. No API keys. No account. No per-image charges. No monthly quotas. Just faster pages.
Optimize Images Anywhere
Most image optimization plugins handle files on your local server. SiteByter goes further — with Pro, compress images stored on cloud storage too.
Local Server — Free, Unlimited
✅ JPG & PNG lossy compression at adjustable quality (1–100)
✅ Automatic downsizing of oversized uploads to configurable max dimensions
✅ Bulk optimize — process your entire media library with a real-time progress bar
✅ Auto-optimize on upload — every new image compressed the moment it enters WordPress
✅ Full backup system — originals preserved before compression, one-click restore
✅ Re-optimize all — restore originals and reprocess at new quality settings in one step
✅ Statistics dashboard — total images, optimized count, remaining, total space saved
✅ Batch size control — works on managed hosts (WP Engine, Flywheel, Kinsta, Cloudways)
Cloud Storage — Pro
🔒 Amazon S3
🔒 Cloudflare R2
🔒 DigitalOcean Spaces
🔒 Wasabi
🔒 Bunny Storage
🔒 Any S3-compatible provider (MinIO, Backblaze B2, etc.)
Advanced — Pro
🔒 WebP conversion and automatic browser-based serving
🔒 AVIF conversion for next-gen compression
🔒 Background processing for large libraries
🔒 Priority support
Why Local Optimization?
Local optimization means your images are compressed right on your server using WordPress’s built-in image editor. Benefits include:
Images never leave your server — complete privacy
No dependency on external services
No API key or account registration required
No per-image charges or monthly usage limits
Works offline and on any hosting environment
Why Cloud Optimization Matters
Modern WordPress sites increasingly store media on cloud storage — Amazon S3, Cloudflare R2, DigitalOcean Spaces — for performance, scalability, and cost. But most image optimization plugins can’t touch those files because they only process local images.
With SiteByter Pro, cloud-stored images are automatically downloaded, compressed on your server using the same high-quality local engine, and re-uploaded. No manual work. No separate tools. One plugin handles everything.
What Makes This Plugin Different?
This plugin processes images entirely on your server using WordPress’s built-in image editor (GD or Imagick). No images are uploaded to an external service, no API key is required, and there are no per-image limits or monthly quotas. With the Pro upgrade, the same local compression engine can also handle images stored on cloud storage providers.
How It Works
Install and activate — no signup, no API key, no configuration needed to start.
Set your quality — the slider lets you balance file size vs. visual quality. 78–85 is the sweet spot.
Click Bulk Optimize — processes your entire library with a progress bar and per-image log.
New uploads handled automatically — auto-optimize compresses every future upload instantly.
Changed your mind? — restore originals from backup and re-optimize at different settings.
Pro: Optimize Images on Cloud Storage
If your WordPress media lives on Amazon S3, Cloudflare R2, DigitalOcean Spaces, Wasabi, or Bunny Storage, Pro handles it automatically. Images are downloaded, compressed locally, and re-uploaded — all without manual intervention. Hand-rolled AWS Signature Version 4 signing in pure PHP with zero external dependencies.
Learn more about SiteByter Image Optimizer Pro →
