About this plugin
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
)
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 →