WPThumbs
Themes Plugins By purpose By industry Best-of lists Fix it guides
Free Plugin by Shane Bishop v3.0.1

S3 Image Optimizer

Compress images in Amazon S3 buckets using lossless and lossy optimization methods via the EWWW Image Optimizer.

S3 Image Optimizer

The facts

Rating
5★ from 1
Active installs
200+
Price
Free
Last updated
30 Jul 2026
Added
Jun 2021
Requires WP
6.7
Tested up to
WP 7.0.4
Requires PHP
8.1
Downloads
21,195

Our analysis

AI-assisted

S3 Image Optimizer is a WordPress plugin designed to optimize images stored in Amazon S3 buckets. It allows you to manage the optimization of images across multiple buckets, making it suitable for users with many sites or shared storage needs.

The plugin integrates with EWWW Image Optimizer and provides a web-based bulk optimization process, as well as a WP-CLI interface for handling large amounts of images. It is compatible with any S3-compatible storage service, which broadens its usability for various hosting environments.

Best for: This plugin is best for users managing multiple sites or large image libraries on S3 storage.

What it does well

  • Optimizes images in multiple Amazon S3 buckets
  • Integrates with EWWW Image Optimizer
  • Supports S3-compatible services like Linode and Backblaze B2
  • Offers a web-based bulk optimization process
  • Includes a WP-CLI interface for large-scale operations

Where it falls short

  • Limited information on specific features or user experience

Verdict

S3 Image Optimizer provides a focused solution for optimizing images in Amazon S3, particularly for users with complex storage needs. It may be useful for those looking to streamline image management across multiple sites.

From the developer

Shane Bishop's own description of S3 Image Optimizer, lightly tidied.

The S3 Image Optimizer will optimize all your images in 1-1,000+ Amazon S3 buckets using the EWWW Image Optimizer. Since EWWW IO integrates directly with plugins like WP Offload Media, S3 IO is generally for folks who use a solution other than WP Offload Media to put their images on S3. But, if you have 20 sites sharing an S3 bucket, or have lots of buckets, and you would want to optimize them all from one place instead of 20 different sites, this is the plugin for you.

S3 IO features a web-based bulk optimization process, and a WP-CLI interface for massive buckets. S3 IO works with any S3-compatible storage service including Linode, Backblaze B2 and Digital Ocean Spaces.

You may report security issues through our Patchstack Vulnerability Disclosure Program. The Patchstack team helps validate, triage and handle any security vulnerabilities. Report a security vulnerability.

Credits

Written by Shane Bishop with special thanks to my Lord and Savior.

Read the full description on the official page →

Tagged as

Alternatives

Other plugins for making sites fast.

WP-Optimize

Get caching and more with this powerful cache plugin. Cache, optimize images, clean your database and minify f...

Free 1M+ installs 4.8★ (2,606)
LiteSpeed Cache

All-in-one unbeatable acceleration & PageSpeed improvement: caching, image/CSS/JS optimization...

Free 7M+ installs 4.8★ (2,764)
EWWW Image Optimizer

Comprehensive image optimization with WebP, AVIF, Lazy Load, and more. Optimize images automatically for Faste...

Free 1M+ installs 4.8★ (1,838)
Under Construction

Easy to use Under Construction Page & Coming Soon Page. Enable Under Construction Mode in seconds & sh...

Free 600k+ installs 4.8★ (1,285)
Smush

Smush

93

Compress and optimize images, enable lazy load, serve WebP & AVIF, and speed up your site with a global im...

Free 1M+ installs 4.8★ (6,051)
Converter for Media

Speed up your website by using our WebP & AVIF Converter. Optimize images and serve WebP and AVIF images i...

Free 500k+ installs 4.9★ (1,097)