Compress images in Amazon S3 buckets using lossless and lossy optimization methods via the EWWW Image Optimizer.
As of April 2026, S3 Image Optimizer is a WordPress s3 plugin with 200 active installations and a 5/5 rating from 1 reviews. It has been downloaded 19K+ times in total. Requires WordPress 6.6+ and PHP 8.1+. Available on WordPress.org since 2021. Recently updated within the last 3 months. Top alternative: WP Offload Media Lite for Amazon S3….
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.
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| WordPress | 6.6+ requiredTested up to 6.9.4 |
| PHP | 8.1+ required |
| Dependencies | ewww-image-optimizer |
Release Date – March 4, 2026
…and 12 more changes
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