WPThumbs
Themes Plugins By purpose By industry Best-of lists Fix it guides
Free Plugin by Shane Bishop v8.7.6

EWWW Image Optimizer

Comprehensive image optimization with WebP, AVIF, Lazy Load, and more. Optimize images automatically for Faster Sites and Happy Visitors.

EWWW Image Optimizer

The facts

Rating
4.8★ from 1,838
Active installs
1M+
Price
Free
Last updated
20 Aug 2026
Added
Jun 2012
Requires WP
6.8
Tested up to
WP 7.1
Requires PHP
7.4
Downloads
49,324,596

Our analysis

AI-assisted

EWWW Image Optimizer is a WordPress plugin designed for image optimization to enhance website performance. It allows you to compress images of any size, convert them to WebP format, and resize images upon upload or in bulk. The plugin is suitable for anyone looking to improve their website's speed and SEO by optimising images effectively.

The plugin offers features such as lossless image optimisation for various formats, lazy loading, and the ability to identify improperly scaled images. It is particularly useful for website owners who want to ensure their images are optimally sized and formatted to enhance user experience and reduce bounce rates.

Best for: This plugin suits website owners looking to optimise images for better performance and SEO.

What it does well

  • Unlimited image optimization for any size
  • Lossless optimization for JPG, PNG, GIF, and SVG
  • WebP conversion supported
  • Local image backups available
  • Free email support provided

Where it falls short

  • Requires PHP exec() function and compatible server
  • Some advanced features are only available in the premium version

Verdict

EWWW Image Optimizer provides a robust solution for image optimisation, making it a valuable tool for enhancing website speed and user experience.

From the developer

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

Are you frustrated by a slow website? Do over-sized images make you say “ewww”… Image optimization with EWWW Image Optimizer helps you make your site faster, improve your bounce rate, and boost your SEO. But most importantly, make your visitors happier so they keep coming back for more.

Why use EWWW Image Optimizer?

Get all this for free:

  • Unlimited image optimization to compress images of any size
  • Local image optimization mode compatible with most web hosts
  • Lossless JPG, PNG, GIF, and SVG image optimization (8% average savings)
  • WebP conversion compatible with all web hosts (60% average savings)
  • Optimize images from any plugin
  • Image Detective to help you identify improperly scaled images and better optimize LCP images
  • Resize images at upload or in bulk
  • Lazy Load with auto-scaling for responsive images–uses properly-sized placeholders to prevent layout shift (CLS)
  • Sharpen thumbnail images for better quality
  • Adjust JPG and WebP quality (AVIF quality configurable in premium)
  • Control creation and optimization of individual WordPress thumbnails
  • Convert images to the best format (GIF to PNG, PNG to JPG or vice versa)
  • Local image backups
  • Preserve GIF animations in thumbnails
  • Free email support

EWWW Image Optimizer is the only plugin that lets you optimize images using tools on your own web server (jpegtran, optipng, pngout, pngquant, gifsicle, cwebp). This requires the PHP exec() function and a compatible Linux, Windows, MacOS, or FreeBSD web server. If your web server is not compatible, we offer unlimited lossless JPG image optimization and WebP conversion via our Compress API for free.

Upgrade to Premium for:

  • 5x premium image optimization
  • PDF optimization
  • Automatic scaling for all images, even those in external CSS
  • One-click WebP & AVIF conversion and delivery
  • Enhanced responsive images that use correct dimensions for all devices
  • WebP image optimization
  • Deliver High-DPI images to devices with 2x and 3x screens (retina)
  • Watermark images
  • CDN delivery for images, CSS, JS, and fonts with custom domain name option
  • 30-day cloud-based backups
  • Premium support

Premium plans include SWIS Performance plugin with:

  • Page caching
  • Enable browser caching with long cache lifetimes
  • Defer JS/CSS to eliminate render blocking requests
  • Minify JS/CSS
  • Critical CSS generation to prevent layout shifting (CLS)
  • Optimize font display/self-host Google fonts
  • Preload assets like fonts and LCP images
  • Reduce unused JS/CSS
  • Manage speculative loading

Automatic Everything

Optimize images on your entire site with a single click. With Easy IO CDN, images are automatically compressed, scaled to fit the page and device size, lazy loaded, and converted to next-gen WebP and AVIF formats.

Support

We provide free one-on-one email support to everyone.
Do you have an idea to make EWWW Image Optimizer even better? Share it and vote on future features!

Found a bug? Report the issue on GitHub, and we’ll get it fixed!

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.

Bulk Optimize

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)
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)
Autoptimize

Autoptimize speeds up your website by optimizing JS, CSS, images (incl. lazy-load), HTML and Google Fonts, asy...

Free 800k+ installs 4.7★ (1,428)