10 Best Kraken.io Image Optimizer Alternatives in 2026
Updated September 7, 2026 · Ranked by how closely each plugin matches, from WordPress.org data · How this works
Kraken.io Image Optimizer has 10,000+ active installs on WordPress.org. These 10 plugins share its category or its tags on WordPress.org, are actively maintained, and each has at least 100 active installs. They are ordered by how closely they match, not by our opinion.
The 10 closest alternatives to Kraken.io Image Optimizer
- 1
Robin Image Optimizer
Closest matchRobin Image Optimizer – Unlimited Image Optimization, WebP & AVIF
4.4 (129) 100,000+ active installsUnlimited automatic image optimization for WordPress. Compress images, convert to WebP, and improve site speed without losing image quality.
Shares the AVIF, compress images, image optimization tags on WordPress.org. About 10 times the installs, rated 4.4 against 4.5, last updated 18 days ago.
- 2
Smush
Paid version availableSmush – Image Optimization, Compression, Lazy Load, WebP & CDN
4.8 (6,051) 1 million+ active installsCompress and optimize images, enable lazy load, serve WebP & AVIF, and speed up your site with a global image CDN.
Shares the compress images, convert webp, image optimization tags on WordPress.org. About 100 times the installs, rated 4.8 against 4.5, last updated 14 days ago.
- 3
ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF
4.5 (819) 300,000+ active installsOptimize images & PDFs smartly. Create and compress next-gen WebP and AVIF formats. Smart crop and resize.
Shares the compress images, convert webp, image optimization tags on WordPress.org. About 30 times the installs, last updated 18 days ago.
- 4
Imagify Image Optimization: Optimize Images | Compress & Convert to WebP/AVIF
4.3 (1,653) 1 million+ active installsImage optimization in 1‑click: compress, resize & convert to WebP/AVIF – free up to 20MB/month. Enjoy the easiest WordPress image optimizer to set up.
Shares the compress images, convert webp, image optimization tags on WordPress.org. About 100 times the installs, rated 4.3 against 4.5, last updated 19 days ago.
- 5
Converter for Media – Optimize images | Convert WebP & AVIF
4.9 (1,099) 500,000+ active installsSpeed up your website by using our WebP & AVIF Converter. Optimize images and serve WebP and AVIF images instead of standard formats!
Shares the compress images, convert webp, image optimization tags on WordPress.org. About 50 times the installs, rated 4.9 against 4.5, last updated 19 days ago.
- 6
Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization
4.7 (638) 200,000+ active installsAutomatically optimize images with bulk compression, lazy loading, WebP/AVIF conversion & CloudFront image CDN. Boost Core Web Vitals & conversions.
Shares the AVIF, compress images, image optimization tags on WordPress.org. About 20 times the installs, rated 4.7 against 4.5, last updated 12 days ago.
- 7
CompressX — AVIF & WebP Converter, Media Replacement
5.0 (191) 40,000+ active installsAVIF & WebP converter with built-in media replacement for local image optimization.
Shares the AVIF, convert webp tags on WordPress.org. About 4 times the installs, rated 5.0 against 4.5, last updated July 29, 2026.
- 8
ShortPixel Adaptive Images – WebP, AVIF, CDN, Image Optimization
4.8 (144) 10,000+ active installsStart serving properly sized, smart cropped & optimized images, plus CSS, JS and fonts from our CDN with a click; Automatic AVIF & WebP support.
Shares the AVIF, image optimization tags on WordPress.org. A similar number of installs, rated 4.8 against 4.5, last updated 18 days ago.
- 9
Perfect Images: Regenerate Thumbnails, Image Sizes, WebP & AVIF
4.8 (279) 60,000+ active installsOptimize image sizes, regenerate thumbnails, enable retina, convert to WebP/AVIF, or use cloud optimization. An essential image toolkit.
Shares the AVIF tag on WordPress.org. About 6 times the installs, rated 4.8 against 4.5, last updated 2 days ago.
- 10
TinyPNG – JPEG, PNG & WebP image compression
4.5 (176) 100,000+ active installsSpeed up your website. Optimize your JPEG, PNG, and WebP images automatically with TinyPNG.
Shares the compress images tag on WordPress.org. About 10 times the installs, last updated 13 days ago.
Switching from Kraken.io Image Optimizer: common questions
What is the best alternative to Kraken.io Image Optimizer?
Robin Image Optimizer is the closest match: it shares the same WordPress.org tags and has 100,000+ active installs with a 4.4 out of 5 rating.
Which Kraken.io Image Optimizer alternative has the most users?
Smush, with 1 million+ active installs reported by WordPress.org.
Which Kraken.io Image Optimizer alternative is rated highest?
CompressX, rated 5.0 out of 5 by 191 reviewers. Only plugins with at least 50 reviews are counted.
Are these Kraken.io Image Optimizer alternatives free?
Every plugin listed here is free to install from WordPress.org. Where WordPress.org marks a plugin as commercial, the developer also sells a paid version or add-ons, and that is shown on each plugin.
How are alternatives chosen?
Automatically, from WordPress.org data: plugins that share a category top 10 with Kraken.io Image Optimizer score highest, then plugins that appear in the same WordPress.org rankings, then plugins with the same tags, weighted so rare tags count more than common ones. Plugins by the same author and plugins rated under 4.0 are left out.
How we choose these alternatives
Nothing on this page is picked by hand. Every day we walk the whole WordPress.org directory, then score every plugin against Kraken.io Image Optimizer on three signals: sharing a category top 10 counts most, then appearing in the same WordPress.org rankings, then carrying the same tags, with rare tags counting for more than common ones like "wordpress". Plugins by the same author are excluded, so an author's own add-ons cannot fill the list, and so is anything rated below 4.0 or with fewer than 100 active installs. The ten highest scores are what you see, in that order. Full methodology.
The bottom line
Robin Image Optimizer is the closest match to Kraken.io Image Optimizer by the data we track, and Smush has the widest reach with 1 million+ active installs. Perfect Images shipped the most recent release, on September 5, 2026. The list is rebuilt every day from WordPress.org, so a plugin that stops being maintained drops out on its own.
Weekly · free
What moved this week
One email a week, built from the same daily snapshots these rankings come from: the plugins that climbed, what launched, and one ranking worth a look.