Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize vs ShortPixel Image Optimizer
Two WordPress plugins head to head: ranking, active installs, downloads and ratings, from our daily tracking of the WordPress.org directory.
These aren’t all alternatives to each other — they do different jobs — so this page compares popularity only, not features.
At a glance
ShortPixel Image Optimizer leads the WordPress.org popular list today at #193, ahead of Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize at #1,572. Over the last 7 days ShortPixel Image Optimizer climbed 1 place and Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize climbed 2 places. ShortPixel Image Optimizer has the largest install base, roughly 30× the next: 300K+ active installs against 10K+ for Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize. Ratings: Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize 4.5★ from 119 and ShortPixel Image Optimizer 4.5★ from 819 reviews.
| Metric | Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize | ShortPixel Image Optimizer |
|---|---|---|
| Popular rank today | #1,572 ▲ 2 | #193 ▲ 1 |
| Active installs | 10K+ | 300K+ |
| Downloads, last 7 days | — | 126,531 |
| Rating | 4.5★ (119) | 4.5★ (819) |
| Last updated | Jun 22, 2026 | Sep 9, 2026 |
| Current version | 3.0.3 | 6.5.6 |
| Best rank on record | #1,572 | #193 |
| Days in the top 50 | 0 | 0 |
| On WordPress.org since | Feb 2014 | Nov 2014 |
Highlighted cells mark the strongest figure in each row. Rank and installs are from the latest WordPress.org capture; downloads are the last seven captured days.
Ranking history Lower is better
Active installs
Downloads per day
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Frequently asked questions
Which is more popular, Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize or ShortPixel Image Optimizer?
By active installs, ShortPixel Image Optimizer: 300K+ sites run it against 10K+ for Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize, according to WordPress.org figures captured on September 13, 2026.
Which ranks higher on WordPress.org, Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize or ShortPixel Image Optimizer?
ShortPixel Image Optimizer, at #193 on the WordPress.org popular plugins list today, with Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize at #1,572. The ranking reflects recent installs and moves daily, which is why this page shows the history rather than one snapshot.
Are Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize or ShortPixel Image Optimizer alternatives to each other?
Not all of them. Some of these plugins do different jobs and many sites run more than one. This page compares their popularity, not their features.
Where do these numbers come from?
WordPress.org publishes each plugin’s active install count and its position on the popular list. This site records both every day, along with per-day downloads and ratings, so the charts above show how the plugins have moved over time rather than a single day.