ShortPixel Image Optimizer – Optimize… vs WP Compress – Instant Performance &… (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
ShortPixel Image Optimizer – Optimize…
300K+ active installs
Free
WP Compress – Instant Performance &…
10K+ active installs
Free
Quick Verdict
As of April 2026, ShortPixel Image Optimizer – Optimize… has a higher user rating (4.5/5 from 804 reviews) and leads in active installations (300K+ vs 10K+). Both are free WordPress plugins. ShortPixel Image Optimizer – Optimize… has accumulated 18M+ total downloads while WP Compress – Instant Performance &… has 1.1M+.
Detailed Comparison
| Metric | ShortPixel Image Optimizer – Optimize… | WP Compress – Instant Performance &… | |
|---|---|---|---|
| Rating | 4.5/5 | 4.5/5 | |
| Total Reviews | 804 | ◄ | 152 |
| Active Installs | 300K+ | ◄ | 10K+ |
| Total Downloads | 18M+ | ◄ | 1.1M+ |
| Support Resolution | 100% | N/A | |
| Last Updated | 1 week ago | ► | Yesterday |
| First Released | 2014 | 2018 | |
| Age | 12 years | 8 years | |
| WP Requires | 4.8.0+ | 6.5+ | |
| PHP Requires | 7.4+ | 7.4+ | |
| Business Model | Free | Free | |
| Latest Version | 6.4.4 | 7.00.01 |
Rating Breakdown
ShortPixel Image Optimizer – Optimize…
WP Compress – Instant Performance &…
Download Trends
Over the past 30 days, ShortPixel Image Optimizer – Optimize… averaged approximately 6,617 daily downloads while WP Compress – Instant Performance &… averaged 1,502.
Recent Reviews
ShortPixel Image Optimizer – Optimize… Reviews
Excellent plugin
Image compression is excellent. Easy to use & affordable. AI SEO for image fields is brilliant!!! Saved me many hours. No need for support (so far)… and that’s how you want it… ie. works out
great plugin!
works great and the support is great too!
Excelente Herramienta para wordpress
Una excelente herramienta totalmente recomendada This topic was modified 1 month ago by janofernandez.
WP Compress – Instant Performance &… Reviews
Does Not serve modern image formats for all
Does not convert .jpg to modern image formats like .webp in all environments This topic was modified 2 weeks, 3 days ago by jtohme.
Fantastic plugin & helpful support
I’ve used WP Compress for a over a month now and safely say it’s truly worthy of 10 stars if I could rate it that. Websites that previously felt like they crawled are now cruising faster than I could
Really helps our agency!
We’ve tried other performance plugins but nothing has compared with as many agency features as WP Compress. Thank you for fast speeds, unlimited websites and easy management!
More Image Optimization Worth Comparing
Top alternatives in the same category as ShortPixel Image Optimizer – Optimize… and WP Compress – Instant Performance &…
Automatically resize, optimize, and convert images to WebP and AVIF. Compress images in bulk or on upload to boost your WordPress site performance.
Optimize images in 1‑click: compress, resize & convert to WebP/AVIF - free up to 20MB/month. Enjoy the easiest WordPress image optimizer to set up.
Compress and optimize images, enable lazy load, serve WebP & AVIF, and speed up your site with a global image CDN.
Speed up your website by using our WebP & AVIF Converter. Optimize images and serve WebP and AVIF images instead of standard formats!
Automatically optimize images: bulk compression, lazy loading, WebP/AVIF conversion. With CloudFront image CDN to boost Core Web Vitals & conversions!
reSmush.it is the FREE image compressor and optimizer plugin - use it to optimize your images and improve the SEO and performance of your website.
Frequently Asked Questions
Is ShortPixel Image Optimizer – Optimize… or WP Compress – Instant Performance &… more popular?
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.