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ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF

By ShortPixel

Performance & Optimization / Image Optimization & Compression

ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF Review - In-Depth Analysis

Optimize images and PDFs smartly with ShortPixel. Convert and compress to next-gen formats like WebP and AVIF. Enhance site speed and SEO effortlessly.

Performance Overview

WPS Score

6.88/10

User Rating

4.5/5 (based on 814+ reviews)

Active Installations

300,000+

Update Frequency

Outstanding It is calculated using the weighted average of same category plugins.

Security Score

5 / 10 (Medium Risk) It is calculated using the weighted average of all versions.

What It Does

The ShortPixel Image Optimizer is a powerful tool designed to optimize images and PDFs for your website. With just one click, you can bulk compress images to next-gen formats like WebP and AVIF, significantly boosting your site's speed.

This plugin is user-friendly and works seamlessly with any type of website, from small blogs to large WooCommerce stores. It offers features such as lazy loading, smart cropping, and resizing to ensure your images are optimized without losing quality.

ShortPixel also includes a built-in global Content Delivery Network (CDN) to deliver optimized images quickly, enhancing user experience and improving your SEO performance. With options for both lossy and lossless compression, you can choose the best method for your needs.

Comparing to Alternatives

ShortPixel Image Optimizer stands out among image optimization plugins with its balance of compression quality and feature set. Compared to other popular plugins, it offers versatile options and reliable support.

Top alternatives

Strengths

High-quality image compression with minimal quality loss
Supports multiple compression levels (Lossy, Glossy, Lossless)
Bulk optimization feature saves time on large image libraries
Supports modern formats like WebP and AVIF
Responsive and helpful customer support

Weaknesses

Bulk optimization can be slow and prone to errors in some cases
Consumes a high number of credits for images with multiple thumbnails
May break custom thumbnail sizes without warning
Removing the plugin can leave orphaned images requiring manual cleanup

User Sentiment Analysis

User feedback highlights ShortPixel's effectiveness and support quality, though some users report performance and technical issues.

Positive highlights

Excellent and prompt support team (antconnectnpc, isquaredgiving2099)
High compression quality with negligible visual loss (dforster247)
Easy to use interface and setup (alb99, morrischapman)
Bulk optimization saves significant time (onlinebuddy)
Reliable and consistent performance over years of use (miguelrzdesign17)

Common complaints

Slow bulk optimization with occasional errors (askhematologist, threadina)
High credit consumption for images with multiple sizes (askhematologist)
Lack of warnings for potential issues with custom thumbnails (threadina)
Orphaned images remain after plugin removal requiring manual fixes (threadina)

Weaknesses

Performance issues during bulk processing
Potential compatibility issues with custom image sizes
No automatic backup before optimization
Manual cleanup needed after uninstall

Who Should Use This?

Best for

Website owners and developers seeking high-quality image compression with flexible options and reliable support, especially those managing large image libraries who benefit from bulk optimization.

Not ideal for

Users with complex custom thumbnail setups or those needing extremely fast bulk processing might find the plugin less suitable due to occasional errors and slower optimization speeds.

Pricing & Value

Free version includes

The free version offers generous image optimization credits, support for multiple compression levels, and conversion to modern formats like WebP and AVIF, providing substantial value for small to medium websites.

Pro version (3.99 - 31.99 USD / month)

Premium features include higher monthly credit limits, priority support, advanced AI-based SEO alt text generation, and faster processing speeds suitable for larger websites and professional use.

Final Verdict

ShortPixel Image Optimizer is a powerful and user-friendly plugin that delivers excellent image compression quality and supports modern formats, enhancing website performance and SEO.

While some users experience slower bulk processing and occasional technical issues, the responsive support team and feature-rich premium options make it a top choice for many WordPress users.

Other Notable Features

Here are a few other notable features of this free ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF plugin.

Image optimization

Compress images

Convert WebP

Screenshots

FAQ

ShortPixel consistently has better compression rates along with more features, backup support and has very affordable one-time or monthly plans.
Here are a couple of independent reviews:
AuthorityHacker – “ShortPixel is our tool of choice, simply because it’s pretty much automated – we just let it do its thing.” (read full review)
WP Modula – “One of the reasons I’m personally a huge fan of ShortPixel is the built-in support for next-gen image formats like WebP.” (read full review)

You have to activate the plugin in the network admin and then activate it manually on each individual site in the multisite. Once you have done that, the Settings menu appears and you can add the API key for each individual site.
As an alternative, you can edit wp-config.php and add this line:

define('SHORTPIXEL_API_KEY', 'APIKEY');

where APIKEY is the API Key received upon sign up.
If configured that way, the API key will be used for all the sites of the multisite but will only be visible on the main site’s Settings page, being hidden for the rest of the sites.

There is a simple way to hide the API key, all you need to do is to add these two lines in your wp-config.php:

define('SHORTPIXEL_API_KEY', '<<your api key here>>'); define('SHORTPIXEL_HIDE_API_KEY', true);

Contributors and developers

“ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF” is open source software. The following people have contributed to this plugin.

ShortPixel

Pro version Free Version Docs Live Demo

WPS

6.88

Average

Pro version

Ratings

4.5 out of 5 | 814

Version

6.5.2

Last updated

3 weeks ago

Active installations

300,000+

WordPress version

7.0 or higher

PHP version

7.4 or higher

Languages

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ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF Review - In-Depth Analysis

Performance Overview

What It Does

Comparing to Alternatives

User Sentiment Analysis

Who Should Use This?

Pricing & Value

Final Verdict

Other Notable Features

Screenshots

FAQ

Contributors and developers

Ratings

Reviews (814)

Sort by:

Contributors & Developers

Interested in development?

Changelog

Security Status

Secure

No Unpatched Vulnerabilities

Known Vulnerabilities (7)

WPS

6.88

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