Next, we want to test a PNG image to see how our competitors optimize it.
Posted: Tue Jan 07, 2025 6:15 am
Automatically optimize images and serve them to your visitors using a CDN. This reduces server load and speeds up image loading for visitors.
To access image optimization, you can also use the free version of the plugin.
If you like the idea of Jetpack but are looking for a plugin that can replace all of luxembourg phone number its features, check out our guide on the best WordPress Jetpack plugin alternatives.
Comparative test scores for image compression plugins
Now that you understand the different WordPress image compression options, let’s see how they compare in terms of performance.
To measure this, we tested by loading the same image with each plugin.
Check JPEG image compression
In our tests we used the following JPEG image, which is 118.3 KB in size.
JPEG test image
We didn't touch any plugin settings and tested compression using default settings. The following are the test results:
plug-in Compressed size save(%) method
EWW Image Optimizer 64KB 54.24% Lossless
Opmoller 64KB 54.24% Lossless
Short pixel image optimizer 72 KB 39.30% Lossless
Re Smush.it 78 KB 20.81% Lossless
Compress JPEG and PNG images 118.1 KB 2% lossy
Check PNG image compression
For testing we used the following PNG image, which is 99.4 KB in size.
PNG test image
Here are our test results:
plug-in Compressed size save(%) method
EWW Image Optimizer 97 KB 1.9% Lossless
Opmoller 41KB 64% Lossless
Short pixel image optimizer 36KB 56% lossy
Re Smush.it 36KB 56% Lossless
Compress JPEG and PNG images 34.3 KB 54% lossy
What is the best image compression plugin for WordPress?
If you are looking for the best image compression plugin, EWWW Image Optimizer is the best choice.
It offers high levels of compression without sacrificing image quality, plus it comes with Image CDN and other features that optimize website speed.
Another good option for sites with less traffic is Optimole. It runs entirely in the background and takes care of image optimization for you, and it's free for up to 5,000 visitors per month.
To access image optimization, you can also use the free version of the plugin.
If you like the idea of Jetpack but are looking for a plugin that can replace all of luxembourg phone number its features, check out our guide on the best WordPress Jetpack plugin alternatives.
Comparative test scores for image compression plugins
Now that you understand the different WordPress image compression options, let’s see how they compare in terms of performance.
To measure this, we tested by loading the same image with each plugin.
Check JPEG image compression
In our tests we used the following JPEG image, which is 118.3 KB in size.
JPEG test image
We didn't touch any plugin settings and tested compression using default settings. The following are the test results:
plug-in Compressed size save(%) method
EWW Image Optimizer 64KB 54.24% Lossless
Opmoller 64KB 54.24% Lossless
Short pixel image optimizer 72 KB 39.30% Lossless
Re Smush.it 78 KB 20.81% Lossless
Compress JPEG and PNG images 118.1 KB 2% lossy
Check PNG image compression
For testing we used the following PNG image, which is 99.4 KB in size.
PNG test image
Here are our test results:
plug-in Compressed size save(%) method
EWW Image Optimizer 97 KB 1.9% Lossless
Opmoller 41KB 64% Lossless
Short pixel image optimizer 36KB 56% lossy
Re Smush.it 36KB 56% Lossless
Compress JPEG and PNG images 34.3 KB 54% lossy
What is the best image compression plugin for WordPress?
If you are looking for the best image compression plugin, EWWW Image Optimizer is the best choice.
It offers high levels of compression without sacrificing image quality, plus it comes with Image CDN and other features that optimize website speed.
Another good option for sites with less traffic is Optimole. It runs entirely in the background and takes care of image optimization for you, and it's free for up to 5,000 visitors per month.