7 Best WordPress Image Optimisation Plugins Compared

On the lookout for the perfect WordPress picture optimization plugin to hurry up your website?

In response to the HTTP Archive, pictures comprise about 50% of the file measurement of a mean net web page, so finding a method to shrink that can make a constructive influence in your website’s web page load occasions.

A picture compression plugin gives a simple method to repair that as a result of you possibly can continue to add pictures like normal, while having the plugin routinely optimize them within the background.

That will help you find the most effective picture optimization plugin in your website, I went hands-on and tested seven common choices. For every plugin, I’ll share its:

  • Key features
  • Interface (AKA real screenshots of the way it works)
  • Efficiency (using the same check picture for each plugin)
  • Pricing

What’s more, all of these plugins additionally supply at the least some form of free plan, though some are extra beneficiant than others.

Let’s get optimizing…

How I’ll Check These Plugins

To check the efficiency of those image optimization plugins, I’ll add and compress the same JPEG and PNG photographs with every plugin.

Some notes:

  • No resizing the image dimensions – only compression.
  • I’ll use the max lossy compression and lossless compression (two checks). I feel that is the fairest method to do issues, as every plugin handles things in another way.
  • I will delete the EXIF knowledge, when the plugin presents that function.
  • The unique JPG image is 294 KB.
  • The original PNG image is 272 KB.

I may also observe when the compression degree brought on a noticeable change in image quality. If I don’t mention the image high quality, you’ll be able to assume that there’s little distinction in high quality (to the naked eye, at the least).

ShortPixel is a well-liked freemium choice that’s lively on over 100,000 websites.

As of a current launch, ShortPixel truly comes in two variations:

  • ShortPixel Image Optimizer – resizes and compresses your photographs mechanically.
  • ShortPixel Adaptive Pictures – along with resizing and compressing pictures, it additionally serves your photographs from a CDN and dynamically resizes them based mostly on each consumer’s gadget. For example, somebody on a Retina display will get a high-resolution image, while someone on a smartphone would get a low-resolution image.

I’ll check the common image optimizer, as that’s the preferred model. However ShortPixel Adaptive Photographs can also be value testing in the event you like what you see.

Key Options

ShortPixel Image Optimizer

  • Routinely compress photographs using a number of levels of lossy or lossless compression.
  • Routinely resize image dimensions to a most that you simply set.
  • Compress JPG, PNG, GIF (together with animated GIFs) and even PDF documents.
  • Convert photographs to WebP format.
  • Select which picture thumbnail sizes to compress.
  • Maintain a backup of the original picture.

ShortPixel Adaptive Photographs

  • Serve photographs from a worldwide CDN.
  • Dynamically resize photographs based mostly on the dimensions of particular person visitors’ units.
  • Sensible cropping, to crop photographs whereas preserving the essential visuals.
  • Routinely serve WebP photographs to browsers that help WebP.

Interface / Ease of Use

ShortPixel is pretty straightforward to use.

As soon as you put in and activate it, you’ll have to enter your e-mail to generate a ShortPixel API key. You’ll be able to re-use the same API key throughout a number of websites, which is convenient for those who’re operating a community of web sites.

Once you validate your API key, you’ll get a simple settings space the place you’ll be able to:

  • Choose your required compression degree – two ranges of lossy compression, together with lossless compression.
  • Select whether or not to additionally optimize image thumbnails (the ones mechanically created by WordPress).
  • Management whether to maintain a backup of the unique image and/or remove EXIF knowledge.
  • Choose the max dimensions to mechanically resize photographs, as well as methods to crop photographs (if relevant– it’s also possible to just set a max width to preserve the unique facet ratio and keep away from cropping).

ShortPixel interface

The Superior tab enables you to management smaller features, like whether to create WebP pictures, convert to JPEG, and extra:

ShortPixel advanced

Once you make your decisions, ShortPixel will routinely optimize new pictures that you simply upload, and you can even:

  • Bulk optimize present photographs on your website.
  • Manually optimize pictures one-by-one


Max LossyLossless
JPG80 KB276 KB
PNG80 KB215 KB


ShortPixel provides you a certain month-to-month quota at no cost. After that, you’ll have to pay.

At no cost, you’ll be able to optimize 100 photographs per thirty days with no measurement limits. So in case you simply have to optimize a number of giant pictures, it provides great value.

After that, you’ll be able to either buy a month-to-month subscription or one-off picture optimization credits. The most cost effective subscription is $4.99 per thirty days for up to 5,000 pictures per thirty days, and the most cost effective one-time package deal is $9.99 for 10,000 pictures.

Keep in mind – this is in your complete ShortPixel account. That’s, you need to use your quota across multiple WordPress websites through the use of the same API key.

More Information / Download


Imagify is a freemium picture optimization plugin from the identical developers of the WP Rocket caching/efficiency plugin. As such, it slots in nicely with WP Rocket for a full-featured website performance suite.

Key Features

  • Mechanically optimize photographs with three totally different lossy and lossless compression ranges.
  • Create WebP photographs and serve them to browsers that help WebP.
  • Mechanically resize photographs’ dimensions.
  • Select which thumbnail sizes to optimize.
  • Again up the unique picture.
  • Add customized folders outdoors your Media Library to optimize.
  • Maintain a backup of the original image.

Interface / Ease of Use

Imagify has a very well-designed interface and is super straightforward to make use of. Like ShortPixel, you’ll start off by generating an API key to hook up with the Imagify service. Then, that may unlock the complete interface.

On the prime, you’ll be able to choose your desired compression degree. Like ShortPixel, you get two levels of lossy compression, as well as a lossless choice. You may also choose:

  • Whether to routinely optimize pictures on upload and/or back up the unique photographs.
  • Whether to keep EXIF info.

Imagify settings

Further down, you’ll be able to configure:

  • Whether to create and display WebP pictures.
  • Automated resize choices. You’ll be able to set a max width and then preserve the facet ratio.
  • Which thumbnail sizes to optimize.

If enabled, Imagify will routinely optimize all newly uploaded pictures. And you may also bulk optimize older photographs, or manually optimize individual pictures.


Max LossyLossless
JPG178 KB276 KB
PNG38 KB*212 KB

*The lossy PNG quantity is spectacular, but there was a noticeable distinction in quality. I couldn’t tell a distinction within the lossy JPEG, though.


Like ShortPixel, Imagify additionally provides you a certain free allotment per thirty days. Nevertheless, they calculate it in a different way.

As an alternative of doing it by the number of photographs like ShortPixel, Imagify limits you to 25 MB complete per thirty days. So if it’s a must to optimize a variety of small pictures, the free plan may supply higher value than ShortPixel.

After that, you should purchase one-time or month-to-month plans. The most cost effective monthly plan is $4.99 per 30 days for 1 GB of photographs, and the most cost effective one-time plan is $5.99 for 500 MB of pictures.

Extra Information / Download

EWW Image OPtimizer

EWWW Image Optimizer is exclusive in where it optimizes your photographs. Most image optimization plugins – together with ShortPixel and Imagify – hook up with external servers by way of an API and carry out the picture optimization on those exterior servers.

EWWW Image Optimizer, nevertheless, makes use of your personal server to optimize the pictures. This makes it free for unlimited usage, nevertheless it additionally signifies that you’re going to be using your personal server assets.

With that being stated, the plugin additionally provides you the choice of connecting by way of an API (in case you pay), so you’ll be able to select the strategy that works greatest for you.

For reference, I’m using the self-hosted version for my checks.

Key Options

  • Optimize photographs on your own server, or connect by way of the API for cloud optimization.
  • Optimizes JPG, PNG, GIF, and PDF.
  • Four totally different compression ranges, though not all are available totally free.
  • Mechanically resize photographs to max dimensions.
  • Dynamically serve photographs by way of a CDN and resize them to a consumer’s system (like ShortPixel’s adaptive photographs). This can be a paid service.
  • Schedule optimization to run at a certain time of day, which lets you schedule it for off-peak hours to preserve server assets.
  • Convert PNG to JPG, and vice versa.
  • Create and serve WebP pictures.

Interface / Ease of Use

Because of a current redesign, EWWW Image Optimizer’s interface is lots nicer wanting now.

Nevertheless, it still provides you a ton of various settings. Now, that’s not a nasty thing. In case you’re into having pinpoint control, you’ll like all those choices. However in case you’re an off-the-cuff consumer, you may feel a bit overwhelmed (by which case I might advocate one thing like ShortPixel or Imagify).

For instance, you’ll be able to see all those totally different tabs within the interface:

EWW Image OPtimizer settings


Max LossyLossless
PNG80 KB*212 KB

* This is probably the most aggressive lossy compression out there at no cost, but the premium version unlocks greater compression ranges.


The core EWWW Image Optimizer plugin is accessible without spending a dime for unlimited utilization.

You only have to pay if you wish to:

  • Hook up with the cloud optimization service for compression, CDN, and so forth.
  • Unlock all the compression methods and another features.

Compression plans value just $zero.003/picture. For instance, you possibly can compress 3,000 pictures for $9.

Then, the plan with the CDN costs $9 per 30 days.

Extra Information / Obtain

Kraken is the WordPress plugin model of the popular image optimizer. Aspect word – I exploit the net interface once I’m optimizing pictures for shopper sites.

It’s a pleasant simple choice, although it lacks a number of the advanced features in other plugins. For instance, there’s no WebP picture help.

Key Features

  • Makes use of the compression service.
  • Lossy and lossless compression strategies.
  • Routinely resize pictures to specified max dimensions.
  • Manually select JPEG high quality setting and chroma subsampling scheme.
  • Select which thumbnails to optimize.
  • Protect EXIF metadata.

Interface / Ease of Use

To get began, you’ll have to generate a Kraken API key to attach your website to the service.

From there, you’ll get a single settings web page the place you’ll be able to configure which optimization technique to make use of, in addition to:

  • Whether to mechanically optimize pictures on upload.
  • Automated picture resizing.
  • Which thumbnails to optimize.
  • Whether or not to protect EXIF knowledge.

Kraken interface


Max LossyLossless
JPG246 KB274 KB
PNG73 KB209 KB


Kraken provides you a one-time 100 MB credit totally free. After that, plans begin at $5 per thirty days for up to 500 MB of pictures and go up from there.

More Information / Download


Lively on over 1 million websites, Smush is, by the numbers, one of the widespread WordPress picture optimization plugins.

There’s an enormous purpose for that – it allows you to optimize limitless photographs at no cost using Smush’s servers (not your personal). There are some limits on that, but that’s nonetheless pretty beneficiant, and not one thing you discover typically.

Key Options

I’ll start with the important thing options within the free version:

  • Routinely compress pictures with lossless compression. No lossy compression totally free.
  • Routinely resize picture dimensions.
  • Select which thumbnail sizes to optimize.
  • Strip EXIF metadata.
  • Lazy load photographs for quicker initial web page load occasions.
  • Optimize pictures in external directories.
  • Bulk optimize 50 photographs on the similar time.

And in case you upgrade to the paid model, you’ll also get these features:

  • Use lossy compression.
  • Serve photographs from a CDN.
  • Convert and serve WebP pictures.
  • Back up the original picture.
  • Routinely convert PNGs to JPEGs
  • Mechanically bulk optimize all previous pictures.

Interface / Ease of Use

With Smush, there’s no API key to hook up with – you simply activate it and dive right in. They even offer you a nice setup wizard to configure the essential basics.

After that, you get a nicely-designed interface the place you’ll be able to configure primary and advanced settings:

Smush settings

There are additionally another tabs the place you’ll be able to configure functionality like lazy load.


Max LossyLossless

*Smush declared my PNG check image as “Already Optimized” and didn’t compress it.


If all you want is lossless compression, the free model enables you to optimize unlimited photographs (up to 5 MB in measurement every). So for lossless compression, this one is the most effective value.

Nevertheless, if you need lossy compression, in addition to all the opposite paid features, it could actually get just a little expensive since you’ll need a WPMU DEV membership, which prices $49 per thirty days (though it also gets you access to all of WPMU DEV’s other plugins).

Extra Information / Download

WP Compress

WP Compress is a more moderen WordPress image compression plugin that gives a beneficiant pricing structure and a well-designed interface.

It also claims to supply “over-compression prevention”, though I’m unsure tips on how to check that.

Key Features

  • Three totally different compression levels – two lossy and one lossless.
  • Routinely compress photographs on add and bulk compress older pictures.
  • Mechanically resize image dimensions.
  • Select which thumbnail sizes to optimize.
  • Delete EXIF knowledge.
  • Store backup of unique pictures within the cloud (quite than wasting your personal server area).

Interface / Ease of Use

Like a variety of the other plugins, you’ll want to add your API key to the plugin to get started.

You possibly can either begin with the plugin’s advisable settings or configure things your self.

The interface is clear and looks great. There are just a few key settings, all of that are simply accessible:

WP Compress settings


Max LossyLossless
JPG125 KB240 KB
PNG34 KB50 KB*

*I’m unsure what’s occurring here as a result of it doesn’t appear to be lossless. I might see a slight discount in quality in both lossy and lossless, though it was rather a lot less than what I noticed with Imagify.


WP Compress enables you to optimize your first 100 photographs totally free. After that, memberships begin at $5 for up to 1,000 pictures.

Nevertheless, their pricing has a singular (and beneficiant) strategy. Whereas most different instruments rely each thumbnail measurement as a separate picture for billing purposes, WP Compress doesn’t.

For instance, in case your theme has five totally different thumbnail sizes, a single image would take five credit at something like ShortPixel. However with WP Compress, it will solely take one credit to optimize all of the thumbnails.

Extra Information / Obtain

Colin Newcomer

Colin Newcomer is a contract author for rent with a background in search engine optimisation and internet affiliate marketing. He helps shoppers grow their net visibility by writing primarily about digital advertising and WordPress. You possibly can rent him to put in writing on your web site.

Disclosure: A number of the hyperlinks in this submit are affiliate links, which means that for those who click on one of many links and buy an item, we might receive a commission. All opinions nevertheless are our own and we do not accept funds for constructive critiques.