Optimizilla – One of the Best Online Image Optimizers in 2021

What is Optimizilla? Today, full HD displays have become a minimum standard, where cheap smartphones also feature at least 5MP cameras. However, it becomes impossible to remember how much image size actually matters on the web. When you make a website, it is important to take into consideration the bandwidth. A high-resolution, large image may not pose an issue to modern broadband connections. However, when you stuff the site with premium-quality assets, it could turn your browsing experience into an actual drag. Additionally, users have to bear bloated hosting charges.

Webmasters are not the ones who have to deal with big images. When you try to email photos to others, the entire size of your email may turn out a problem if you need to mail 20 snaps. That’s why online image optimizers are the best things for uploading, sharing, or hosting images. Here, let’s tell you about some of the best image optimizers, such as Optimizilla, having an offline bonus feature included, which helps when your internet buzzes off. So, let’s get started with our amazing list without further ado!

Best Online Image Optimizers

1. Optimizilla

Optimizilla receives instant attractiveness points for the cute mascot. However, this image optimizer even offers a well-balanced approach to optimization. In addition to this, users could queue up over twenty images at a time. Optimizilla even features a very strong interface.

The image optimizer lets users set separate quality levels for images. They can simply adjust this level with the help of a slider. Also, they can preview the subsequent image in comparison with the original one.


This means that users do not need to download the resulting file repeatedly until they are satisfied with the image quality. They get a 23% reduction in the image size for JPG (70KB) by default. The JPG size is lesser than Kraken and bigger than Compressor. The image quality of Optimizilla is far better than Compressor and pretty comparable to Kraken.


Here, the PNG gets reduced to 64% and is nearly vague from the authentic ones. If you want to use this amazing image optimizer, you can do so by visiting imagecompressor.com.

PS: If you would like to know how to open HEIC files & convert HEIC photos and how to flip an image in Photoshopjust read more.

2. Image Test Setup

Before you dwell deeper into every image compressor, we like to set up how we carried out the test. It is not really expanse or scientific; it is a series of compressions through diverse compression engines. For showing the difference that file formats make when it comes to compression, we employed a PNG image and a JPG one.

In some cases, users can compress their images far way better if they save them using different formats. JPG images are great for pictures of actual places, people, things, and more. On the other hand, PNG images are perfect for text, icons, Windows screenshots on desktops, and others.

Sometimes you can compress your image a lot better if you save it using a different format, and JPG images are best suited for images of “real” people, places, things, etc.

Besides, here are the top HEIC to JPG converter and the best Android photo manager for your reference.

3. Kraken.io

The best characteristic of Kraken.io is that it offers an excuse to scream “release the Kraken!” whenever you use this image optimizer. Apart from this, it features the quickest solution that you can easily use.
With Kraken.io, users get to enjoy several premium tiers of this product, which differ mainly by how much gigabytes they can process every month. Its free web interface does not enable you resizing pictures or else use its Pro features. Plus, it is an easy drag and drop program that users can figure out in a few minutes.


The best part about Kraken.io is that users could queue several files at a time for fast batch processing. Users can even simply import images from Dropbox or Google Drive with just a single click. When carried out the test, Kraken.io reduced the JPG image size by around 15% (78 KB) and the PNG image by around 61% (10 KB).


When optimized with Kraken, there is a loss in quality. However, the image looks pretty amazing. Its website would be streamlined due to its optimization. The image quality of the compressed PNG is nearly identical to the authentic. That’s why you are going to love the PNG format because of the ability to be profoundly compressed without any loss in quality. One can download this image optimizer at the kraken.io website.

By the way, click here for the top best GIF cropper and the best GIF speed changer.

4. Compressor.io

Compressor.io offers severe file size reduction, which goes about 90 % in several cases. While most pictures would not get this kind of performance. This image optimizer is a perfect option for users who prefer complete file size in place of fine image details.

The interface of Compressor.io is simple to use and attractive. It turns out to be an amazing feature if you like to save a picture directly to Dropbox or Drive without downloading the same to the system. The only drawback of this program is that it processes one image at a time.


With the help of Compressor.io, one can reduce the file size up to 28% for the JPG picture (66 KB). For PNG images, the size could reduce by around 67 % to about 8 KB. This is all that this Compressor can do. When it comes to image quality, Compressor.io adds a significant range of noise to the picture. Thus, it is a good file size having less quality. Users need to try their images on different websites for finding the perfect one, which strikes a perfect balance between image quality and substantial size reduction. Its PNG image looks exactly as the one you get from Kraken. One could download this tool at Compressor.io.


5. ImageSmaller

Optimizilla alternative - ImageSmaller

Like Optimizilla, this is another great online image optimizer. ImageSmaller delivers pretty decent results. However, this compression program is restricted to processing a single image at one time. If you try out this compression program, you will find a good 54% reduction in image size, having a decent range of quality loss for the JPG. These images still work if you want to post them online or for other casual purposes. However, there is so much noise for using them in other ways. Also, the PNG got reduced by around 65% and derived the same results as others.

6. Offline Alternative to Optimizilla: RIOT

While these image compression tools need a working, stable internet connection, that is not always possible. However, it is a great idea to employ a backup in the form of an offline application or under situations that feature online optimization a bit less than ideal.

Perhaps you require processing more images or do not like to upload several images due to privacy reasons. So, whatever reason users need to employ an offline tool, it is best to choose the Radical Image Optimization tool or RIOT. This free software could virtually perform it all, whereas it is pretty simple to use.


RIOT features an amazing automatic suggestion mode. Here, you just need to drag the file in, and it is going to suggest a good compression level. With the help of its automatic setting, users receive about a 28% reduction in the image having a size 66 KB. As compared to Optimizilla, the size is greater, and the noise level remains high.


Another amazing thing about this compression tool is that it features a batch converter mode. Thus, users could queue up a lot of images as the system could handle and then leave it to do the rest. Hence, this compression program enjoys an advantage over other online solutions. For downloading this image compressor, you have to access the luci.criosweb.ro/riot/ website.

7. ImageRecycle


This image compression tool can compress PNG, PDF, JPEG, and GIF files with great results. The drag-and-drop interface of this application lets users drag images from the system to this optimizer for a simple workflow.

ImageRecycle even provides website analysis for free. When users request for analysis, the compression tool provides a free report designed for helping you understand which files on the site will benefit from optimization for improving the performance of your site.

This image compression program features WordPress plugin, Joomla Extension, Magento Extension, and Shopify application. If users employ one of these sites, they can employ the extensions of ImageRecycle to compress their images in place of navigating to a different site.

With this image compressor, users get access to its 15-day free trial having a 100 MB limit. After that, they can select to buy a paid subscription, which includes 1GB for $10, 3GB for $50, and 10GB for $50.

8. CompressNow

Optimizilla alternative - CompressNow

CompressNow is another great optimization program, which enables users to upload files in bulk. Here, you just have to upload your GIF, PNG, and JPEG files from the system and then set the compression percentage for them. After this, download these files to use them on your website.

Users can even drag and drop images up to 10 at a time. However, unlike CompressNow and Optimizilla, this tool applies a single optimization level to all photos that you upload. If these all photos need the same compression level, CompressNow will do the job for you in a faster and easy manner.

9. Trimage

Optimizilla alternative - Trimage

This application is perfect for Linux users when it comes to removing metadata and EXIF from images. Also, Trimage compresses your PNG and JPEG files to the highest compression level possible. So, if you are a PC or Mac user, then other options like Optimizilla will be better for your computer. This image compression tool is only suited for Linux systems.

10. TinyPNG

Optimizilla alternative - Tiny PNG

Just like Optimizilla, this image compression tool features a simple, nice interface. TinyPNG enables users to run about 20 images at one time. This application even comes with an ‘Export to Dropbox’ option. So, if you do not like to go with Optimizilla due to any reason, then TinyPNG will do the job for you. Its bulk upload feature makes it a great option.

11. Gift of Speed

Gift Of Speed

Another great option than Optimizilla on our list is the Gift of Speed. This image compression tool providers separate JPG and PNG compressors. It comes with a bulk upload feature for PNG. However, users do not get to enjoy this amazing feature for the JPG compressor.

Conclusion on Optimizilla

So, with these incredible image optimization programs, you will get your site to load in a faster way or to save space on the webserver. It even helps you to send manageable email pictures to family and friends.

So, these are some of the amazing image optimization tools, which are going to make your images more palatable. If you want the best results, then it is better to go with the best program only, which is Optimizilla. Now, download Optimizilla and enjoy it!