How to Optimize Your Website Images for Faster Loading

There is one thing that you always want to do for a faster website loading and that is optimizing your images. Therefore we need a smaller file size for our images. But how do we do that? How can we cut off kilobytes to improve the loading speed of our website and enhance mobile usage.

I have 2 solutions for you. The first is a tool that I use to optimize my images and the other is a online optimization tool.

Caesium Image Compressor

This is by far my most favorite tool to optimize my images. It does it all.
As you can see in the screenshot, you have quite a few options. First of all, you can bulk upload so that you can optimize all your images at once.

You can also set the quality. I mostly leave it to 80%  or 90%. Don’t worry, when you leave it to 80% you won’t even notice that you lost some quality.

The resize option is a really nice one to have. I’ve used it a couple of times now and I’m very happy with the results.

And then we have the Output folder. I mostly use the ‘same folder as input’ function with the ‘_compressed’ suffix. I do this so I can compare once again afterwards and I am sure that I’m using the compressed image. But of course, you choose what suits you best.

When you’re done, you press the ‘Compress!’ button and Voila, magic happend.
The result of the optimized images.


Unfortunately for Mac users, this tool is only for Windows. But, I found an alternative for Mac. This tool is similar to Caesuim but might lack some functions. I did not test it myself.

Download for Windows: Caesium Image Compressor

Alternative download for Mac: Imageoptim

The next one is an online tool you can use. In my opinion it is not as good as the Caesium tool but it does the trick.
You can bulk upload your images by dragging and dropping them into the upload area. Next you can choose for lossy and lossless. I used to test them both and compare the results. And again a nice to have is the possibility to resize your images.

As a free user you can upload files of maximum 1 MB
When you are done, you can download them one by one, download them all as a ZIP file or sync it with your Dropbox account.

Example lossy
Example lossless
kraken-example-losslessOnline tool:

As you can notice, Caesium did a better job but is a pretty good online alternative.
If you found similar or better tools for online and or offline you can share them in the comments below and I might give them a try.

That’s it! Optimizing your images for the web is crucial for improving website loading speed and enhancing mobile usage. In this tutorial, we explored two effective solutions for image optimization: Caesium Image Compressor and Caesium Image Compressor, available for Windows users, offers a range of options such as bulk upload, quality adjustment, resizing, and output customization. On the other hand, is an online tool that allows for bulk upload, lossy and lossless compression options, and resizing.

While Caesium Image Compressor tends to produce better results, serves as a decent alternative, especially for Mac users. Remember to compare and choose the tool that best suits your needs. Additionally, feel free to share any other tools you have found effective in the comments section below.

If you’re specifically interested in optimizing images for WordPress, make sure to check out our tutorial on “How to Optimize Images for WordPress: A Complete Guide.” It provides a comprehensive overview of optimizing images for WordPress websites, including tips on compression, resizing, choosing the right file types, adding alt text, using WebP, and more. Whether you’re a beginner or an experienced user, this guide has got you covered.

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  • Followed your link for Caesium. It seems there’s now a Mac version available.

    • Awesome Robert! It’s great that there’s now a Mac version of Caesium. More users can enjoy its features on their preferred platform. Enjoy exploring its capabilities!

  • Nice blog here! Also your site loads up very fast! What web host are you using? Can I get your affiliate link to your host? I wish my site loaded up as fast as yours lol

  • F*ckin’ amazing things here. I’m very satisfied to peer your article. Thanks a lot and i am taking a look ahead to touch you. Will you please drop me a mail?


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