Caesium Image Compressor - Great Image Compression Tool With High Flexibility (Review 2021)

Caesium Image Compressor - Great Image Compression Tool With High Flexibility (Review 2021)

When uploading images on your website, you must make sure to choose the appropriate format for each image as well as keep its size (in pixels) to a minimum. Therefore, smaller images with appropriate quality are the best to use as they have an impact on website loading time.

There are many applications for image compression. However, not all of them offer it while preserving the image quality. Among them, there is one application that works perfectly for that purpose, Caesium Image Compressor.

Getting Started

Caesium is an image optimization software to help you store, send, and share digital pictures. It allows you to reduce the size of your picture up to 90% while preserving the original visual quality. Hence, you can save a lot of space and easily upload your pictures on the web in a moment. Overall, the software is user-friendly with a simple and clear interface.

Caesium Products

Within Caesium, there are three products offered:

  1. Image Compressor – downloadable software for Windows OS
  2. Command Line Tool – compression software for Linux and Mac OS
  3. Online Compressor – online compression website

In this post, we are covering the Caesium Image Compressor.

What Is Caesium Image Compressor?

Caesium Image Compressor is an image compression application that allows you to compress your pictures up to 90% without visible quality loss. Inside the app, you can see the real-time preview and do multiple image processing at once. You will be able to get the best image result when using this automatic compression process. Furthermore, advanced users will get extra features, like metadata storing options or folder structure support.

There is an option to set the compression level so you can measure the quality reduction to your liking. In addition to that, Caesium supports all image compression formats such as JPG, PNG, BMP, GIF, and WMF. Unfortunately, there’s no lossless option for the JPG and BMP compression as it just reencodes the file at your chosen quality setting. However, Caesium does provide support lossless PNG compression but with major limitations.

One of the best things about Caesium Image Compressor is its flexibility. You can compress all types of images both online and offline. Not only that, but it’s very easy to use because of the simple yet effective interface. Moreover, you can enjoy everything above inside Caesium Image Compression for free.

Read also: Tips & Trick on How to Compress Images Without Losing Quality

What Are the Features of Caesium Image Compressor?

Resize your pictures up to 90% preserving the quality

The software uses an intelligent file compressing method that allows the image to be compressed with good quality.

Batch processing

Not only one image compression, but you can compress as many pictures as you like at once in a few seconds. Moreover, Caesium Image Compressor supports all common file formats, such as JPG, BMP, PNG, GIF, WMF.

Easy preview

There is an easy preview so you can see the final result before the compression process takes place.

Picture-by-picture compression level

Unlike other online compression tools, you can set the compression level of your pictures in Caesium Image Compressor.

Compression slider

You can easily set your compression level using the easy slider in Caesium Image Compressor.

Drag & Drop

This feature enables you to easily drag and drop your pictures directly into the list.

Rename all files with a custom suffix

Add specific suffix to your image files to distinguish them from other pictures.

Where Can I Download Caesium Image Compressor?

Caesium Image Compressor offers downloadable applications for Windows, Mac, and Linux. Apart from that, there is also an online image compressor that you can use directly from your browser. You can get all products of Caesium Image Compressor on its official website.

Caesium Image Compressor for Windows

For Windows users, you can install Caesium Image Compressor software to allow you to compress images offline. There are 3 download options that can match your needs:

Caesium Image Compressor for Mac

For Mac users, you can use Caesium Image Compressor offline by utilizing the Command Line Tool.

As an alternative, Caesium Image Compressor recently releases its software for Mac OS. However, this version is still unstable compared to the Windows one.

Download Caesium Image Compressor for Mac

Caesium Image Compressor for Linux

Unfortunately, if you want to download software for compressing images online, Caesium Image Compressor only provides you with its Command Line Tool. It contains scripts, programs, and libraries to help you set up Caesium Image Compressor for your Linux PC.

Caesium Image Compressor Online

If you are not willing to download any software and want an online image compressor you can use Caesium Online Compressor

Using this, you only need to upload one or several images at once to the web. After that, you can set the options for quality percentage, lossless compression, and metadata settings.

Is Caesium Image Compressor Good?

Yes, Caesium Image Compressor is a good images compression tool for photographers, bloggers, webmasters, businesses, and casual users that is available for free. This tool offers complete features for compressing images, such as lossless compression, batch compression, compression level setting, and easy preview. Moreover, it supports all types of images starting from JPEG, PNG, GIF, BMP, and WMF. Additionally, the app has a simple and intuitive interface, hence, it’s easy to use even for the beginner.

How to Use Caesium Image Compressor?


  • Great lossless image compression
  • Free
  • Easy to use
  • Allows you to set the compression level
  • Work offline & online


  • Many bugs
  • Crashes often
  • No zoom in the image preview

What Are the Alternatives to Caesium Image Compressor?

Other than Caesium Image Compressor, there are several applications that can help you compress images. Actually, we have compiled the Top 10 Best Image Compression Tools for Website.

For the Caesium Image Compression alternative, we are going to divide them according to their ways of compressing images.

Image Compression Software

Online Image Compression

Image Editor Software

  • Adobe Photoshop
  • Adobe Lightroom
  • Microsoft Photos

WordPress Plugin


Caesium Image Compressor is a free application for compressing images without losing quality. It supports common image supports like JPG, PNG, BMP, GIF, etc and allows you to set the compression level. This tool is great for website owners to examine their images before uploading them on websites. Based on the reviews, this app actually does the work wonderfully and is easy to use. Even though some reviewers say it often crashes and contains many bugs, Caesium Image Compressor is still a recommended application you can try out.

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