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Difference between ISO and CSO

Difference between ISO and CSO

One of the most common questions people have about digital images is what the difference between ISO and CSO files is. Many people are not sure which format to use when they are saving an image, and whether one format is better than the other. In this blog post, we will explore the difference between ISO and CSO image formats, and help you decide which format is best for your needs.

What is ISO?

ISO is a file format that is used to store images. It was developed by the International Organization for Standardization, and it is often used to store pictures that have been taken with digital cameras. ISO files are similar to JPEG files, but they are typically larger in size. This file format is also sometimes used to create CD and DVD images. When an image is saved as an ISO file, it can be reopened and edited just like any other image file. However, it is important to note that ISO files are not compatible with all image editing software programs. In order to open and edit an ISO file, you will need to use a program that supports this file format.

What is CSO?

CSO is an image format for storing compressed image data. It is commonly used for storing image files on game discs and other optical media. CSO files are similar to ISO files but are typically smaller in size due to the compression that is used. CSO files can be created from ISO files using various tools and can be opened with most image mounting software.

Difference between ISO and CSO

ISO and CSO are image formats used to compress files for playing video games on the PSP. They are very similar, but there are some key differences between them. ISO files are raw image files that have not been compressed, while CSO files are compressed image files. As a result, CSO files take up less space on your PSP’s memory card. However, ISO files can be played directly from the memory card without needing to be decompressed first, while CSO files must be decompressed before they can be played. Additionally, ISO files typically have better image quality than CSO files. For these reasons, many PSP gamers prefer to use ISO files.


The difference between ISO and CSO image formats is that ISO is a lossless compression format while CSO is a lossy compression format. This means that an ISO file will be larger than the corresponding CSO file, but the quality of the image will be maintained when it is decompressed. For this reason, we recommend using the ISO format whenever possible to ensure the best quality for your images.

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