What does compression size mean?

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What Does Compression Size Mean?

When it comes to compressing files, you may have come across the term ‘compression size’. But what does this term actually mean? In simple terms, compression size refers to the amount of space that is saved when a file is compressed. The smaller the compression size, the more space you save.

Why is Compression Size Important?

Compression size is an important factor to consider when compressing files because it affects how much storage space you save. In addition, smaller file sizes can also help to improve load times. This is particularly important when it comes to large files such as videos or high-resolution images.

Different Compression Methods

There are different methods that can be used when compressing files, each with its own compression size. Two of the most common compression methods are lossless and lossy compression.

Lossless Compression

Lossless compression is a method that compresses the file without sacrificing any data. This means that the compressed file can be restored to its original state without any loss of quality. Examples of lossless compression formats include ZIP, PNG and GIF.

Lossy Compression

Lossy compression, on the other hand, is a method that sacrifices some data in order to achieve a smaller file size. While this means that the quality of the compressed file is lower than the original file, it is often a necessary compromise in order to save space. Examples of lossy compression formats include JPEG and MP3.

Factors that Affect Compression Size

Several factors can affect the compression size of a file. The type of file being compressed is a key factor, as some file types are more compressible than others. The level of compression used is also important – the higher the compression level, the smaller the file size, but also potentially lower quality. Additionally, the software or tool used to compress the file can also have an impact on the compression size.


In summary, compression size refers to the amount of space that is saved when a file is compressed. It is an important factor to consider when compressing files, as it can affect how much storage space you save and the load times of your files. By understanding the different compression methods and factors that affect compression size, you can make informed decisions and achieve optimal results when compressing your files.

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