However, lossy compression becomes noticeable when a file you modify and resave a file multiple times. Although the file no longer contains the same amount of data as it had before compression, this is usually not visible, even if the image's resolution has decreased. The compression algorithm removes any data it deems unnecessary from the image, resulting in a smaller file size. Lossy compression is a technique of data compression in which the file size is reduced by removing data from the file, i.e., image quality is sacrificed in order to reduce file size.

Types of Compression: Lossy Compression and Lossless Compression Lossy Compression It is way faster to share a picture of 2MB on Facebook than a 20MB picture. To reduce the time needed to share them online, and from one storage device to another.

The first and most obvious reason we compress photo is to free up more space on your storage device (smartphone, cloud, flash drive, system, cards).

You now get the picture, right? So, let us see some reasons you need the reduce the file size of your photos. In other words, it is getting rid of some of the photo's data, making the file size significantly smaller, but still retaining most of its quality. When you minimize the size of a photo file, in bytes, without necessarily reducing the quality to a level that is unacceptable, you have successfully compressed a photo. What is Compression, and Why Do You Need to Reduce Photo File Size?

FAQs: Other Tips for Free Up Space on Mac.

Using Other Third-Party Image Compressors to Reduce Photo File Size.

Compress photos in a folder into a ZIP file.

How to compress an album using the iPhoto/Photos app.

How to compress one photo using the Preview app.

3 Efficient Ways to Compress Photos on Mac.

Types of Compression: Lossy Compression and Lossless Compression.

What is Compression, and Why Do You Need to Reduce Photo File Size?.

Compress image automator mac