What is the difference between lossy and lossless compression?

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Lossy Compression
Compressing your images can also be done in another way: lossless compression. In this alternative, the file size is reduced without removing any image data.

This means that when you unzip the image, it new zealand cell phone number list will be exactly the same as the original, without any loss of quality. It's like putting a document into a ZIP file: when you unzip it, the document is intact, without any alterations.

Comparison of the two formats:

Feature Lossy Compression Lossless compression
How does it work? Removes some data from the image, resulting in a slight loss of quality. Reduce file size without deleting data, preserving the original quality.
Image quality Slight loss of quality, usually imperceptible. Original quality maintained at 100%.
File size Significantly reduces file size. File size generally larger.
Loading speed Improves page loading speed due to smaller file size. May result in slower upload speeds due to the slightly larger file size.
Reversibility Irreversible: the original quality cannot be restored. Reversible: the image can be restored to its original form.
Ideal use Ideal for web use where loading speed is critical and minimal loss of quality is acceptable. Ideal for applications where maximum quality is essential, such as in graphic work and professional photography.
The choice between lossy and lossless compression depends on the intended use of the images. We'll give you some examples later.