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WebP 101
Basic knowledge about WebP
Features of WebP
History of WebP
Learn more about WebP
Advantages of WebP
Disadvantages of WebP
Quality of WebP
Technology for WebP
Lossy and lossless compression of WebP
FAQs about WebP
What is WebP?
How to view WebP?
How can you convert a WebP image to an image in other formats?
Is there any free WebP converter you can use?
Techinical FAQs about WebP
What is an optimal quality value for WebP?
How can you upload a WebP image on websites?
What is the maximum resolution and color depth for WebP?
What should you remember when converting an image to a WebP image?

What is an optimal quality value for WebP?

What does the quality value mean when saving an image as a WebP file?

The quality value means the level of the image quality of a WebP image using lossy compression. Lowering the value reduces the file size but the image quality also gets poorer. Please visit the following link to learn about the relation between the quality value and the image quality.

What is the best and most ideal quality value for a WebP file?

It is hard to suggest a fixed quality value guaranteeing both the small file size and high image quality at the same time. You need to consider the content of an image and adjust the quality value on your own to find out the most ideal value, but a value between 50-80 is moderate in most cases.

If the quality value is 80 or more, the image quality hardly improves and only the file size becomes bigger. If the value is 50 or less, the file size hardly becomes smaller and only the image quality gets severely damaged.

If you use lossless compression when saving an image as a WebP file, the file has the same image quality as that of the original image and there is no need to set the quality value. Instead, the decrease in the file size is not very big.

You need to choose the best quality value depending on the content of the image; please visit the following link to learn about the know-how.