Custom image sizes quality

1. How does image size affect quality?
2. Does resizing photos affect quality?
3. What size should WordPress images be?
4. What is the best size for images on a website?

How does image size affect quality?

Higher resolutions mean that there more pixels per inch (PPI), resulting in more pixel information and creating a high-quality, crisp image. Images with lower resolutions have fewer pixels, and if those few pixels are too large (usually when an image is stretched), they can become visible like the image below.

Does resizing photos affect quality?

The most common side effect of scaling an image larger than its original dimensions is that the image may appear to be very fuzzy or pixelated. Scaling images smaller than the original dimensions does not affect quality as much, but can have other side effects.

What size should WordPress images be?

For most 'full page' web images, you want the image to be 80Kb-100Kb at most. If the image is only part of a page (e.g. half the width of a blog post), then 20Kb-30Kb is usually fine.

What is the best size for images on a website?

The dimensions of the original image you upload to your site can have a big impact on how it displays. We recommend using images that are between 1500 and 2500 pixels wide. Images smaller than 1500 pixels may appear blurry or pixelated when they stretch to fill containers, such as banners.