When it comes to creating an impressive website, the size of your images plays a crucial role. Whether you’re designing a custom website from scratch or using a pre-designed theme, it’s important to choose the right image dimensions, aspect ratios, and file sizes to ensure your website looks great and loads quickly.
To help you get started, we’ve put together a cheat sheet of standard image sizes for web pages that are best suited for a desktop with a resolution of 1920 x 1080 pixels, which is the most popular according to statistics. Here are the generally recommended image sizes for websites:
  • Background Image: 1920 x 1080 pixels, 16:9 aspect ratio
  • Hero Image: 1280 x 720 pixels, 16:9 aspect ratio
  • Website Banner: 250 x 250 pixels, 1:1 aspect ratio
  • Blog Image: 1200 x 630 pixels, 3:2 aspect ratio
  • Logo (Rectangle): 250 x 100 pixels, 2:3 aspect ratio
  • Logo (Square): 100 x 100 pixels, 1:1 aspect ratio
  • Favicon: 16 x 16 pixels, 1:1 aspect ratio
  • Social Media Icons: 32 x 32 pixels, 1:1 aspect ratio
  • Lightbox Images (Full Screen): 1600 x 500 pixels, 16:9 aspect ratio
  • Thumbnail Image: 150 x 150 pixels, 1:1 aspect ratio
It’s important to note that not only image dimensions are important, but also the image file size. Make sure to compress your website images to reduce the file size and ensure quick loading times. You can try TinyIMG online image compression tool for free to compress your website images.

When it comes to website image guidelines for 2023, image sizes greatly influence the user experience, search engine optimization, and overall website performance. Here’s a detailed overview of the guidelines for general image size specifications across websites:

Website Background Image Size:
  • Height: 1080 pixels
  • Width: 1920 pixels
  • Aspect Ratio: 16:9
  • PPI: 72

Website Hero Image Size:
  • Height: 720 pixels
  • Width: 1280 pixels
  • Aspect Ratio: 16:9
  • PPI: 72

Website Banner Size:
  • Height: 250 pixels
  • Width: 250 pixels
  • Aspect Ratio: 1:1
  • PPI: 72

Website Blog Image Size:
  • Height: 630 pixels
  • Width: 1200 pixels
  • Aspect Ratio: 3:2
  • PPI: 72

Website Logo Size:
  • Height: 100 pixels
  • Width: 250 pixels
  • Aspect Ratio: 2:3
  • PPI: 72

Website Favicon Size:
  • Height: 16 or 32 pixels
  • Width: 16 or 32 pixels
  • Aspect Ratio: 1:1
  • PPI: 72

It’s important to consider the area above the fold (the visible part before scrolling) when choosing the size of the image. If the image is important, a larger image size should be used. If the text is important, the size of the image can be sacrificed.

When it comes to choosing the image format to use for the web, there are several options available. JPEG is one of the most common image formats used for images, and it’s a lightweight lossy compression image format. PNG is another popular image format that uses lossless compression and allows for background transparency. GIF is a nifty image file format that can be used for short animated clips with small file sizes.
In conclusion, choosing the right image dimensions, aspect ratios, and file sizes is crucial for creating an impressive website that loads quickly and provides a great user experience. By following the guidelines and recommendations provided in this article, you can ensure that your website images look great and help your website stand out from the crowd.