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Page Size Checker that can be used to know the page size of any specific URL. It is a magic tool that users can use to check website size online. If your website takes longer than usual to load then perhaps you need to work on the size of your website because it can result in high bounce rate as the internet users don’t tend to have the patience to wait for the web page to open. An average small web page size is estimated to be 12 KB and that will load very quickly. The more media on a page, the bigger the page size and the slower it will load. This includes HTML, CSS, Javascript, Embedded videos, images, audio, graphics, flash, and other forms of media will increase your page size, but also represent the largest optimization opportunity.
Modern web protocols compress files during transfer, meaning files are usually smaller to download than their actual or 'raw' size. So any manual optimizations you perform would be on the 'raw' file. Download Page Size is one of the biggest contributors to Page Load Speed, which can directly affect rankings, user experience and conversions.