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A page size checker is a tool that allows you to check the size of a webpage in bytes or kilobytes. Page size is an important factor in web performance, as larger pages may take longer to load and may be more difficult for users to download or view on mobile devices.
To use a page size checker, you typically need to enter the URL of the webpage that you want to check, and the tool will return the size of the page in bytes or kilobytes. Some page size checkers may also provide additional information about the page, such as the size of the HTML, JavaScript, and CSS files that make up the page, or the number and size of images and other resources on the page. Page size checkers can be helpful for website administrators and developers to optimize the performance of their websites and to ensure that they are delivering a good user experience.