Website page size checker

What page size means

Page size, also called page weight, is the total amount of data transferred when a webpage loads. It includes the HTML document, CSS files, JavaScript, images, fonts, video, and any other resources requested by the page. The total size directly affects load time, bandwidth consumption, and performance on slow connections.

Why page weight matters

Heavier pages take longer to download, especially on mobile networks or slower connections. Large resource payloads delay rendering, increase data costs for users, and can hurt Core Web Vitals such as Largest Contentful Paint. Search engines associate faster, lighter pages with better user experience, so excessive page weight can indirectly affect visibility.

What contributes to page size

• Images and media. Uncompressed images, oversized hero images, and autoplay video are common causes of heavy pages.
• JavaScript bundles. Large frameworks and unused library code add significant weight.
• Fonts. Multiple font families and weights increase payload size.
• Third-party scripts. Analytics, ads, and embedded widgets often load additional resources.

Limitations

This tool reports the size observed for a single page load. It does not analyze which specific resources are largest or how they affect rendering. Results can vary depending on caching, compression, and whether the page loads additional content dynamically. Use the total size as a starting point and combine it with resource-level analysis when optimizing performance.