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The Content Size Inspector by SeoPro.Tools is a free online utility that instantly measures the total size of any webpage — including its HTML markup, CSS stylesheets, and JavaScript files — delivered directly in bytes and kilobytes. Page weight is a critical factor in Core Web Vitals, search engine rankings, and user retention, making this tool essential for anyone serious about web performance.
Using the tool is straightforward: paste any URL into the input field, click Inspect, and within seconds SeoPro.Tools returns the full content size breakdown. No installation, no sign-up required.
Whether you are a web developer auditing a client site, an SEO specialist optimizing for page speed, or a site owner monitoring performance, the Content Size Inspector gives you the actionable data you need — instantly and for free.
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