Page Size Checker

Analyze webpage HTML size, visible text, images, scripts, stylesheets, headings and links.

The URL must allow browser-based cross-origin requests (CORS).
Your HTML is analyzed locally in your browser.
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About This Page Size Checker

This free Page Size Checker analyzes the HTML document of a webpage and provides useful information about its document size, visible text, images, scripts, stylesheets, headings, links and word count.

The tool is designed to help website owners, developers, bloggers and SEO professionals understand the structure and approximate HTML weight of a webpage.

What Does Page Size Mean?

Webpage size, also called page weight, refers to the amount of data required to load a webpage. HTML is only one part of total page weight. CSS, JavaScript, images, fonts and other resources can also contribute to the final amount of data transferred by a browser.

What Does This Tool Measure?

  • HTML document size.
  • Visible text size.
  • Text-to-HTML ratio.
  • Number of images.
  • Number of JavaScript blocks or files.
  • Number of stylesheet resources or style blocks.
  • Visible word count.
  • H1, H2 and H3 heading counts.
  • Internal and external link counts.

How To Use

  1. Enter a complete webpage URL.
  2. Click Check URL.
  3. Wait for the webpage HTML to be retrieved.
  4. Review the page size analysis.
  5. Review the recommendations.
  6. If the URL cannot be fetched because of CORS restrictions, paste the HTML source into the fallback box.
  7. Click Analyze HTML.

Why Can URL Checking Fail?

Modern browsers apply cross-origin security rules. A website can prevent another website from reading its HTML through JavaScript. This is commonly known as a CORS restriction.

When this happens, the tool cannot bypass the browser security policy. Use the HTML source fallback instead.

Important Difference Between HTML Size and Page Weight

The HTML document size reported by this tool should not be interpreted as the complete network page weight. A webpage may load additional CSS, JavaScript, images, fonts and other resources after the HTML document is received.

Therefore, this tool intentionally reports HTML-related measurements rather than pretending to calculate an exact total page weight when the browser cannot access all resources.

Frequently Asked Questions

What is webpage size?

Webpage size is the amount of data associated with loading a webpage. HTML, CSS, JavaScript, images, fonts and other resources can all contribute to page weight.

Does this tool measure the complete page weight?

No. The tool primarily analyzes the HTML document available to the browser. It does not claim to measure every network resource loaded by a webpage.

Why is HTML size important?

Large HTML documents can require more data to transfer and process. Removing unnecessary markup and duplicated content can improve efficiency.

Why can Check URL fail?

Some websites block browser-based cross-origin requests using CORS. In that situation, paste the webpage HTML source and use Analyze HTML.

Does this tool upload my HTML?

No. HTML pasted into the fallback checker is processed locally in your browser.

Is this Page Size Checker free?

Yes. The Page Size Checker is free to use and does not require registration.