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Page Size Checker: Measure Your Web Page Weight

This free page size checker measures how heavy a web page is. It downloads the page and its main files, adds up HTML, CSS, JavaScript and images, and lists the biggest files that slow your site down.

By Debmedia Technologies LLP · Kolkata, India · Updated

What Is a Page Size Checker?

A page size checker measures how many bytes a web page needs to load. It adds up the HTML document and the files it pulls in, such as stylesheets, scripts and images. The total is often called page weight, and it has a direct effect on loading speed, especially on mobile networks and in places with slow connections.

This page size checker downloads your page the way a first-time visitor would and measures what travels over the network. It then shows which file types are heaviest and which individual files you should fix first.

How to Use This Page Size Checker

  1. Enter a page address, for example example.com.
  2. Press Check page size. The measurement can take up to 30 seconds on heavy pages.
  3. Read the total weight and the checks.
  4. Open the table of file types and the list of the ten largest files.

What a Good Page Weight Looks Like

Total weightVerdict
Under 1 MBLight. Loads fast even on slow connections.
1 to 2 MBGood for most sites.
2 to 5 MBHeavy. Look at the largest files.
Over 5 MBVery heavy. Mobile visitors will wait a long time.

Page weight is only one part of speed, but it is the part you control most easily. For a deeper guide, see the web.dev guide to loading speed.

What Is Measured

  • HTML. The main document, with its transfer size and its size after unpacking.
  • CSS and JavaScript. Files linked in the page, up to 40 files in total.
  • Images. Images in the page source, which are usually the heaviest part.
  • Fonts. Detected when a linked file is served as a font.

The tool reads the page source and does not run scripts, so files that JavaScript loads later, such as ads or lazy-loaded pictures, are not counted. Real weight in a browser can be higher.

How to Make a Page Lighter

Images

Resize them to the size they are displayed at, compress them and use WebP. A single 2 MB photo can outweigh the rest of the page.

Compression

Turn on gzip or Brotli so text files shrink by 60 to 80 percent. Verify it with the header viewer; it shows the Content-Encoding header.

Scripts and styles

Remove plugins and libraries you do not use, minify what is left and load below-the-fold images lazily.

Next Steps

After you make changes, run the page size checker again to confirm the savings. If speed is still poor, measure the server itself with the server status checker, and review how the page appears in search with the meta tag review.

Frequently Asked Questions

There is no fixed rule, but under 2 MB total keeps most pages fast on mobile networks. The median page today is much larger, so lighter is a real advantage.
It is the number of bytes that actually travel over the network, after compression. It is usually much smaller than the file size on disk.
The tool reads the page source and does not run JavaScript, so files that scripts load later, such as ads or lazy images, are not counted. Real weight can be higher.
Compress images and use WebP, enable gzip or Brotli on the server, remove unused CSS and JavaScript, and load below-the-fold images lazily.

Disclaimer: results come from live requests and can change as records and servers change. We cannot guarantee that every answer matches what every visitor sees.