Bandwidth Meter
Fetch a URL and estimate its response size in bytes, KB, or MB.
URL
Enter the resource or page URL to measure.
Result
Estimated download size.
Bandwidth Meter
Fetch a URL and the meter reports the size of its response plus the content type, making it easy to catch bloated HTML, oversized stylesheets or heavy images.
Step by step
- Enter the page or asset URL you want to measure.
- Click Measure and wait for the request to finish.
- Read the formatted size and the content type.
- Repeat for the largest assets on the page to find where the weight sits.
Tips for better results
- Keep HTML responses in the low tens of kilobytes. Markup approaching a megabyte is a red flag.
- Compression matters more than raw size, so check whether your server sends gzip or Brotli before rewriting templates.
- Measure the same URL before and after a change to prove the optimisation actually helped.
Frequently asked questions
Does the meter measure compressed size?
It measures the size of the response body it receives, which is the transfer size when the server compresses the response. Use it as a consistent comparison rather than a lab-grade number.
Can it measure images and stylesheets?
Yes. Any URL that returns a body can be measured, so paste an image or CSS file URL to check its weight.
Why does my result differ from PageSpeed Insights?
PageSpeed measures every request on the page, including third-party scripts. This meter measures one response at a time, so the two numbers answer different questions.
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