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✦ HTML Weight & Response Analysis
Free Page Size Checker
Measure HTML response size, HTTP status, response time, compression, content type and key page structure signals from one simple report.
Performance snapshotHTML response only
KBHTML transfer size and content length
msRequest response time and HTTP status
ZIPGzip, Brotli or other compression detection
Check Webpage HTML Size and Response Time
Enter a public webpage URL to inspect its HTML response size and performance details.
How To Use
Check a Webpage in Three Steps
Run a quick HTML size and response analysis without installing additional software.
Run the size check
The tool retrieves the HTML response and records its size, timing and headers.
Review recommendations
Use the report to identify oversized HTML, missing compression or slow response time.
Why It Matters
Keep HTML Responses Efficient
Large HTML documents can increase transfer time, browser parsing work and rendering delays.
Reduce transfer size
Smaller HTML files generally transfer faster and consume less bandwidth.
Confirm compression
Check whether the server returns Gzip, Brotli, Deflate or no detected compression.
Review markup complexity
Estimate HTML element volume and spot pages with potentially excessive DOM structure.
Common Questions
Page Size Checker FAQs
What does this Page Size Checker measure?
It measures the HTML response body and reports HTTP status, timing, content type, compression and basic HTML structure counts.
Does it measure the complete page weight?
No. Complete page weight also includes images, fonts, CSS, JavaScript, videos and third-party resources.
Why can the Content-Length header differ from the HTML size?
Compression, transfer encoding, redirects and HTTP client handling can cause the received body size to differ from the server's Content-Length value.
What HTML size is considered good?
There is no universal limit, but keeping HTML below 150 KB is a strong target for many pages.
Can a small HTML file still load slowly?
Yes. Server response time, images, JavaScript, fonts, third-party scripts, caching and network conditions also affect loading performance.
Related Tools
Continue Checking the Webpage
Check Webpage HTML Size and Response Time
Run a quick report to review HTML weight, compression, headers and optimization opportunities.