About HTML Size Analyzer
Measure the HTML response body after transfer decompression, an uploaded file, or the UTF-8 byte count of pasted text. Other assets and headers are excluded. The tool reads the HTML response, not content created after JavaScript runs. URLs are requested through this site’s Cloudflare Function. Private URLs should not be entered.
How to use it
- Enter one public page URL, paste source or choose an HTML file.
- Run the analysis and compare byte and kilobyte counts.
- Reduce unnecessary markup if the document is larger than expected.
Frequently asked questions
Does it include images and CSS?
No. It measures the HTML document only, not all page resources or compressed network transfer.
Why might a URL fail?
The Cloudflare Function can read many public pages. Some sites block automated requests, require login, or return a challenge. Try pasted HTML if needed.