Page Size Checker
Estimate page weight from the HTML document, linked resources, known content lengths, largest assets, and performance budget warnings.
Free Website Page Size Checker
Page weight affects load speed, hosting bandwidth, search performance, and conversion rate. This checker scans the HTML and linked resources to estimate how heavy a page is before a full browser audit.
What this page size tool measures
The scan measures HTML size, linked resource count, known content-length values, largest detected resources, and totals by resource category.
Why page weight matters
Large pages take longer to load, especially on mobile networks. Slow pages can reduce conversion rate, increase bounce rate, and make acquisition spend less efficient.
Frequently Asked Questions
Is this the same as a Lighthouse audit?
No. This is a lightweight server-side scan of HTML and linked resources. Lighthouse runs a browser and measures more detailed runtime performance metrics.
Why are some resource sizes unknown?
Some servers do not return content-length headers for resources, especially when compression or streaming is involved.
What is a good page size?
There is no universal number, but many marketing pages should aim to stay below 1 to 2 MB of critical transfer where possible.
Can page size affect conversions?
Yes. Heavier pages often load slower, and slower pages can increase abandonment before users interact with the site.
Can Swetrix monitor performance after launch?
Yes. Swetrix includes performance monitoring so you can track real user performance alongside traffic and conversion data.
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