Page Size / Asset Weight Checker
Estimate page HTML size linked asset counts and rough script style image weight from a URL.
Measure HTML bytes read and summarize linked scripts, styles, images, iframes, and other page assets.
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About this tool
Page Size / Asset Weight Checker is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
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