Website page size checker
Page size checker approximates how heavy a URL is to download, including referenced resources when the tool can discover them. Large pages hurt mobile users and Core Web Vitals budgets.
Use it after redesigns, when adding scripts, or comparing template options. Pair with TTFB checker and Brotli checker to see both weight and compression.
Performance and availability go together — monitor critical landing pages with UpFo so slow does not become silent downtime.
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