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Page weight budget Calculator
Compare a page’s weight with its budget and estimate the download time.
Performance & capacityHow it's worked out
- Weight = sum of transferred sizes. Time ≈ bits ÷ bandwidth + a few round trips
- Compressed transfer sizes; HTTP/2 multiplexing
NoteJavaScript costs more than its size suggests because it must be parsed and run. Budget it separately.
Source: web.dev performance budgets; HTTP Archive Web Almanac
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