Estimate desktop page load time and the effect of optimisation measures.
On a fast desktop connection JavaScript execution often exceeds transfer time, so shipping less code matters more than compressing it further. Compression applies only to text resources. Once bandwidth is plentiful, page speed becomes a CPU problem rather than a network one, which changes the optimisation priorities entirely.
Desktop Page Speed
Load time = server time + compressed transfer time + JavaScript execution time
Load time = server time + compressed transfer time + JavaScript execution time On a fast desktop connection JavaScript execution often exceeds transfer time, so shipping less code matters more than compressing it further. Compression applies only to text resources.
Once bandwidth is plentiful, page speed becomes a CPU problem rather than a network one, which changes the optimisation priorities entirely.
This calculator takes 5 inputs: Page weight, Connection speed, Server response time, JavaScript execution time, Saving from compression. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.