Byte sizes

Is that 1.5 MB or 1.5 MiB, and how long does it take on 4G?

The two definitions of a kilobyte side by side, because the four percent between them is the gap between the budget you set and the one your tooling reports.

size unit

1500000 bytes The exact count, before anybody rounds it to a unit.

ready to paste

kB, 1000 bytes 1500
KiB, 1024 bytes 1464.8438
MB, 1000 kB 1.5
MiB, 1024 KiB 1.4305
GB 0.0015
GiB 0.0014
on 4G, 1.6 Mbps 7.5s
on slow 3G, 400 kbps 30s

how to use it

Type the size and pick which unit it is in.
Read every other unit beside it - the decimal and the binary ones are both there.
The transfer rows are at throughputs a mid-range phone actually gets, not at the headline figure.

written about at length

layout 4 min Why srcset keeps picking the wrong image The sizes attribute is a promise about layout, made before layout exists. Get it wrong and a 200px avatar downloads the 1600px file on every device.

what this page cannot do

The extension measures the real transferred size of a page, compressed, by resource type, which is the number this converter is usually being fed second-hand.

Page weight in the panel What did this page actually cost to open?

Add LoupeKit

TWO BUILDS 9 browsers

Chrome from the Chrome Web Store Firefox from addons.mozilla.org Edge from Microsoft Edge Add-ons Brave takes the Chrome build Opera takes the Chrome build 4 more the Chrome build

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