Conditional JavaScript - JavaScript - Dev Tips

This is a good round-up of APIs you can use to decide if and how much JavaScript to load. I might look into using storage.estimate() in service workers to figure out how much gets pre-cached.

How Web Content Can Affect Power Usage | WebKit

The way you build web pages—using IntersectionObserver, for example—can have a direct effect on the climate emergency.

Webpages can be good citizens of battery life.

It’s important to measure the battery impact in Web Inspector and drive those costs down.

Battery Status readout as a privacy risk

The security research that went into improving the spec for the Battery Status API. This is why it’s so important that the web holds itself to high standard.

Even most unlikely mechanisms bring unexpected consequences from privacy point of views. That’s why it is necessary to analyze new features, standards, designs, architectures - and products with a privacy angle. This careful process will yield results, decrease the number of issues, abuses and unwelcome surprizes.

Mobile Battery Performance

This is my short explanation of Remy’s explanation of a BBC news article which is an explanation of an academic paper about battery performance of mobile devices when accessing websites.

USBCell Batteries

You've seen stacks of fun but utterly useless USB-friendly peripherals, so how about we show you something practical for a change? Introducing USBCells, pioneering batteries that are recharged via (yes, you guessed it) USB.

An Interesting Way of Showing Battery Status

The screen of this mobile phone looks like a glass of water. The amount of water shows the battery life. The phone has a built in motion sensor to keep the water level.