Will it fast-charge my Pixel?

Yes. It supports USB-C Power Delivery up to 45W, which covers the top charging rate of recent Pixel phones and the Pixel Tablet. Older Pixels will draw less, capped by the phone itself.

Does it work with non-Google phones?

It will charge any USB-C phone that follows the Power Delivery standard, but many non-Pixel phones cap at lower wattages or use their own fast-charge protocol. Expect standard speeds on those.

Yes, the charger comes with a USB-C charging cable in the box.

The 100–240V input covers most countries. You still need a plug adapter for local outlets, since the prongs are fixed.

Is it worth it over a cheaper 30W charger?

If you have a Pixel phone or Pixel Tablet that charges faster above 30W, the extra headroom helps. For older or slower-charging devices, a smaller 30W brick does the same job.