Practical write-ups on moving files between devices: which method suits which situation, why things go wrong, and how the technology underneath works.
Move photos and files from Android to a Mac without a cable
Android and macOS have no shared equivalent of AirDrop, and the USB cable and Bluetooth no longer work between them. What is left, and what is least hassle.
AirDrop alternatives for Windows, Android and mixed households
AirDrop stops at the edge of Apple's ecosystem. A comparison of what fills the gap for each combination of devices.
Send a video without it being compressed
Messaging apps quietly shrink video before sending. How to spot it and how to send the original file instead.
Same Wi-Fi, but the devices can't see each other: what to check
A checklist for when two devices are on the same network and still do not find each other, from guest networks to IPv4 versus IPv6.
How a file gets from one browser to another without a server
A plain-language look at WebRTC data channels, signaling and encryption — and what a signaling server can and cannot see.
Getting faster transfers on your home network
What really limits transfer speed between two devices at home, and the changes that make a measurable difference.