QR Code Generator

Yes. QR codes generated here are free to use anywhere, including commercially, with no licence or attribution.

No. These are static QR codes — the data is encoded directly in the image, so they work forever and never expire.

A website link, plain text, an email, a phone number, Wi-Fi credentials, a location and more — anything that fits as text.

On most phones, just open the camera app and point it at the code — a notification appears to open the link or content.

Create a QR code from any text or URL — free.

Finding out how big a thing will be before you make it: how many gigabytes an hour of footage takes, how long a file needs on the connection you have, how large a photo prints before it goes soft, what bitrate fits the budget you were given.

Taking the advertised connection speed as the transfer speed. A 100 Mb/s line is megabits, the file is in megabytes, and the eight-fold difference between them is where most download estimates go wrong — before overhead and contention take their own share.

ASCII code converter, HTTP Status Code Reference and Morse code translator share its section. They are not variants of it — being filed together is not the same as being alike — but that is where to look if this turned out not to be the tool you wanted.

Byte prefixes follow the IEC convention where a kibibyte is 1 024 bytes and a kilobyte is 1 000 — drive makers use the second, operating systems often report the first, and a disk that shrinks on arrival is that gap and nothing else. Print sizing assumes 300 dpi unless you change it.