Type a code and get the airport; type a city and get its codes — 170+ of the world's major hubs, embedded so the answer is instant and works in airplane mode, which is exactly where you'll want it.
170+ major international hubs, embedded — search works instantly and offline. Codes on boarding passes live here; crop dusters don’t.
Set what you want and the result appears as you go. Nothing needs uploading because there is nothing to upload — you are describing what to make, not sending us anything.
Your browser does all the work locally, using your own operating system where randomness is involved. Nothing is requested from a server, so nobody else has a copy of what you made.
The answer appears on this page as you go. There is nothing to download, because the answer IS the page — screenshot it or write down what matters. Nothing is kept — refresh the page and it’s gone, so take what you need before you leave.