Blog
Notes from building Catadoc.
The document scanner that admits when it is wrong
No reader of paper is perfect. Catadoc shows nothing rather than guessing, lets you fix any fact in one tap, and learns your shops on the device.
Your documents never leave your phone. Here is how to check.
Catadoc understands documents on the device. No accounts, no telemetry, and a privacy claim you can verify yourself in airplane mode.
One PDF under 2 MB: the visa-portal problem, solved offline
Embassy portals want one PDF under a size limit. Most people solve it by uploading their passports to random websites. Here is the offline way.
Why we built Catadoc
The paper made it into the phone. Its meaning did not. Why we built an on-device document brain instead of another scanner.