All the tools
Every one of these runs inside your browser. Nothing is uploaded, nothing is stored, and there is no account. Three of them can prove they read the number correctly.
All six run in the browser. The app does the same from your camera, offline, with a history of every scan.
Numbers only
Strip everything that is not a digit. The most accurate option when you only want the number.
Screenshot to text
The whole capture as plain text — with an honest note on when your phone already does it.
IMEILuhn ✓
Fifteen digits, checked against the Luhn digit built into them.
VINmod-11 ✓
Seventeen characters, where the ninth verifies the other sixteen.
IBANmod-97 ✓
Validated with the same mod-97 arithmetic your bank uses.
Utility meter
Digital and drum registers. It reads every digit it sees; the page explains which ones your supplier wants.