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OTP Code Generator
Generate digit strings for one-time-code interface tests, with explicit limits on what the generator does.
About this tool
When to use it
Generate digit strings for one-time-code interface tests, with explicit limits on what the generator does.
How to use it
Choose 4–10 digits and a batch count, generate codes, and copy the needed values into a test fixture. Preserve leading zeros by treating each code as text.
Guide updated . Examples checked against this implementation.
Worked examples
A six-digit code shape
Input
Digits: 6; How many: 1Expected output
Exactly six digits from 0–9, possibly beginning with zeroThis is a format expectation rather than a fixed code. A fresh value is drawn on each generation, and repeated values remain possible.
Errors and unsupported input
A leading zero disappears after importStore codes as strings rather than numeric spreadsheet cells or integers. The length is part of the input format.
Continue this workflow
- Token Generator: Generate a larger alphabet when the field does not require digits only.
Questions
Frequently asked questions
Does the word OTP mean this code will expire?
Not by itself. Expiry and one-time acceptance require server-side state and verification rules that this generator does not provide.