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TOTP Authenticator Test Bench

Generate RFC6238 SHA-1/256/512 codes with a local countdown, explicit otpauth URI and QR import output. Disposable test secrets stay in tab memory.

totp-generatorLOCAL WORKSPACE

Enabling local controls…

Use disposable test secrets. Secrets, URIs and QR images stay in tab memory, never in the URL or browser storage. This is not a production authenticator. Clock and service parameters must agree.

Current code

Review the test secret and parameters, then start. Editing inputs stops the countdown and clears old results.

How to use this tool

Review the labeled controls, use the example, inspect the preview and explicitly copy, download or print the result. Input remains in this tab.

When not to use it

Use disposable secrets only. URI and QR expose the secret; never share them. Nothing is persisted or sent. Local codes do not authenticate against a server; verify clock and service parameters.