Auto Auth Filler
Auto Auth Filler is a browser extension for Firefox and Chrome. It reads the verification code from your latest Gmail message and fills it into the one-time-code field on the website you are signing in to, so you no longer have to switch to your inbox and copy it by hand.
The purpose of this application
Signing in somewhere often means leaving the page, opening your inbox, copying six digits and coming back. Auto Auth Filler exists to remove that round trip, and does nothing else.
When the extension notices a verification field on a page, it searches your recent Gmail messages for a matching code and enters it. It requests read-only access to Gmail for that single purpose. It does not send email, does not modify your account and has no other function.
- Works on any website. Fields are recognised by their name, label, input mode and surrounding wording, so there is no list of supported sites and no per-site setup.
- Handles the usual code formats: six to eight digits, alphanumeric codes, hyphenated codes, Google's
G-XXXXXXstyle and split single-digit boxes. - Understands German forms as well as English ones.
- Filling can be switched off in the settings. On password fields the extension always waits for a click.
Privacy
Everything happens inside your browser. There is no server, no account and no analytics. Nothing is transmitted anywhere except directly to Google in order to read your own mail.
The extension requests one permission,
gmail.readonly, which is read-only. It
cannot send, delete or change any email. Message bodies are held in
memory only long enough to look for a code, then discarded; they are
never written to disk or logged.
Full details, including the Google API Services Limited Use disclosure, are in the privacy policy.
Installing
The extension is not yet listed in the browser add-on stores. Until then it can be loaded from source, which also requires your own Google Cloud credentials. The setup steps are in the repository's README.