OTPAuth URI Builder
OTPAuth URI Builder — runs 100% in your browser. No data is uploaded; nothing leaves your device.
Reach for OTPAuth URI Builder whenever you need to work with 2FA and TOTP codes. Developers testing 2FA flows, users migrating authenticator apps and teams documenting onboarding use it to work with TOTP codes and enrolment data safely and instantly.
How to embed OTPAuth URI Builder on your website
Add this free tool to your own site, blog or intranet — it's 100% free to embed. Paste this snippet where you want the tool to appear; it loads a clean, self-contained version with no ads or navigation.
<iframe src="https://tooljolt.com/embed/otpauth-uri-builder" title="OTPAuth URI Builder" width="100%" height="640" style="border:1px solid #e5e7eb;border-radius:12px" loading="lazy"></iframe>
About OTPAuth URI Builder
OTPAuth URI Builder is a free online two-factor authentication tool that lets you oTPAuth URI Builder. It runs entirely in your browser — no sign-up, no uploads and nothing ever sent to a server — so it is fast, private and safe to use with sensitive data. Whether you are a developer, security professional, student or just curious, OTPAuth URI Builder gives you an instant, reliable result with zero setup.
How to use OTPAuth URI Builder
- 1Enter your Base32 secret or 2FA details into OTPAuth URI Builder.
- 2The current code and countdown update live.
- 3Use the code or copy the enrolment data.
- 4Everything stays on your device.
Why use OTPAuth URI Builder?
- ✓100% free with no sign-up, accounts, watermarks or usage limits
- ✓Runs entirely in your browser — your input never leaves your device, ideal for confidential security data
- ✓Compatible with Google Authenticator, Authy, 1Password and more
- ✓Standards-based TOTP/HOTP (RFC 6238 / 4226)
- ✓Works on any device with a modern web browser, online or offline
Frequently asked questions
Will codes from OTPAuth URI Builder work with Google Authenticator and Authy?+
Yes. OTPAuth URI Builder follows the standard TOTP/HOTP specs (RFC 6238/4226) used by Google Authenticator, Authy, 1Password, Microsoft Authenticator and most 2FA systems.
Should I generate live 2FA codes on a website?+
For real accounts, keep your secret in a dedicated authenticator app on your phone. OTPAuth URI Builder is ideal for testing, debugging and learning how TOTP works — and your secret never leaves your browser.
Is OTPAuth URI Builder free to use?+
Yes. OTPAuth URI Builder is 100% free with no sign-up, no account, no usage limits and no watermarks. Use it as often as you like.
Does OTPAuth URI Builder upload my data to a server?+
No. OTPAuth URI Builder runs entirely in your browser using JavaScript — nothing you type or upload ever leaves your device. That makes it safe to use with sensitive or confidential security data.