mini authenticator

minimal open source authenticator that never store your secret keys

As of May 2026, mini authenticator has 1,000 users and a 4.50/5 rating from 6 reviews in the Workflow & Planning category.

Usersno change0%
1.0K
1,000
Ratingno change0%
4.50
6 reviews
Reviewsno change0%
6
Version
1.0.2
Manifest V3

Permissions & access

Permissions
None declared
Host access
None declared

Screenshots

mini authenticator screenshot 1mini authenticator screenshot 2mini authenticator screenshot 3

About

## Features

- no special permission need: we don't read / write your web pages
- simple, single-purpose: just paste your key and we generate the time-base onetime password(TOTP) for two factor aurthentication(2FA)
- secure: we do **NOT** store your keys in any places (cookies, chrome storage, cloud ... etc)
- offline: no sensitive data transmitted over the internet
- open source: everyone can check the source code integrity

## How to use

🎬 https://youtu.be/64P0G7dOpKY

1. click on the extension button
2. paste your secret key
3. get your 2FA passcode 🎉

## Motivation

I've used authenticators that are packed with features. They allow you to save your secret keys, sync them across different devices through the internet, also import/export the keys by QRCode. If you are looking for tools like that, I recommend https://authenticator.cc , it's handy, open source and well documented 👍

However, password managers such as Bitwarden, Apple Keychain ... etc already did a very good job in storing and syncing keys across devices. I want to rely on them in secret key management, and let the authenticator extension do only one thing - generate TOTP for 2FA, nothing more.

This is where Mini Authenticator comes in. It designed with a "less is more" philosophy in mind. I cut all functionalities that already handled by password managers, and only perform the pure mathematical calculation of TOTP. So it doesn't require storage, read/write your web pages, internet access, special permissions... etc. And most importantly, it's open source, so everyone can inspect and help improving it in future.

I agree that this extension is not for everyone, but only those already using password mangers to manage their secret keys, also those who concern about chrome extension permissions and abilities.

## Need Help?

Visit the project repository:

https://github.com/hoishing/mini-authenticator

for technicial details. You may also open issues in the project repo, or ping me on Twitter https://twitter.com/hoishing

Technical

Version
1.0.2
Manifest
V3
Size
70.61KiB
Min Chrome
88
Languages
1
Featured
No

Metadata

ID
nmhjblhloefhbhgbfkdgdpjabaocnhha
Developer ID
ubabfcbeb3c081bc92d64a861428a3a31
Developer Email
[email protected]
Created
Oct 4, 2022
Last Updated (Store)
Oct 6, 2022
Last Scraped
May 31, 2026
Website
Privacy Policy

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Data sourced from the Chrome Web Store · last verified May 31, 2026.