PwdHash2

By: GWu

Automatically generates per-site passwords if you prefix your password with @@ or F2. Alternate version to original PwdHash add-on to fix issues in Firefox 66 and onwards, added optional more secure hashing algorithm and highlight password field.

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Features & Capabilities

Automatically generates per-site passwords if you prefix your password with @@ or press F2 beforehand. Prevents JavaScript from reading your password as it is typed. The same password will be generated at each subdomain: a.example.com matches b.example.com, a.example.co.uk matches b.example.co.uk, but a.co.uk and b.co.uk are different.

This is based on the Stanford PwdHash add-on, main changes to the original:

Fixed defunct original version, caused by changes in Firefox 66.0.2 keypress event handling
Highlight password field, if active
Added option to change the hash algorithm from HMAC-MD5 to PBKDF2-SHA256 ( based on PwdHash-PoC )
Added option to store a user-specified salt and iteration count.
Added option to use legacy (Stanford PwdHash) mode by Shift-F2 or in the options

Hashed passwords can also be generated at https://gwuk.github.io/PwdHash2/

Development: https://github.com/GWuk/PwdHash2

User Growth & Download Statistics

Add-on

By:

GWu

Daily users:

50 -2

Rating:

5.00

(5)

Version:

1.0.1 Last updated: 2019-12-08

Version code:

4919920

Creation date:

2019-04-22

Risk:

Permissions:

storage

Content scripts matches:

<all_urls>

Size:

107.68KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-17

Compare stats and ranking:

Ranking

# 15,424 ▼ 313

Other rankings

#32 in algorithm keyword 3 ▼ 1

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

GWu

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/pwdhash2/

Website:

https://github.com/GWuk/PwdHash2

User Reviews

by 远离*****, 2025-04-17

by 敬念*****, 2025-03-12

Thanks for updating the original to newer Firefox versions, however you did it.

by Me*****, 2022-04-05

View all user reviews ›

Is PwdHash2 Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

PwdHash2 requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

PwdHash2 has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******