SynthPass

High-security password synthesizer

As of June 2026, SynthPass has 48 users and a 5.00/5 rating from 1 reviews in the Workflow & Planning category.

Usersup 11.6 percent+11.6%
48
48
Ratingno change0%
5.00
1 reviews
Reviewsno change0%
1
Version
2.0.2
Manifest V3
90-day change · In the last 90 days this extension 1 version update, changed permissions.

History

4 snapshots

Tracking since Apr 23, 2026.

53.84842.2Apr 23, 2026Jun 12, 2026
View as table
DateUsersRatingReviewsVersion
Apr 23, 2026435.0010.2.9
May 12, 2026535.0010.2.9
Jun 7, 2026435.0010.2.9
Jun 12, 2026475.0012.0.2
Now485.0012.0.2

Changelog

  • Jun 7, 2026
    description
    SynthPass is a different kind of password manager: it is a password synthesizer.
    
    With SynthPass, there is no "vault" that has to be protected from hackers because your passwords are synthesized on the fly, just as you need them. SynthPass-made passwords are always high strength and comprise letters, numbers, and special characters. Passwords for different websites are guaranteed to be totally different.
    
    You never have to change your Master Password. When a website forces you to change its password, simply change the optional serial that is used to synthesize that password. SynthPass will remember the serial, as well as your user ID. Your Master Password will never be stored, and it disappears from memory after five minutes not using it.
    
    And, if you absolutely must use a certain password, SynthPass can use that too! It is encrypted for storage and synced with the browser's own files so no third parties need to be involved.
    
    Unlike conventional password managers, SynthPass 
    - won't pop up and interrupt your flow; it is activated only when you click its icon on the browser toolbar
    - won't store anything secret, only user IDs and optional serials, if you allow it
    - is always available, because it does not have to connect to "the Cloud"
    - makes only strong passwords
    - won't ask you for money
    - won't show ads
    
    SynthPass is based on the WiseHash key-stretching algorithm, which evaluates the information entropy of your Master Password and subjects it to a variable number of rounds of SCRYPT key-stretching. The weaker the password, the more stretching. This forces would-be hackers to spend an inordinate amount of computer time testing weak passwords before they can get to yours. SynthPass displays an accurate measurement of your Master Password's entropy to help you come up with a strong one. This is the same algorithm stretching the user password in PassLok Privacy and PassLok for Email, also in this web store.
    
    When there is no password to be filled, SynthPass displays a box where you can store securely encrypted notes for that particular website. Good place for extra login instructions, your first pet's name, or whatnot. Like everything else, the notes sync with the browser without a need for extra servers.
    
    There's also a button for moving the current page into an isolation cage similar to Incognito Mode, but within the same set of tabs as the regular pages. This is also accessible via the right-click menu.
    
    This is a browser extension, and therefore is poorly supported on mobile devices. There is, however, a web app that includes the same password-making engine and runs well on mobile devices. It can be found at:
    
    https://synthpass.com/app
    SynthPass: The Zero-Vault Password Synthesizer
    
    Conventional password managers are part of the problem. They ask you to trust a "vault"—a centralized database of your most sensitive secrets that lives on a server, waiting to be breached. SynthPass is the solution. It doesn’t store your passwords; it synthesizes them.
    
    ELIMINATE THE TARGET
    With SynthPass, there is no database for a hacker to steal. Your passwords exist only for the split second they are generated, calculated mathematically from the domain name and your Master Key. Because no secrets are stored, there is no central vault for an attacker to find—even if your computer is seized or a server is compromised.
    
    NEW IN v2.0: ENHANCED SOVEREIGNTY
    Version 2.0 introduces a superior synthesis engine for even stronger cryptographic results.
    
    The v2.0 Standard: Our most robust generation logic to date, now set as the default.
    
    Classic Mode Toggle: Total backward compatibility. If you have legacy passwords generated with the original engine, simply check the "Classic mode" box to generate them exactly as before.
    
    CORE ARCHITECTURE
    Master Key Security: Your Master Key is never stored. It resides in volatile memory only as long as you are using it, before a mandatory Security Auto-Wipe purges it after five minutes of inactivity.
    
    WiseHash™ Logic: We don't just hash your key; we "stretch" it. Our WiseHash algorithm evaluates the entropy of your Master Key and applies a variable number of SCRYPT iterations. The weaker the key, the harder the math—forcing hackers to waste years of compute time on simple guesses.
    
    Infinite Serials: When a site forces a password change, don't change your Master Key. Just increment the optional Serial; SynthPass remembers the serial and your User ID locally so your password remains unique and high-strength.
    
    THE VAULT (LOCAL-ONLY STORAGE)
    For data that cannot be synthesized, SynthPass provides a secure Vault.
    
    Encrypted Notes: Save site-specific instructions, security answers, or research notes.
    
    Specific Passwords: If you must use a certain non-synthetic password, store it here.
    
    Zero Cloud: Everything in the Vault is encrypted with your Master Key and synced only via the browser’s internal files—never our servers or a third-party cloud.
    
    MOBILE & EXTERNAL ACCESS
    Since the logic is purely mathematical, you can generate your passwords on any device using our secure web apps:
    
    New v2.0 Algorithm: https://privacybar.net/mobile (Password tab).
    
    Classic Algorithm: https://synthpass.com/app.
    
    UPGRADE TO PRIVACY BAR
    Looking for more than just passwords? Privacy Bar is our comprehensive security suite that includes the full SynthPass 2.0 engine alongside post-quantum encryption, steganography, and secure file management. If you use Privacy Bar, you already have the power of SynthPass 2.0 integrated into your digital sovereignty toolkit.
    
    Stop storing your secrets. Start synthesizing them.
  • Jun 7, 2026
    permissions
    storage, activeTab, scripting, alarms, contextMenus, history
    storage, activeTab, scripting, alarms

Permissions & access

Permissions
storageactiveTabscriptingalarms
Host access
None declared

Screenshots

SynthPass screenshot 1SynthPass screenshot 2SynthPass screenshot 3SynthPass screenshot 4

About

SynthPass: The Zero-Vault Password Synthesizer

Conventional password managers are part of the problem. They ask you to trust a "vault"—a centralized database of your most sensitive secrets that lives on a server, waiting to be breached. SynthPass is the solution. It doesn’t store your passwords; it synthesizes them.

ELIMINATE THE TARGET
With SynthPass, there is no database for a hacker to steal. Your passwords exist only for the split second they are generated, calculated mathematically from the domain name and your Master Key. Because no secrets are stored, there is no central vault for an attacker to find—even if your computer is seized or a server is compromised.

NEW IN v2.0: ENHANCED SOVEREIGNTY
Version 2.0 introduces a superior synthesis engine for even stronger cryptographic results.

The v2.0 Standard: Our most robust generation logic to date, now set as the default.

Classic Mode Toggle: Total backward compatibility. If you have legacy passwords generated with the original engine, simply check the "Classic mode" box to generate them exactly as before.

CORE ARCHITECTURE
Master Key Security: Your Master Key is never stored. It resides in volatile memory only as long as you are using it, before a mandatory Security Auto-Wipe purges it after five minutes of inactivity.

WiseHash™ Logic: We don't just hash your key; we "stretch" it. Our WiseHash algorithm evaluates the entropy of your Master Key and applies a variable number of SCRYPT iterations. The weaker the key, the harder the math—forcing hackers to waste years of compute time on simple guesses.

Infinite Serials: When a site forces a password change, don't change your Master Key. Just increment the optional Serial; SynthPass remembers the serial and your User ID locally so your password remains unique and high-strength.

THE VAULT (LOCAL-ONLY STORAGE)
For data that cannot be synthesized, SynthPass provides a secure Vault.

Encrypted Notes: Save site-specific instructions, security answers, or research notes.

Specific Passwords: If you must use a certain non-synthetic password, store it here.

Zero Cloud: Everything in the Vault is encrypted with your Master Key and synced only via the browser’s internal files—never our servers or a third-party cloud.

MOBILE & EXTERNAL ACCESS
Since the logic is purely mathematical, you can generate your passwords on any device using our secure web apps:

New v2.0 Algorithm: https://privacybar.net/mobile (Password tab).

Classic Algorithm: https://synthpass.com/app.

UPGRADE TO PRIVACY BAR
Looking for more than just passwords? Privacy Bar is our comprehensive security suite that includes the full SynthPass 2.0 engine alongside post-quantum encryption, steganography, and secure file management. If you use Privacy Bar, you already have the power of SynthPass 2.0 integrated into your digital sovereignty toolkit.

Stop storing your secrets. Start synthesizing them.

Technical

Version
2.0.2
Manifest
V3
Size
86.33KiB
Min Chrome
88
Languages
1
Featured
Yes

Metadata

ID
khkpfnickpejcjhajmkljfadcaegphkd
Developer ID
u44ee8c9c3a2360b9b35198d5f2005327
Developer Email
[email protected]
Created
Sep 15, 2018
Last Updated (Store)
May 23, 2026
Last Scraped
Jun 12, 2026

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