PassLok Universal icon

PassLok Universal

by Francisco Ruiz · passlok.com · Privacy & Security
Established publisherManifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

High security encryption for any email, plus Passwords.

Users
181
+16 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#66K
#56K among extensions
Version
1.0
updated 29 May 2026

Users

monthly, 3 years
1096181Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 181 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
001Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About PassLok Universal

⚠️ NOTICE: PASSLOK UNIVERSAL HAS EVOLVED INTO PRIVACY BAR ⚠️ This legacy "Universal" extension is no longer actively updated for new web page layouts. To get the latest security features, cross-platform compatibility, and seamless real-time page interactions, please install our flagship Chrome Extension: Privacy Bar. Privacy Bar contains the exact same serverless, battle-tested XSalsa20 encryption and SynthPass password management engines you trust from PassLok, but features a massively upgraded, actively maintained interface that integrates effortlessly into your favorite webmail and texting apps. Privacy Bar is fully backward-compatible with all your existing PassLok contacts and locks. 👉 Search the Chrome Web Store for "Privacy Bar" or visit privacybar.net to upgrade. ORIGINAL DESCRIPTION (LEGACY): TAKE PRIVACY INTO YOUR OWN HANDS Easy, end-to-end secure encryption for email and other web-based communication systems, plus real-time chat, that does not rely on servers and is therefore immune to hacking or government intervention. Very similar to PassLok for Email, also in this store, except that it supports any Email Service, including Gmail, Yahoo, Outlook online, and many more. PassLok Universal is also a full-fledged password manager which, unlike most other managers out there, does NOT involve a server, yet it syncs between computers. Its password management engine is that of SynthPass, also in this store. And if you're not exchanging messages or filling passwords, clicking the PassLok Universal icon will allow you to save secure notes on any website, or to load it into a special "Incognito" page that loads within the normal Chrome window. This function, also available via the right-click menu, is borrowed from Page Cage, also in this store. --PassLok Universal is incredibly easy to use-- To encrypt a message or file, just click the PassLok icon when the email service's Compose or Reply window is visible. A popup will take your private message and encrypt it with the click of a button. Then you can send it out like any other message, or as an attachment. To decrypt it, display the encrypted message and click the PassLok icon. A popup will show the decrypted message or file immediately, if there is one. PassLok asks you for your Password only once. It can be anything you want, so you can actually remember it. PassLok will evaluate its strength and compensate for its weakness by lengthening the computations. It won't be stored or sent anywhere, and PassLok will forget it after five minutes of inactivity. If you want to change your Password, go ahead and start using a new one when PassLok asks you for it. You may be asked for the old Password if PassLok can't decrypt something, but otherwise that's all you'll have to do. --Lots of power in a slender package-- You can use either of these five encryption modes, by just clicking a button: 1. Signed mode: encrypted messages can be decrypted again, so long as the recipients supply their authentic passwords. Recipients are also assured that the message was encrypted by the sender. 2. Read-once mode: after a few encrypted messages have been exchanged they can no longer be decrypted by anyone, even if they supply the correct passwords. 3. Chat mode: you can make invitations which, when decrypted by the recipients, open a webRTC real-time chat session where participants are directly connected to one another. The chat session includes text, files, audio, and even video. 4. Anonymous mode: for when you are using a dummy email account or otherwise do not wish to reveal your identity. 5. Shared password mode: most secure when you have previously shared a secret with the recipients PassLok Universal allows you to encrypt files and images as well. Just load them with a toolbar button. You can also encrypt them separately and load them as regular attachments. For the very paranoid (and who isn't these days?), PassLok Universal includes four special features: 1. Encrypt to image: the message is encrypted into an image you supply and then attach to your email, so the presence of a hidden message cannot be detected even by computer analysis. 2. Concealed mode: the encrypted message does not look encrypted, but actually looks like normal text. PassLok still detects it and decrypts it normally, though. 3. Invisible mode: the encrypted material cannot be seen at all. It is hidden in the space between the lines of an otherwise normal message. 4. Hidden msg: there is a hidden message in addition to the regular message, and it is encrypted by a separate key. The hidden message is completely undetectable to those who don't know it exists. Images also can contain hidden messages. --State-of-the art security-- PassLok is based on the NaCl encryption engine, which uses 255-bit standard elliptic curves vetted against weaknesses by experts. On top of that, it uses the 256-bit XSalsa20 symmetric cipher, a high-performance, open source algorithm, which has been scrutinized by experts for nearly a decade without any practical weaknesses being found. The image-encryption part of PassLok, developed in-house but open-source, has recently been shown to be much harder to detect than F5, the champion steganography tool until now. PassLok does not use servers that might eventually compromise your private data. All encryption is done client-side. All data sent to the email server is encrypted, and they don't have the password that decrypts it. With PassLok, you can actually SEE that that your messages have been encrypted. You can also see the code. PassLok hides nothing from you. --PassLok Universal may be the only password manager you'll ever use-- It's a different kind of password manager: it is a password synthesizer. With PassLok Universal, there is no "vault" that has to be protected from hackers because your passwords are synthesized on the fly, just as you need them. PassLok-made passwords are always high strength and comprise letters,…

Growth

WindowUsersChangeRatingsRating
7 days−20−10.0%00.00
30 days+16+9.7%00.00
6 months+108+147.9%00.00
1 year+116+178.5%00.00

Chrome Web Store search rankings

Where PassLok Universal appears when people search the store, with the 30 day change
Search phrasePosition30 days
encrypt#45+1

Version history

8 versions recorded
1.027 Nov 2024
0.5.1025 Mar 2023
0.5.813 Oct 2022
0.5.721 Apr 2022
0.5.613 Aug 2021
0.5.53 Oct 2020
0.5.423 Jul 2020
0.5.3.114 May 2020

Details

Category
Privacy & Security
First seen
14 May 2020
Size
224 KB
Languages
en-US
Pricing
Free
Privacy policy
sites.google.com
Extension ID
lbmlbnfgnbfppkfijbbpnecpglockled

Permissions and risk

Low riskimpact 1, likelihood 2
Permissions
storageactiveTabscriptingalarmscontextMenushistory

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