Quack!
Encrypt your messages anywhere on the web with post-quantum cryptography
As of June 2026, Quack! has 3 users in the Privacy & Security category.
Usersno change0%
3
3
Ratingno change0%
—
— reviews
Reviewsno change0%
—
Version
0.1.0
Manifest V3
History
4 snapshotsTracking since Apr 16, 2026.
View as table
| Date | Users | Rating | Reviews | Version |
|---|---|---|---|---|
| Apr 16, 2026 | 3 | — | — | 0.1.0 |
| Apr 27, 2026 | 3 | — | — | 0.1.0 |
| May 24, 2026 | 3 | — | — | 0.1.0 |
| Jun 3, 2026 | 4 | — | — | 0.1.0 |
| Now | 3 | — | — | 0.1.0 |
Permissions & access
- Permissions
- storageclipboardWriteactiveTabsidePanel
- Host access
- <all_urls>
Screenshots
About
🦆 Quack — Encrypt the web itself. Want private conversations but can't get everyone to switch to Signal? Quack lets you send encrypted messages on ANY website — YouTube comments, Twitter DMs, Reddit posts, anywhere you can type. HOW IT WORKS • Type "Quack://" in any text field to open a secure composer • Write your message, hit encrypt, paste the ciphertext • Recipients with Quack automatically see the decrypted message • No one else can read it — not the platform, not hackers, not anyone WHY QUACK? ✓ No app switching — Use the sites you already use ✓ Quantum-resistant — ML-KEM-768 + AES-256-GCM cryptography (NIST approved) ✓ Wallet-grade security — Master password, auto-lock, encrypted vault ✓ Stealth mode — Hide who you're messaging from observers ✓ Group encryption — Share keys with trusted contacts ✓ Zero tracking — 100% client side PERFECT FOR • Private conversations on public platforms • Sharing sensitive info where others might see • Groups who want secure communication without changing apps • Anyone who values privacy but lives on the open web Your keys never leave your device. Your messages stay yours. Welcome to the encrypted web. Open-source at https://github.com/0xneves/quack
Technical
- Version
- 0.1.0
- Manifest
- V3
- Size
- 286KiB
- Min Chrome
- 88
- Languages
- 1
- Featured
- No
Metadata
- ID
- pobalangfolojonmdphagkcmohfnbhhn
- Developer ID
- u63dfffd255ff3aa5c5e2304a4cde4fa0
- Developer Email
- [email protected]
- Created
- Feb 11, 2026
- Last Updated (Store)
- Feb 11, 2026
- Last Scraped
- Jun 3, 2026
- Website
- —
- Support URL
- —
- Privacy Policy
- https://github.com/0xneves/quack/blob/develop/PRIVACY.md
Similar extensions
Alternatives to Quack!, ranked by description similarity.
Cryptext
Encrypt and decrypt text on any webpage with AES-256 encryption. Perfect for secure messaging and data protection
6
Majik Message
Encrypt and decrypt messages on any website. Secure chats with keypairs and seed-based accounts. Open source.
—
Encryptify - Secure Encryption
Encrypt & decrypt text securely in your browser with AES-256. No data collection, fully offline.
4
Twitter Crypt
Encrypt and decrypt tweets with a shared key
1
NoteBurner
Send self-destructing encrypted messages directly from any webpage
4
KyberLock
Quantum-proof crypto for everyone
5
MEGA - Secure Texting
A powerful extension to share data securely across multiple popular messaging platforms.
8
★ 5.0
Cyqur
Secure secrets storage
243
★ 5.0
Data sourced from the Chrome Web Store · last verified Jun 3, 2026.