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OfflinePass is a deterministic password manager that turns one Master Key into a unique, secure password for every site — entirely in your browser. No server. No vault. No sync. Lose your device and you can recover every password on a fresh install just by remembering one phrase. ────────────────────────────────────────── THE WHOLE ALGORITHM, ON ONE SCREEN ────────────────────────────────────────── msg = "github.com" + "|" + "you@example.com" + "|2026|0" mac = hmac-sha256(masterKey, msg) password = base58(mac).slice(0, 16) // → 0$87booSaeaKYnhgEq That's it. Three inputs (host, identity, year), one HMAC-SHA256, base58 encoded and truncated to 16 characters. Same Master Key + same site + same identity always produces the same password — on any device, on any version, forever. • No server, ever Every password is computed locally. Open the network tab and watch — there are zero requests after the popup loads. • Nothing to back up No vault, no sync, no database. The only secret is your Master Key, and only you remember it. • Deterministic Forget syncing across devices. Type the same Master Key on a fresh install and you instantly recover every password. • Audit the math, not us HMAC-SHA256 + Base58. ~94 bits of entropy in the truncated output. The whole thing is a few lines of TypeScript you can read in one sitting. Source on GitHub: github.com/sireto/offlinepass • Zero tracking No analytics, no fingerprinting, no telemetry, no cookies you didn't ask for. Apache 2.0 license, free for any use. 1. Click the OfflinePass icon (or press Ctrl/Cmd+Shift+F). 2. Type your Master Key. 3. The current site is filled in automatically; type your username. 4. The 16-character password appears in the result card. Click copy. That's the whole flow. Same site, same identity, same Master Key → the same password every time. ────────────────────────────────────────── OPTIONAL: SAVE YOUR MASTER KEY WITH A PIN ────────────────────────────────────────── If you don't want to retype your Master Key on every visit, you can encrypt it locally with a PIN: • Key derivation: PBKDF2-HMAC-SHA256, 250,000 iterations, 16-byte random per-MSK salt. • Cipher: AES-GCM with a 12-byte random IV. The auth tag is what tells us a wrong PIN was entered — there is no separate hash to crib against. • Storage: localStorage on this device only. Nothing is synced or sent over the network. Enter the wrong PIN and the GCM auth tag fails — the ciphertext is useless without it. PINs are short, so a long PIN (or no PIN at all) is stronger; we explain the trade-off in SECURITY.md. This extension requests one permission: • activeTab — used only to read the URL of the tab where you opened the popup, so OfflinePass can pre-fill the host field. The URL never leaves your browser. OfflinePass collects nothing. There is no analytics endpoint, no fingerprinting, and no remote configuration. The extension makes zero network requests after install. The full source is published under Apache 2.0 — verify it yourself.
CrecenTech Utilities
It's a simple chrome extension which will hide password showing method.It will also hide code inspection with all ways like short cut keys etc.
Cardano Priority Wallet
Chrome extension for fee-based transaction prioritization on Cardano, ensuring fairness. This Chrome extension is designed for users of the Cardano blockchain network, providing them with a powerful tool to prioritize transactions with high fees, ensuring prompt and efficient processing. By internally optimizing transaction parameters, such as fees, the extension aims to accelerate confirmation times on the Cardano blockchain. It achieves this by analyzing transaction data and dynamically adjusting fee structures and execution units increasing the likelihood of transactions being promptly mined and added to blocks. The primary function of the wallet lies in its role as an intermediary between transactions processed through a Cardano decentralized application (DApp) and the user's Cardano wallet. Typically, these transactions are executed with fixed execution-units, leading to higher costs in cases where a smaller execution unit will suffice. However, the intercepted transaction undergoes thorough analysis, with a focus on optimizing its execution units. In terms of fees, a slight increment is applied to enhance the likelihood of miners on the Cardano blockchain prioritizing its mining. This is achieved by adding an extra output based on the selected network and balancing the transaction. Traditionally, transactions with higher fees tend to be larger in scale. Nonetheless, by utilizing this priority wallet, even smaller transactions can feature fees substantial enough to garner faster attention from miners. It's important to note that this wallet doesn't involve a seed phrase for generating public and private keys; rather, it functions as a means to expedite the confirmation process of user transactions within the Cardano blockchain. Additionally, the extension enhances usability and user experience by fetching and displaying the wallets they have installed in their browser, allowing for swift wallet selection. Favicon of the visited website is displayed when activated. This visual indicator helps users confirm their selection of the preferred wallet from the intended website, making the process more intuitive and visually recognizable. The extension supports six popular Cardano wallet extensions: Nami, Eternl, Flint, Yoroi, Typhon, and Lace. Users can choose their preferred wallet extension for executing transactions. Additionally, the extension is compatible with the Cardano mainnet and two testnets (preprod and preview), with these selections stored in the user's main browser's localStorage. Based on the user's choices, the extension can generate an updated and balanced transaction specific to the selected wallet and network. If the user selects a Cardano wallet extension that is not installed in their browser or if there is a network mismatch between the priority wallet extension and the selected cardano wallet extension, an error will be thrown indicating the reason for the issue. To optimize the transaction, the extension makes three specific API calls. Firstly, it adds an extra payment to the original transaction and balances it. Then, it calls the first API to determine the exact fee required for the transaction. If the transaction includes execution unit fields (which indicate the CPU and memory usage required for execution), the extension makes a second API call to calculate the updated execution units after adding the extra payment. Finally, it balances the new transaction with the updated fee and execution units, and the third API call is made to submit the transaction. This browser extension is suitable for both casual users and developers engaged in creating Cardano-based decentralized applications. For developers, it streamlines the process of conducting on-chain tests for smart contracts, facilitating faster iterations and debugging. Meanwhile, general users can take advantage of quicker transaction confirmations in various scenarios such as blockchain auctions or NFT purchases, enhancing their overall experience with Cardano-based applications.
Zero(formerly ID Guard Offline)
Fill passwords safely in browsers with the most secure password manager extension Zero(formerly ID Guard Offline). Autofill your password in browser by scanning QR code with Zero(formerly ID Guard Offline) app on your phone. 1. A QR code will show up when you open a web page with a login form. 2. Open Zero app(not this extension) on your phone and scan the QR code. 3. Choose the account. 4. Your login form on the web page will be filled automatically. When filling password from your phone to the web page, your password is encrypted with a one time encryption key known only by this extension and the app on your phone. It can never be decrypted during the transmission on Internet. Unlike most password manager extensions, this extension does not save any passwords. Your passwords are stored on your smartphone with security chip and sandbox protection. No password can be sent to the browser automatically unless you scan the QR code with the app on your smartphone. That means, no malicious desktop program or website can steal your passwords without your awareness.
My Password Manager
Use My Password Manager Chrome extension to generate strong passwords and securely manage them. Use My Password Manager Chrome extension as a secure password manager to generate strong secrets and manage your credentials securely with on-device encryption. Designed for a clean, focused browsing experience, it helps you create unique, high-entropy logins, organize your information, and safeguard sensitive data. Built as a zero-knowledge encryption tool, your vault is protected locally, giving you full control over everything you store. 🚀 Quick Start Steps 1. Install the extension using the Add to Chrome button 2. Set up your master password 3. Click the “Add new login credentials” 4. Enter your Email / Username, click Generate button (or type your password), then Add 5. Open any webpage with Email / Username and Password fields 6. Copy your login data from My Password Manager when needed Save valuable time with our all-in-one solution 💎 Avoid losing your login information again 💎 Store your data securely on your device 💎 Start using the extension immediately with a simple setup 💎 Reduce the risk of credential leaks 💎 Improve productivity for personal and professional accounts 💎 Generate and store strong secrets with ease Built for Users Who Value Control You decide where your encrypted backups live, when to rotate sensitive data, and how long and strong your master key should be. No company can reset, recover, or read your vault without your master key, giving you complete control over how your information is stored and used. Security and Architecture 🔒 No Account or Signup Required — no registration, no email, no cloud account 🔒 Strong generator for unique, complex secrets 🔒 Industry-leading PBKDF2 + AES-256-GCM encryption 🔒 Zero-knowledge design — your master key is never stored 🔒 Full control over your encrypted vault 🔒 Works as a fully local manager by default, with no required cloud dependency Clean and Focused Experience My Password Manager is designed to support a smooth, distraction-free workflow, keeping your credential management private and under your control. Additional Benefits 💠 Simplifies secure password hygiene for daily browsing 💠 Works with most sites using standard login fields 💠 Simple for non-technical users 💠 Intuitive UI 💠 Built for advanced users who require strict privacy How It Works My Password Manager is a local-first password manager built for users who want direct control over their credentials. All encryption and decryption operations occur on your device, using well-established cryptographic primitives and secure defaults. The extension is designed to minimize attack surface and avoid unnecessary data exposure during everyday use. ❓ Frequently Asked Questions 📌 Does the app access Google Password Manager or my Google account? 🔹 No. It does not read or access Google’s built-in manager or any Google account data. 📌 Is this a safer alternative to Chrome passwords? 🔹 Yes. My Password Manager uses a local, on-device encryption model that differs from Chrome’s built-in password manager and is designed for users who want more direct control over their stored credentials. 📌 Does My Password Manager work offline? 🔹 Yes. Core features — including vault access and secret creation — work offline. 📌 What happens if I reinstall Chrome or reset my browser? 🔹 Resetting or reinstalling Chrome will remove your encrypted vault file. 🔹 Create local encrypted backups if you want a recovery option. 🔹 Use Export Passwords in Main Settings to create backups. 📌 Where is my secret data stored? 🔹 Inside Chrome’s local extension storage as an encrypted file. 🔹 By default, this file stays on your device unless you choose to export, back it up, or otherwise transfer it. 📌 Is there a master password for this password manager? 🔹 Yes. You set a master key to encrypt and unlock your vault. 🔹 Your password data cannot be accessed without it. 📌 What if I forget my master key? 🔹 It cannot be recovered. This is required by zero-knowledge design principles. 🔹 Only the vault owner knows the key — store it securely. 📌 Does the extension require permissions? 🔹 Yes. It requests standard Chrome extension permissions required to support core features such as secure local storage, site-aware credential organization, and optional on-page UI assistance. 🔹 It does not request access to browsing history. 📌 Does the app interfere with browser performance? 🔹 No. Core functionality runs locally and is designed to be lightweight, so everyday use remains fast and responsive. 📌 Who can access my stored password data in this password manager? 🔹 Only you. Without your master key and your device, your vault cannot be decrypted. 🚀 Take the Next Step - elevate your browsing experience while safeguarding your privacy. 👆🏻 Click Add to Chrome and start using My Password Manager for a more private, efficient, and convenient web experience.
