A simple browser-based password vault: store, encrypt, and retrieve credentials locally with a master password.
Password managers solve one of the most persistent problems in personal security: remembering dozens of unique, strong passwords without resorting to reuse or predictable patterns. This Local Password Vault offers a basic, genuinely functional implementation of that idea, running entirely inside your browser, encrypting every stored entry with AES-256-GCM using a key derived from your own master password, and saving the encrypted result only in this browser's local storage on this specific device.
It's important to understand precisely what "local" means here. This is not a cloud-synced password manager, entries you save will not appear if you open this page in a different browser or device. There is also no password recovery mechanism, if you forget your master password, the encrypted vault data becomes permanently unreadable.
When you first unlock the vault with a chosen master password, this tool generates a random salt and uses PBKDF2 with 100,000 iterations to derive a 256-bit AES key. Every time you add, view, or delete an entry, the entire list is re-encrypted using AES-256-GCM before being written back to local storage as an opaque, unreadable blob.
Because your master password is the single point of failure protecting every entry inside the vault, it deserves significantly more care than any individual site password. Choose something long, memorable to you specifically, and never reused anywhere else.
Established password manager applications typically offer cross-device cloud sync, browser autofill integration, secure sharing, and breach monitoring alerts. This tool intentionally doesn't attempt any of that, it's a transparent, single-device utility for a small number of entries.
Because everything is stored in local storage, clearing your browser's site data, using private/incognito browsing, or switching browsers will make your previously saved vault entries permanently inaccessible.
Even in its deliberately basic, single-device form, using this vault to store unique passwords generated by our Password Generator tool is a meaningful improvement over reusing a handful of memorized passwords across many accounts. Think of it as a low-friction starting point that demonstrates the value of proper credential management, before potentially graduating to a full-featured, cross-device password manager as your needs grow.
Since there's no recovery mechanism, consider writing your master password down and storing it somewhere physically secure, such as a locked drawer or safe, entirely separate from any digital storage. This offline backup protects you against the specific failure mode of simply forgetting a password you don't use daily, without introducing the risks of storing it insecurely online.
Periodically review the entries stored in your vault and remove any for accounts you no longer use, keeping the stored list current and manageable rather than letting it accumulate outdated or irrelevant credentials over time.
If convenience across multiple devices becomes more important than the simplicity of this local-only design, treat that as your signal to graduate to a full-featured, actively maintained password manager rather than trying to stretch this tool beyond its intended single-device scope.
No, everything is stored exclusively in this browser's local storage on this one device.
There is no recovery option. The encryption key is derived entirely from your master password and never stored anywhere.
It's genuinely encrypted using AES-256-GCM with a key derived from your master password via PBKDF2.
Your saved vault entries will be lost, since local storage is scoped to a specific browser profile on that specific device.
For a small number of entries on a single device, it works well. For daily use across multiple devices, a dedicated password manager is the better long-term choice.
Idiot Security Tools