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How It Works

All tools run entirely in your browser. Your data is processed locally and never sent to any server. This page explains the technical details of our client-side architecture.

How It Works

Input
Text or file
Browser Processing
Web Crypto API
Output
Encrypted result
No Upload
Runs locally
No Storage
No logs
Open Source
Code is auditable

Data Flow

Traditional Service
User
Server
Processes data
Database
Stores data
Data accessible to provider
ZeyroVault
User
Your Browser
Runs locally
Output
Stays on device
No data access for provider
Key Difference
Traditional services store your data. ZeyroVault processes everything in your browser.

Local Execution

When you enter data into any of our tools, it is read directly into your browser's memory. All processing happens using the Web Crypto API (for cryptographic operations) or native JavaScript. The results are displayed in your browser window. At no point does your data leave your device or travel over the network.

No Network Requests

After the initial page load, our tools make zero outbound network requests. The code is completely static. You can verify this yourself: open your browser's Developer Tools (F12), switch to the Network tab, and use any tool. You will see no requests being made while you work.

No Persistent State

We do not use localStorage, sessionStorage, cookies, or IndexedDB to store your data. When you close the browser tab or navigate away, all data in memory is immediately released. There is no persistent storage of your inputs, outputs, or any intermediate processing data.

Technical Implementation

Our tools are built as static HTML, CSS, and JavaScript files. The cryptographic operations use the browser's native Web Crypto API, which is implemented in highly optimized C++ code within the browser engine. This provides both security (no external dependencies) and performance (native code execution).

Verify It Yourself

You do not need to trust our claims. You can verify everything:

  • 1Open Developer Tools (F12) and check the Network tab—zero requests
  • 2Verify our claims in DevTools
  • 3Save the page and run it offline—no internet required
  • 4Use a packet sniffer to verify no data transmission
  • 5Inspect the code in DevTools Sources panel
  • 6Review our open source code on GitHub

Why This Matters

Traditional online tools send your data to their servers for processing. Even if they claim to delete it immediately, you have no way to verify this. With our client-side approach, your data never leaves your device, giving you complete control and privacy. This is especially important for sensitive data like passwords, private keys, and personal information.

Zero-Knowledge

Traditional Provider
Knows
  • Your data
  • How you use it
  • Your patterns
  • Access your data
  • Share with third parties
  • Lose in breach
Zero-Knowledge
Does Not Know
  • Your data content
  • Your passwords
  • How you use it
  • Access your data
  • Share what they lack
  • Lose what they don't have
How It Works
Crypto runs in your browser via Web Crypto API. Server delivers static code only.