🔒 Privacy Overview
DevTools Pro is built with privacy-first principles. We believe your data is yours, and our job is to provide powerful developer tools without compromising your privacy.
The Bottom Line: DevTools Pro does not collect, store, transmit, or track any personal information. Everything you do with this extension stays on your computer, in your browser, offline.
What We Don't Do
- ❌ Never send your data to any server
- ❌ Never track your activity or browsing behavior
- ❌ Never store sensitive information in the cloud
- ❌ Never sell or share your data
- ❌ Never read your browser history, tabs, or other extensions
- ❌ Never make external network requests (except for optional clipboard operations)
- ❌ Never use analytics, cookies, or third-party trackers
What We Do
- ✅ Process JSON, HTML, and cryptographic data entirely in your browser
- ✅ Store your theme preference (dark/light mode) locally in your browser
- ✅ Use only the permissions necessary for the extension to function
- ✅ Maintain transparent, honest communication about what the extension does
- ✅ Respect your browser sandbox and system security
📊 Data Collection & Processing
What Data Does DevTools Pro Collect?
None. DevTools Pro does not collect any personal data, usage data, or device information.
When you use DevTools Pro to format JSON, render HTML, or decrypt messages, that data:
- Is processed entirely within your browser using the WebCrypto API
- Is never sent to any server
- Is never logged or stored persistently
- Is never shared with third parties
- Is cleared from memory after you close the extension or navigate away
Local Storage
DevTools Pro stores only one piece of data locally in your browser's localStorage:
devtools-theme — Your theme preference (either "dark" or "light")
This allows us to remember whether you prefer dark or light mode when you return to the extension. This data is stored only on your computer, is never transmitted, and you can delete it anytime by clearing your browser cache.
Clipboard Access
DevTools Pro requests permission to read from and write to your clipboard for these purposes:
- "Paste" button — Allows you to paste JSON, HTML, or encrypted data from your clipboard
- "Copy" button — Allows you to copy formatted output back to your clipboard
We do not read your clipboard automatically, only when you explicitly click a Paste button. We do not retain clipboard data after you copy — we copy your data and then forget it.
🔐 Permissions Explained
DevTools Pro requests only two permissions from Chrome, both necessary for core functionality:
clipboardRead
Allows the extension to read from your clipboard when you click the "Paste" button. Used to import JSON, HTML, encrypted keys, and other data from your clipboard into the extension.
clipboardWrite
Allows the extension to write to your clipboard when you click "Copy". Used to export formatted JSON, rendered HTML output, decrypted plaintext, and hashes to your clipboard.
Permissions We Don't Request
DevTools Pro intentionally does not request:
- ❌
<all_urls> — We don't inspect your web traffic
- ❌
tabs — We don't access your open tabs or tab history
- ❌
browsingData — We don't access your browser history
- ❌
storage (sync) — We don't sync data across devices
- ❌
identity — We don't require you to sign in
- ❌
webRequest — We don't intercept network requests
- ❌ Any background permissions for tracking or monitoring
⚙️ Local Processing Guarantee
All cryptographic operations in DevTools Pro use only local processing in your browser. Here's what that means:
Cryptography Stack
- WebCrypto API (SubtleCrypto) — For JWE, RSA, AES, HKDF, PBKDF2, SHA hashing, HMAC
- bcryptjs — A pure JavaScript bcrypt library for password hashing and verification
- No external libraries or services — Everything is contained within the extension
Network Activity
DevTools Pro makes zero network requests for:
- Cryptographic operations (no key servers)
- Usage analytics or tracking
- Update checks or version pings
- Third-party services of any kind
Exception: The only network access is when you explicitly use the clipboard buttons to paste or copy data from your own sources.
Performance & Resources
Because all processing is local:
- The extension is fast — no network latency
- The extension works offline — even without internet
- The extension is lightweight — ~130 KB total
- Your data is secure — never leaves your machine
🛡️ Security & Safety
Browser Sandbox
DevTools Pro runs in Chrome's secure extension sandbox. This means:
- The extension code is isolated from web pages you visit
- The extension cannot inspect other extensions or your browsing
- The extension cannot modify your browser settings or configuration
- Chrome itself enforces these boundaries at the OS level
Cryptographic Standards
DevTools Pro implements:
- JWE (JSON Web Encryption) — RFC 7516 standard
- RSA-OAEP — Optimal Asymmetric Encryption Padding (FIPS 186-4)
- AES-GCM — Galois/Counter Mode authenticated encryption (NIST-approved)
- PBKDF2 — Password-Based Key Derivation Function 2 (RFC 2898)
- bcrypt — OpenBSD password hashing algorithm
- SHA-256/384/512 — Secure Hash Algorithm (NIST FIPS 180-4)
- HMAC — Hash-Based Message Authentication Code (RFC 2104)
All cryptographic operations use either the standardized WebCrypto API (which uses your system's secure crypto libraries) or established open-source implementations.
No Known Vulnerabilities
DevTools Pro is a lightweight, single-purpose extension with minimal dependencies. The extension:
- Contains no embedded ads or tracking
- Contains no malware or unwanted behavior
- Is regularly reviewed for security issues
- Is open to security audits and bug reports
Reporting Security Issues
If you discover a security vulnerability in DevTools Pro, please report it responsibly to us at:
ping.adtech@gmail.com (or via the contact form below)
Please include:
- A description of the vulnerability
- Steps to reproduce
- Potential impact
- Suggested fix (if applicable)
We will investigate promptly and provide a fix in a timely manner. Responsible disclosure is appreciated.