DevOmniTools for Chrome & Edge
Instant access to 81+ developer tools directly from your browser toolbar. Features smart Omnibox search (omni <tool>), right-click text inspector, and offline popup utilities (Base64, SHA-256, UUID) with zero server telemetry.
v2.6.0 • Manifest V3 • Free & Open-Source (38.1 KB)
Privacy and offline availability
Core tools process input locally. Optional AI sends the selected snippet through Cloudflare to Cloudflare AI or the optional Google Gemini fallback after consent; provider retention policies apply. Contact submissions send your details to our email provider. Offline use requires the page and its assets to finish caching; external AI and contact delivery require internet.
Why Developers Love DevOmniTools Extension
Omnibox Address Bar Search
Type "omni" followed by a space and your tool name (e.g. "omni json", "omni jwt", or "omni hash") in Chrome's URL bar to jump straight to any tool with zero clicks.
Right-Click Text Inspector
Select any text or token on any webpage, right-click, and instantly format JSON, calculate SHA-256 hash, decode Base64, or send payloads directly to Diff Checker.
Offline Quick Utilities
Execute Base64 encode/decode, SHA-256 hashing, and UUID v4 generation directly inside the popup modal without opening a new browser tab or connecting to the internet.
Keyboard-First Navigation
Use ArrowUp, ArrowDown and Enter inside the popup to search and open tools. Use the omni keyword for address-bar search.
Manifest V3 Privacy Guarantee
Engineered according to Google's strict Manifest V3 specification. Zero third-party telemetry, zero external scripts, zero data logging, and no persistent tracking cookies.
Universal Chromium Support
Runs flawlessly on Google Chrome, Microsoft Edge, Brave, Opera, Arc, and Vivaldi desktop browsers.
Easy 3-Step Manual Installation
Takes less than 30 seconds to set up on any Chromium-based browser.
Download & Extract
Download the official devomnitools-extension.zip package below and extract the zip archive to a local folder on your computer.
Open Extensions Manager
Open a new tab and navigate to chrome://extensions (or edge://extensions). In the top-right corner, toggle Developer mode ON.
Load Unpacked & Pin
Click the "Load unpacked" button in the top-left corner, select your extracted folder, and pin the DevOmniTools icon {⚡} to your toolbar for 1-click access.
Frequently Asked Questions
Does the extension collect my browsing history or inputs?
No, absolutely never. DevOmniTools is strictly 100% client-side. The extension has zero tracking scripts, zero telemetry, and never makes unauthorized external network calls.
How does the Omnibox shortcut work?
Click your browser address bar, type "omni", press Tab or Space, then type any query like "jwt", "sql", or "password". Hit Enter to open the exact tool instantly.
Can I use this on Microsoft Edge, Brave, or Arc?
Yes! All Chromium-based browsers (Edge, Brave, Opera, Vivaldi, Arc) fully support Manifest V3 unpacked extensions via the exact same installation steps.
Does the extension work when offline?
Yes, for built-in popup tools. The extension popup includes offline Base64 conversion, SHA-256 hashing, and UUID v4 generation running 100% locally in browser memory without an internet connection. The Omnibox launcher also searches the entire catalog offline to open cached tool pages.
How do I update the extension when a new release is available?
Simply download the latest zip package, extract it over the existing folder, and click the refresh icon on chrome://extensions.
Is the source code open-source and auditable?
Yes. All extension source code is open-source and available on our public GitHub repository for community security audits.
Manifest V3 Security Model & Zero-Permission Local Execution
The DevOmniTools Chrome & Edge extension is engineered in strict compliance with Google's Manifest V3 standard. Unlike legacy browser extensions that request broad, invasive permissions (such as <all_urls> or clipboardRead access to every active tab), our extension operates on a zero-telemetry, least-privilege security principle.
🛡️ Zero Background Network Traffic
The extension contains zero fetch, XMLHttpRequest, or WebSocket calls in its background service worker. All transformations—including Base64 decoding, SHA-256 calculation, and UUID generation—execute 100% locally within the isolated extension popup memory.
⚡ Sub-Millisecond Omnibox Dispatch
By indexing all 67+ developer utilities into an in-memory Trie data structure, typing "omni <query>" resolves tool routes instantly without disk I/O or cloud API latency, providing a seamless workflow shortcut for high-throughput development teams.