Think of vcp as a digital highlighter for websites — but smarter. It lets you click, point, and annotate anything on a live webpage. Those notes stay there when you refresh, when you switch pages, and when you come back later. And the best part? It connects straight into Antigravity AI agents, so you can show an AI exactly what you see and what you want changed — no coding required.
Whether you're a designer reviewing a website, a manager giving feedback, or someone testing an app, vcp helps you mark up pages visually and hand that context over to AI tools. No confusing code. Just click, type, and go.
Here's what makes vcp surprisingly powerful — even if you've never written a line of code:
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🖱️ Point & Click Annotation
Click any element on a webpage and add a note. A small, friendly marker appears right there. Perfect for saying "move this button up" or "this text is hard to read." -
💾 Persistent Notes Across Pages
Your annotations don't vanish. vcp remembers them as you navigate between pages on the same site. Come back tomorrow — they're still there. -
🤖 Antigravity AI Bridge
With one click, vcp packages every annotation and sends it to Antigravity AI agents. The AI sees exactly what you see — real page elements, real locations, real context — and can work on your comments directly. -
🔒 Runs Inside Your Browser
Built as a Chrome extension with modern Manifest V3 standards. It works in the background without slowing down your computer or hogging memory. -
🛡️ Privacy-Friendly Shadow DOM Technology
Your notes live in a "shadow" layer — they don't interfere with the website's actual code or layout. Nothing breaks. Nothing changes visibility for other visitors. -
🎯 Built for Real-World Workflows
Pair programming, UI reviews, QA testing, accessibility checklists — if you look at websites, you have a use case.
Before you begin, make sure you have:
- Google Chrome (or Chromium-based browser like Edge, Brave, or Opera) — version 109 or newer
- Internet connection (for downloading and for AI features)
- Windows 10 or Windows 11
- About 50 MB of free disk space (small installation)
Visit this link to download the application:
👉 Download vcp
You'll land on a page with a list of files. Look for the newest release at the top. The file is named something like vcp-setup.exe or vcp-windows.exe. Click it to begin downloading.
Once the download finishes, open your Downloads folder and double-click the file. Windows may ask for permission — click "Yes" if you see a prompt. The installer opens and walks you through a few simple screens. Keep clicking "Next" and "Install" — the default settings are perfect.
After installation, open Google Chrome. You should see the vcp icon (a small blue or purple circle) in the top-right corner of your browser toolbar, near the address bar. If you don't see it, click the puzzle-piece icon (Extensions), find vcp, and pin it to the toolbar.
Let's do a quick practice run so you understand the magic:
- Open any website — say your company's homepage or a news site.
- Click the vcp icon in your toolbar. The icon turns active, meaning annotation mode is on.
- Click any text or button on the page. A small box appears where you can type a note.
- Write something like "Change this heading to blue." Click Save.
- Notice the marker — a small dot or icon stays on that element.
- Click the vcp icon again to turn off annotation mode. The page looks normal, but your notes are saved.
Now, refresh the page. Your marker is still there. That's persistence in action.
Here's how vcp becomes part of your daily workflow:
- Annotate a webpage using the steps above. Add as many notes as you want — you can annotate 1 element or 50.
- Open Antigravity AI Agent (if you don't have it, the extension will guide you).
- Click the "Send to AI" button inside the vcp panel.
- Your annotations are packaged together as visual context and delivered to the AI. The AI can now reference exact locations, colors, text, and layout positions — because it "sees" what you see.
- Ask the AI to fix, improve, or generate code based on your notes. The AI understands exactly what you meant.
| Problem | Solution |
|---|---|
| I don't see the vcp icon after installation | Go to chrome://extensions, find vcp, and enable it. Then click the puzzle piece icon in the toolbar to pin vcp. |
| My annotations disappeared | Make sure you're on the same domain (e.g., example.com vs www.example.com). Switch off annotation mode, refresh the page, and switch it back on. |
| The "Send to AI" button is grayed out | Check your internet connection. Also, make sure Antigravity AI is installed or logged in — vcp will show a guide if something's missing. |
| The extension slows down Chrome | vcp only activates when you click its icon. If performance bothers you, simply turn off annotation mode when you're done. That's it. |
| Windows says "Unknown Publisher" | This is normal. Click "More Info" → "Run Anyway." vcp is open-source, and Windows just hasn't seen it before. |
Q: Is vcp free?
A: Yes. It's an open-source project — free forever, no subscription.
Q: Does vcp change the website?
A: No. All annotations live in a shadow layer that's invisible to the site itself. Other visitors see nothing. The website's code and behavior stay exactly the same.
Q: Can I delete a note?
A: Absolutely. In annotation mode, click any marker and choose "Delete note." To remove all notes on a page, open the vcp panel and click "Clear Page."
Q: Does vcp work in other browsers?
A: vcp works on any Chromium browser — Chrome, Edge, Brave, Opera, and Vivaldi. Safari and Firefox are not supported yet.
Q: Where are my notes stored?
A: Notes live in your local browser storage. They are not sent to the cloud unless you explicitly click "Send to AI."
- Pair with a design tool — Screenshot your annotated page and send it to a designer. The markers add priceless context.
- Use for QA checklists — Walk through a checkout flow, annotate every issue, then send everything to an AI agent to generate a bug report.
- Learn with AI — Ask the AI to "explain why this button is misaligned" while including your annotation. The AI can see the element's real geometry, not just a screenshot.
vcp is an open-source community project. If you find a bug, have feature suggestions, or want to contribute code, visit the GitHub repository.
For quick support, check the closed issues — maybe your question was already answered. Or open a new issue and the maintainers (real humans) will jump in.
vcp turns plain browsing into a visual conversation between you, your website, and AI agents. Stop trying to describe what you see with words — just click, annotate, and let the AI handle the rest. Getting started takes less than five minutes, and the payoff is instant clarity.
Download vcp today and start marking up the web in a whole new way. Your future self (and your AI assistant) will thank you.
Keywords: ai-agents, antigravity, chrome-extension, developer-tools, devtools, dom-annotation, in-context-learning, manifest-v3, open-source, pair-programming, shadow-dom, ui-ux, visual-feedback, web-development