# Privacy Policy

**ViewGraph Browser Extension** Last updated: April 19, 2026

## Summary

ViewGraph does not collect, transmit, or store any personal data. All captured data stays on your local machine.

## What Data the Extension Accesses

When you click the ViewGraph toolbar icon on a page, the extension reads:

* DOM structure (HTML elements, attributes, computed styles)
* Element bounding boxes and layout information
* Accessibility attributes (ARIA roles, labels)
* Network request status (success/failure, not request bodies)
* Console errors and warnings
* Client-side storage keys and non-sensitive values (localStorage, sessionStorage, cookies). Values that look like tokens, passwords, or keys are automatically redacted and never captured.
* CSS custom properties (variables defined on the page)
* Your annotations (comments you type, severity, category)

## Where Data Goes

All captured data is sent **only to a server running on your local machine** (localhost, ports 9876-9879). The extension never contacts external servers, cloud services, or third-party APIs.

The data flow:

```
Browser extension -> localhost MCP server -> .viewgraph/captures/ on your disk
```

## What We Do NOT Collect

* No personal information
* No browsing history
* No cookies or authentication tokens from visited pages (storage keys are captured but sensitive values like tokens, passwords, and API keys are automatically redacted)
* No request or response bodies
* No data sent to external servers
* No analytics or telemetry
* No user accounts or registration

## Data Storage

* User preferences (capture settings, auto-capture toggle) are stored in `chrome.storage.local` and `chrome.storage.sync`, both local to your browser
* DOM captures are stored as JSON files in your project's `.viewgraph/captures/` directory
* Screenshots are stored alongside captures on your local disk

## Third-Party Services

ViewGraph uses no third-party services, analytics, or tracking. The extension is fully self-contained.

## Permissions

| Permission  | Why it's needed                                                |
| ----------- | -------------------------------------------------------------- |
| `activeTab` | Access the current tab's DOM when you click the ViewGraph icon |
| `storage`   | Save your preferences locally across browser sessions          |
| `scripting` | Inject the capture script into the active tab on your click    |

## Open Source

ViewGraph is open source (AGPL-3.0). You can inspect the full source code at [github.com/sourjya/viewgraph](https://github.com/sourjya/viewgraph).

## Contact

For privacy questions, open an issue on [GitHub](https://github.com/sourjya/viewgraph/issues).

## Changes

If this policy changes, the updated version will be posted here with a new "last updated" date.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://chaoslabz.gitbook.io/viewgraph/reference/privacy-policy.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.