Privacy Policy

Effective date: April 24, 2026

Overview

NetPhantom is a Chrome DevTools extension that visualises network traffic from the browser tab you are inspecting. It does not collect, transmit, or store any personal data on external servers. All processing happens locally in your browser.

Data we do not collect

NetPhantom never collects, transmits, or sells:

• URLs, request headers, or response bodies from inspected pages
• Browsing history or session data
• Personal identifiers of any kind
• Telemetry, analytics, or crash reports

Data processed locally

While DevTools is open, NetPhantom reads network request metadata (URL, method, status code, timing, headers, server IP) from the tab you are inspecting. This data:

• Is held only in the extension panel's in-memory state
• Is never written to disk beyond Chrome's own extension storage (used only for mock rules you create)
• Is discarded when you close DevTools or click Clear

Outbound network requests made by the extension

NetPhantom makes two outbound requests, both to public CDNs:

• World map topology — country border data is fetched from cdn.jsdelivr.net/npm/world-atlas the first time you open the map panel. This is static JSON consumed only for rendering; no user data is included in the request.
• IP geolocation — server IP addresses are resolved to countries using a bundled offline database (DB-IP Lite). No IP addresses are sent to any external service.

Permissions

• storage — persists your DevTools panel preferences across sessions.
• tabs — identifies which tab is being inspected so network events are routed to the correct panel.

NetPhantom requests no host permissions. All network data is captured through the Chrome DevTools Protocol (chrome.devtools.network), which provides access only to the tab currently open in DevTools and requires no broad host access.

Third-party services

NetPhantom does not integrate with any analytics, advertising, or data-broker services.

Children

NetPhantom is a developer tool not directed at children under 13 and does not knowingly collect data from anyone.

Changes

If this policy changes materially, the effective date above will be updated and a note will be added to the GitHub repository.

Contact

Questions about this policy can be directed to the project maintainers via GitHub Issues.