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Privacy Policy

Last updated: 2026-07-01

Nocturne is a browser DevTools extension for inspecting network requests, console output, cookies, and site storage for pages you are actively debugging.

Data collection and use

Nocturne does not sell, rent, or share user data. Nocturne does not use analytics, advertising trackers, or remote telemetry. Nocturne does not transmit captured browsing data, request data, cookies, console logs, or site storage data to any external server.

Data handled locally

When the DevTools panel is open, Nocturne may display network request URLs, request headers, response headers, request bodies, response bodies, console messages, cookies, localStorage, sessionStorage, IndexedDB names, Cache Storage names, and service worker scopes for the inspected page.

Local storage

Nocturne stores extension preferences locally in the browser, such as filter settings, layout preferences, hidden console message rules, and limited request history. This data is stored using the browser extension local storage API and remains on your device.

Request history limits

Nocturne limits locally persisted request history to reduce stored data. It stores up to 500 requests, individual response bodies only up to a limited size, and removes bodies from stored history if the browser storage quota is reached.

Cookies and site data

Nocturne requests cookie and browsing data permissions so users can inspect and clear cookies and site storage for the page they are debugging. These permissions are used only inside the DevTools workflow. Nocturne does not upload cookies or site data anywhere.

  • storage, remember UI preferences and limited request history locally.
  • cookies, inspect and remove cookies for the page you are debugging.
  • browsingData, clear site data when you choose that action in the Nocturne panel.
  • http://*/* and https://*/*, allow the DevTools extension to work on pages you choose to inspect.

Location data

Nocturne does not request or collect device location data. If a website being debugged sends location information inside its own network requests or storage, that information may be visible locally in DevTools like any other request or storage value, but Nocturne does not separately collect, infer, or transmit location data.

Data deletion

Users can clear captured request history from the extension UI. Users can also remove extension-local data by clearing the extension's storage or uninstalling the extension. Site cookies and storage can be deleted through Nocturne only when the user chooses those actions.

Security

Nocturne keeps processed data local to the browser. The extension is designed for developer debugging and only operates on pages the user inspects through browser DevTools. Nocturne runs no remote code and sends no captured data to external services.

Actions you initiate

  • Export (HAR/JSON) and Copy actions write to a file or your clipboard on your device. What you do with that output is your choice.
  • Copy for AI masks sensitive header values (e.g. Authorization, Cookie) by default before copying.

Children

Nocturne is a developer tool and is not directed at children under 13.

Changes

We may update this policy from time to time. The “Last updated” date at the top will reflect the latest revision.

Contact

Questions about this policy? Open an issue on GitHub or visit our support page.

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