Privacy Policy

Data processed and stored

After the user gives explicit consent, the extension processes website and network addresses locally to extract hostname values such as example.com or cdn.example.com. It stores only:

• the main hostname used to group a visited site;
• unique hostnames found in page resources, network requests, and URL-bearing attributes;
• the timestamp of the last visit;
• the number of visits;
• the selected interface language; and
• the user's data-collection consent setting.

The extension does not save page text, images, full URLs, paths, query strings, request or response bodies, cookies, credentials, form values, personal communications, or clipboard contents. Full addresses may be handled briefly in the browser only to extract their hostname and are not persisted.

Purpose

Stored hostnames are used only to show which first-party and third-party domains a visited website uses, provide local search and history, and let the user copy selected hostname lists.

Local storage and retention

All saved data is kept in the WebExtensions storage.local area in the user's local browser profile. Site Domains Explorer does not transmit stored or processed browsing data off the user's device.

History remains until the user deletes it from the popup or history page, clears extension storage, or uninstalls the extension. Disabling future collection does not automatically delete existing history.

Sharing and sale

Site Domains Explorer does not sell, rent, share, disclose, or transfer user data to third parties. User data is not used for advertising, profiling, credit decisions, or any purpose unrelated to the extension's single purpose.

Permissions

storage

Stores domain history, language, and consent locally.

webRequest

Observes HTTP(S) request destinations without changing or blocking traffic.

webNavigation

Associates normal and single-page navigation with the correct site.

http://*/* and https://*/*

Allow hostname discovery on websites the user chooses to visit.

Copying starts only when the user presses a copy button. The extension does not request clipboard permission and never reads the clipboard.

User choices

Collection is disabled by default. The first-run disclosure requires an affirmative checkbox and button before collection starts. The user can later disable collection, delete all history, or uninstall the extension.

The extension is not allowed to run in Incognito mode, so private browsing activity is not added to its saved history.

Security

The extension uses Manifest V3 and contains no remotely hosted executable code. On Chromium, local storage access is explicitly restricted to trusted extension contexts when that browser API is available. Its packaged page observer has no access to WebExtension APIs, reports only destination hostnames while collection is enabled, does not read payloads or responses, and preserves the result of every observed call. The Firefox manifest declares that no data is collected or transmitted outside the extension or local browser.

Open source

Site Domains Explorer is fully open source under the MIT License. The complete source code, build script, localizations, privacy controls, and documentation are available in the public GitHub repository.

Changes and contact

Material changes will be reflected in an updated policy and, when required, a new in-product disclosure. Privacy questions and support requests can be submitted through the relevant browser-store contact or the project issue tracker. Do not include sensitive personal information in a public issue.