HEADER RULES

Privacy Policy

Last updated: July 17, 2026

Header Rules lets users configure HTTP headers to add to or replace in browser requests. This policy explains how the extension handles those settings.

Local Rule Settings

The extension stores the header name, header value, and optional note for rules created by the user in Chrome's local storage on the user's device. Header values may contain authentication information or other sensitive content; users should add only values they are authorized to use.

These rule settings are not sent to servers controlled by the developer. They are not sold, shared with third parties, or used for advertising, analytics, or user profiling.

Request Handling

The extension uses Chrome's declarativeNetRequest API to apply complete rules that the user has explicitly enabled to browser requests. The extension does not read, log, or transmit websites visited by the user, request content, response content, cookies, or browsing history.

Permission Use

• declarativeNetRequest: Applies Header Rules that the user has enabled to browser requests.
• storage: Stores the user's rule settings locally on the device.
• <all_urls>: Allows rules created by the user to work with their browser requests.

Data Retention and Deletion

Users can delete any rule from the extension popup. Uninstalling the extension removes rule settings stored by the extension in Chrome local storage.

Open Source Components

Header Rules is based on the Requestly Modify Headers Manifest V3 POC, which is licensed under the Apache License 2.0.

The published extension does not include third-party runtime analytics, advertising, or tracking libraries. The following open-source tools are used only to build the extension package:

• Rollup, @rollup/plugin-json, @rollup/plugin-typescript, rollup-plugin-copy, rollup-plugin-terser, and Archiver — MIT License.
• TypeScript — Apache License 2.0.
• @types/chrome — MIT License.
• tslib — 0BSD License.

Policy Updates and Contact

If this policy changes, the update will be reflected in a later extension version and in the Chrome Web Store listing. For questions about this policy, contact tudouni666@gmail.com.