chrome-custom-headers

A small Chrome extension to add, modify, or remove HTTP request headers. Created as a lightweight replacement for ModHeader (which includes ads).

Purpose

• Provide an ad-free, privacy-focused tool for manipulating request headers.
• Simple rule-based header injection/removal for development and debugging.

Load into Chrome (developer mode)

1. Open Chrome and go to chrome://extensions/.
2. Enable Developer mode (top-right).
3. Click Load unpacked.
4. Select the extension folder (the repository root or dist/build folder if the extension is built).
5. The extension should appear in the toolbar. Pin it if needed.

Note: if you have ModHeader installed, disable or remove it to avoid conflicting behavior.

Quick usage

• Click the extension icon to open the UI.
• Add a rule: specify domain matching (e.g., *://example.com/*), header name, and header value.
• Enable/disable rules or toggle the extension globally.
• Changes take effect on new requests (reload pages to apply).

Example rule

Domain: *://api.example.com/*
Header: X-My-Header
Value: 12345
Action: Add

Privacy & permissions

• Requires permission to read/modify requests for specified sites.
• No ads and no telemetry by default (verify in code for your distribution).

Uninstall

• Go to chrome://extensions/, find the extension, and click Remove.

Contributions, bug reports, and feature requests welcome — open a GitHub issue or PR in the repository.