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Description
Local-first request header profile switcher for engineering tests. Header Profile Switcher is a local-first Chrome extension for developers, QA engineers, and system engineers who need to test services with custom HTTP request headers. Create reusable profiles for cache, CORS, vendor, staging, or API test scenarios. Each profile can define target URL patterns and request headers such as `Cache-Control`, `Pragma`, `Origin`, and custom debugging headers. Only one profile is active at a time, making it easy to switch scenarios without hidden background behavior. Key features: - One active request-header profile at a time - Global ON/OFF switch - Compact popup editor for profile, target URLs, and request headers - Target URL wildcard and regex filters - JSON import/export for local backup - Local-only storage with `chrome.storage.local` - Runtime host permission requests instead of install-time all-site host access - No cloud sync - No telemetry - No analytics - No request or response history logging - No external server communication Designed use cases: - Cache-control testing - CORS response validation using controlled `Origin` headers - Vendor/staging test scenarios - API debugging with custom request headers - Local engineering workflows Security and privacy posture: Header Profile Switcher does not collect, transmit, sell, or share user data. Profile settings are stored locally in the browser. The extension does not log browsing history, request headers, response headers, cookies, credentials, page content, or network bodies. Note: Header modification can affect how websites respond. Use profiles only for systems and tests you are authorized to inspect.