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Description
Modify headers, cookies, query parameters, and redirects with profiles, ordered domain filters, variables, import, and export. Header Kit is a lightweight request rule manager for web development and QA. Create separate profiles for local development, staging, auth debugging, CORS testing, cache control, or issue reproduction. Each profile can be turned on or off independently. Core features: - Modify request and response headers. - Add Cookie headers and query parameters. - Redirect matching URLs. - Scope rules by domain, URL, resource type, tab, window, or tab group. - Reuse variables and import/export profile JSON. Rules are applied through Chrome Manifest V3 declarativeNetRequest. Your configuration stays in local Chrome storage and is not uploaded to any server.