HeaderWright

Set, append, and remove HTTP request headers by profile. No webRequest — this extension cannot read your traffic.

Set, append, and remove HTTP request headers, organized into profiles you switch on and off. No webRequest permission — nothing in the extension can read your traffic, and you can verify that by reading the manifest. What it does: - Header profiles — set, append, or remove request headers, grouped and named so you can keep separate setups for separate jobs - Per-domain scoping — each profile applies only to the domains you list (subdomains included) - Master on/off toggle, with a badge that always shows whether headers are currently being applied - Import and export profiles as plain JSON — deterministic and byte-stable, so you can share a setup or keep it in git Permissions, up front: - Built entirely on Manifest V3's declarativeNetRequest API. No webRequest, so there is no code path that can observe your requests. - No access to any site at install. When you add a profile for a domain, the browser asks for permission on that domain only. - No account, no sync, no backend, no telemetry. Profiles live in local extension storage. Early release — response-header support and more are planned.