Header - Secure HTTP Header Editor

Set, append, or remove HTTP request headers per website. Least-privilege by design: no body access, no header read access.

A Chrome extension for modifying outgoing HTTP request headers on a per-site basis, built around a strict least-privilege model: it can set, append, or remove headers, but it cannot read your headers or request bodies, and it gains access to modify a website headers only after you explicitly grant it — one site at a time.