Overview
Modify request headers, response headers and redirect URLs, with rules isolated per site.
Header Editor modifies HTTP request headers, response headers and redirect URLs — with one key difference: every rule lives in a profile that is scoped to a single site, so rules for one domain never leak into another. FEATURES • Request headers — set, append or remove any header (Authorization, User-Agent, custom X-* headers, …) • Response headers — e.g. add Access-Control-Allow-Origin for local development, strip Content-Security-Policy while debugging • Redirect URLs — wildcard patterns or RE2 regex with \1–\9 capture groups (e.g. rewrite /v1/(.*) to /v2/\1) • Per-site isolation — each profile is scoped to a domain (subdomains included) or a URL pattern; leave the scope empty to apply everywhere • Three-level switches — master pause, per-profile, per-rule • Toolbar badge shows the number of active rules; invalid rules (e.g. a bad regex) are reported in the popup instead of failing silently • Duplicate profiles, export them as JSON BUILT ON MANIFEST V3 Header Editor uses Chrome's declarativeNetRequest API: headers are rewritten by the browser's network layer. No content scripts are injected into pages, nothing slows your browsing down, and the extension cannot read the traffic it modifies. PRIVACY All data stays in your browser's local storage. Header Editor collects nothing, transmits nothing, and talks to no server.
Details
- Version1.1.1
- UpdatedJuly 18, 2026
- Size492KiB
- LanguagesEnglish
- Developer
Email
tuotaka@gmail.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes