HeaderKit

Manifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

Modify browser request and response headers, cookies, and redirects with flexible filters and agent-friendly automation.

Users

+10 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#91K

#76K among extensions

Version

1.0.2

updated 18 Sep 2026

Users

monthly, 3 months

Latest, 16 Oct 2026: 81 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 months

Latest, 16 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About HeaderKit

HeaderKit is a privacy-friendly tool for modifying HTTP request and response headers directly in Chrome. Create profiles to organize request headers, response headers, cookies, and redirects. Apply rules only to selected URLs, tabs, windows, or resource types. Rules can be enabled individually, paused globally, and imported from or exported to JSON. HeaderKit also supports importing ModHeader configurations and optional automation through the HeaderKit CLI. All configuration is stored locally. HeaderKit has no accounts, telemetry, advertising, or developer-operated servers. Agent Mode is disabled by default and connects only to a CLI process started by the user on the same computer. https://github.com/GeoffZhu/HeaderKit