Modify request and response headers per profile, with URL and resource filters, tab lock, pause, and cloud backup.
Users
45
+30 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#113K
#94K among extensions
Version
1.0.1
updated 9 Sep 2026
Users
monthly, 3 months
Latest, 16 Oct 2026:45 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 HeaderMod
HeaderMod lets you modify HTTP request and response headers using rules you define
• Multiple named profiles of request/response header rules
• Per-rule enable/disable
• URL filters (regex) and resource-type filters
• Tab lock — apply a profile only to the active tab
• Pause / resume all rules without deleting them
• Cloud backup — timestamped profile snapshots via browser sync
• Import / export profiles as JSON
A clean Manifest V3 rebuild built on declarativeNetRequest. Collects no data — see the privacy policy.