Headsman - Modify Headers (like a boss)

What it can reach

Every site you visit. This extension can read and change the content of any page you open.

• Block or redirect requests by rules it declares in advance declarativeNetRequest
• Store data in your browser storage

The full permission history for this extension →

The publisher

Clockwork Earl publishes 2 listings we track, 87 users between them.

1. Marksman - Draw on the Browser (like a boss) Clockwork Earl · Productivity · Tools · published 2026-08-10 10 users

Like this one

Listings the catalog judges closest in what they say they do.

1. Header Handler Describes nearly the same job, smaller audience 33 users ★ 5.0
2. HeadX Describes nearly the same job, smaller audience 23 users
3. SimpleModHeader Describes nearly the same job, smaller audience 45 users ★ 5.0
4. Header Modify Describes nearly the same job, smaller audience 675 users ★ 5.0
5. Modify Headers — HeaderSmith (MV3 ModHeader alternative) Describes nearly the same job, smaller audience 125 users ★ 5.0

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.