HTTP Header Mangler

HTTP Header Mangler inserts HTTP headers on a per host basis.
HTTP Header Mangler is a Firefox add-on which inserts HTTP headers on a per host basis. Matching of hosts is done with either simple strings or regular expressions. Rules can have multiple headers apply to multiple hosts, or simply insert a single header for a single host.
Manifest V2
Daily users:
163 -12
Version:
1.1.4resigned1 (Last updated: 2024-04-25)
Version code:
5726303
Creation date:
2014-04-04
Permissions:
  • storage
  • webRequest
  • webRequestBlocking
  • <all_urls>
Size:
11.04K
URLs:
Website
Full description:
See detailed description
Updated:
a day ago

User reviews



I can modify the "Accept" header in outgoing HTTP requests in Firefox 129, so it still works. It would be nice if syntax errors in the rules would be shown.
by cweiske, 2024-08-27
View all user reviews

Extension safety

Risk impact

HTTP Header Mangler requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
Risk likelihood

HTTP Header Mangler is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
Upgrade to see full risk analysis details

Similar add-ons

Here are some Firefox add-ons that are similar to HTTP Header Mangler:

Modify Header Value Modify Header Value
Milen
11K 3.91 (58)
HTTP Headers Customize HTTP Headers Customize
fumidzuki
5 0.00 (0)
Alx Knife Alx Knife
Dormines
- 0.00 (0)
Headers Middleman Headers Middleman
ClareTor
19 3.00 (1)
Simple Modify Headers - Extended Simple Modify Headers - Extended
Warren Bank
72 5.00 (1)
HTTP Header Live HTTP Header Live
Martin Antrag
9K 4.72 (39)
HTTP Headers Viewer HTTP Headers Viewer
RUNARDATA
1 0.00 (0)
ModHeader ModHeader
ModHeader
20K 3.37 (67)
Header Editor Header Editor
泷涯
12K 4.69 (178)