Request Header Modifier
Request Header Modifier is an open-source Firefox extension that lets users modify HTTP request headers. It is intended for web developers, testers, and advanced browser users who need to inspect or alter request behavior.
Overview
5 featuresRequest Header Modifier is a Browser DevTools & extensions project. It focuses on modifying HTTP request headers in Firefox for testing, development, and browsing workflows. It is built as an open-source project for firefox users and web developers. Request Header Modifier is open source under the Open Source license. Request Header Modifier is available on the web, embeddable surfaces, macOS, Windows, and Linux.
jvanbrunschot builds and maintains Request Header Modifier, and it first shipped in 2025. Among its 5 catalogued features are header modification, request rules, and firefox integration.
Summary written by a language model from the project’s public pages.
- Header modification
- Request rules
- Firefox integration
- HTTP testing
- Browser controls
Built with & integrations
Trust & compliance
Indexing history
1What PulseGate has recorded for this listing
- Indexed14 Sep · 03:44 UTCRequest Header Modifier verified via Firefox Add-onsSource: Firefox Add-ons · Open
Frequently asked questions about Request Header Modifier
- What is Request Header Modifier?
- Request Header Modifier focuses on modifying HTTP request headers in Firefox for testing, development, and browsing workflows. It is catalogued under Browser DevTools & extensions on PulseGate.
- Who should use Request Header Modifier?
- Request Header Modifier is an open-source project built for firefox users and web developers.
- Is Request Header Modifier free?
- Yes — Request Header Modifier is open source under the Open Source license and free to use.
- What platforms does Request Header Modifier run on?
- Request Header Modifier runs on the web, embeddable surfaces, macOS, Windows, and Linux.
- Is Request Header Modifier still active?
- Unverified. Request Header Modifier has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
- What projects are similar to Request Header Modifier?
- Similar projects tracked by PulseGate include HeaderMod, Modify HTTP Headers, and SimpleModifyHeaders.HeaderModModify HTTP HeadersSimpleModifyHeaders
- Who develops Request Header Modifier?
- Request Header Modifier is developed by jvanbrunschot.
- When did Request Header Modifier launch?
- Request Header Modifier first shipped in 2025.
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