Who should use Header Setter?

Header Setter is an open-source project built for web developers and QA testers.

Is Header Setter free?

Yes — Header Setter is free to use.

What platforms does Header Setter run on?

Header Setter runs on the web, the command line, embeddable surfaces, macOS, and Windows.

Is Header Setter still active?

Unverified. Header Setter 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 are alternatives to Header Setter?

Similar projects tracked by PulseGate include Hashrate Lens, SaveAI, and Codex File Drop.

Who makes Header Setter?

Header Setter is developed by Otto Wagner.

How long has Header Setter been around?

Header Setter first shipped in 2026.

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Header Setter

Name: Header Setter
Author: Otto Wagner

github.comBrowser DevTools & extensions

Header Setter is an open-source browser extension for setting or modifying HTTP request headers while browsing. It is intended for developers and testers who need to inspect or alter request behavior across Chrome or Firefox.

FreeWebCLIEmbeddablemacOSWindowsLinux

Visit github.com

Overview

5 features

Header Setter sits in PulseGate's Browser DevTools & extensions category. It focuses on modifying browser request headers for testing, debugging, and development without manually changing browser configuration. Header Setter is an open-source project aimed at web developers and QA testers. It is available for free. It ships for the web, the command line, embeddable surfaces, macOS, and Windows.

Otto Wagner builds and maintains Header Setter, and it first shipped in 2026. Among its 5 catalogued features are request headers, header rules, and browser integration.

Request headers
Header rules
Browser integration
Chrome support
Firefox support

Built with & integrations

Runs on

BrowserCLIEmbeddablemacOSWindowsLinux

Trust & compliance

Verified signals

HTTPSTerms of ServiceFree tierStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed9 Sept · 01:13 UTC
Header Setter verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Header Setter

What does Header Setter do?: Header Setter focuses on modifying browser request headers for testing, debugging, and development without manually changing browser configuration. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Header Setter?: Header Setter is an open-source project built for web developers and QA testers.
Is Header Setter free?: Yes — Header Setter is free to use.
What platforms does Header Setter run on?: Header Setter runs on the web, the command line, embeddable surfaces, macOS, and Windows.
Is Header Setter still active?: Unverified. Header Setter 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 are alternatives to Header Setter?: Similar projects tracked by PulseGate include Hashrate Lens, SaveAI, and Codex File Drop.Hashrate Lens SaveAI Codex File Drop
Who makes Header Setter?: Header Setter is developed by Otto Wagner.
How long has Header Setter been around?: Header Setter first shipped in 2026.

At a glance

Pricing: Free
Platforms: Web · CLI
Languages: English
First seen: 9 Sept 2026
Built for: web developers and QA testers
Model: Open source
Solves: Modifying browser request headers for testing, debugging, and development without manually changing browser configuration.

Registered as

Chrome Web Store: hobhlonbmogpejnjainlmbmgfabhglha
Firefox Add-ons: c6a223e979eb44a18489

Developer

Otto Wagner

Index record

Indexed: 9 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 9 Sept 2026

Identity audit (13)

Slug: header-setter-github-com
Lifecycle state recorded: 9 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 9 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Taken from the project's own store listing.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 9 Sept 2026
Canonical URL: https://github.com/otto-wagner/header-setter

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Also in Browser DevTools & extensions

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