HTTP Header Injector

by kengo071225 · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

Add custom HTTP request headers in Chrome. A free, lightweight, open-source alternative to ModHeader.

Users

112

+32 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#81K

#68K among extensions

Version

1.0.0

updated 5 Aug 2026

Users

monthly, 3 months

Latest, 16 Oct 2026: 112 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 HTTP Header Injector

A Chrome extension for developers that lets you inject custom HTTP **request** headers. [ModHeader](https://modheader.com/), which had long been a popular choice, was removed from the Chrome Web Store and is no longer available. This repository and Chrome extension provide the essential ModHeader features for free. # Features - Add custom HTTP **request** headers to outgoing requests - Enable / disable each header individually - Optional URL filter to limit where headers are applied - An explicit **Save** button — nothing is applied until you save - Export / import your settings as a JSON file - Settings are stored only in your browser (`chrome.storage.local`) — no communication with any external server if you are favorite this, then please sponsor me!! https://github.com/sponsors/ysknsid25