Item logo image for HTTP Header Injector — Modify Request & Response Headers

HTTP Header Injector — Modify Request & Response Headers

iokig.com
5.0(

1 rating

)
ExtensionTools352 users
Item media 1 (screenshot) for HTTP Header Injector — Modify Request & Response Headers

Overview

Add, modify & remove HTTP request and response headers on any site. Per-rule toggles, URL/method scoping, profiles, import/export.

Header Injector adds, modifies, and removes HTTP request AND response headers on the pages your browser loads. Each header is a rule: name it, give it a value, choose what to do, and toggle it on or off. Rules apply at the browser's network layer, so they cover every request — page loads, fetch/XHR, images, even websockets. Each rule can: • set, append, or remove the header • apply to the outgoing request or the incoming response • be scoped by URL (wildcards or regex), HTTP method, and resource type • carry a description — a note to yourself about what it's for Features • Request and response header modification • set / append / remove operations • Wildcard or regex URL matching, plus method and resource-type conditions • Profiles — group rules into named sets (dev, staging, prod) and switch between them with one dropdown • Paste a headers block or a curl command to build rules instantly • Import and export your whole configuration as JSON • A master switch to bypass everything at once • A toolbar badge showing how many rules are active • A debug panel showing which rules matched on the current tab • Settings sync across your devices via your Chrome profile Built on Manifest V3 and the declarativeNetRequest API, so headers are applied by the browser's network layer — no request interception, no page scripts, and no data collection. Your configuration stays in your browser. Open source — the full code is on GitHub, so you can verify exactly what it does: https://github.com/slastrina/http-header-injector More software at https://iokig.com

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Details

  • Version
    1.1.1
  • Updated
    July 14, 2026
  • Size
    29.65KiB
  • Languages
    English
  • Developer
    Website
    Email
    contact.iokig@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization
The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

For help with questions, suggestions, or problems, visit the developer's support site

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