ModHeader logo

ModHeader

by ModHeader LLC · Since 2011
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ActiveAvailable globallyCloud
Quick facts
VendorModHeader LLC
Year launched2011
StatusActive
LocationKaty, Texas 77494, US
Countries servedGlobal
Languages1
IntegrationsN/A
Free tierNO
Free trialNO
Contact salesNO

About ModHeader

ModHeader is an all-in-one web debugging tool. It successfully bridges the gap between simple browser inspection and heavy-duty network proxying.

ModHeader is an all-in-one web debugging tool. It successfully bridges the gap between simple browser inspection and heavy-duty network proxying. It is an essential tool for any web professional who needs to test API authentication, troubleshoot CORS issues, or simulate regional traffic. While the move toward a paid "Pro" model has introduced some limits for free users, it remains the most robust and user-friendly header manipulator available on the market today.

Pros & Cons

Pros
  • Provides a consistent experience across almost all Chromium-based browsers and Firefox.
  • Most modifications can be made and enabled in just 1–2 clicks.
  • Allows non-developers (like QA testers) to manipulate headers without touching the backend.
Cons
  • The limit of 10 rules can be tight for power users managing complex environments.
  • Users need a basic understanding of HTTP protocols to use the tool effectively.
  • Cannot be used on standard mobile browsers

Features

Key features

Export/Import

Easily share your setup with team members via JSON files or shared URLs.

Cloud Sync

Automatically backup your profiles and rules to the cloud so they are available across all your browsers.

Profile Management

Create multiple profiles for different testing environments (Dev, Staging, Production) and switch between them instantly.

Advanced Filtering

Apply header changes only to specific URLs using Regex, tab groups, or specific windows.

Request & Response Modification

Add, modify, or remove headers (e.g., X-Forwarded-For, Authorization) on the fly.

Additional features

CSP Editor

A specialized tool for modifying Content Security Policy headers to test security bypasses.

Organization Support

Manage multiple licenses for a development team under one billing account.

Auto-complete

Provides suggestions for common header names and values to speed up configuration.

Tab Locking

Lock a specific profile to a specific browser tab.

Undo Functionality

Quickly revert the last change if a rule breaks the page.

Dark Mode Support

A built-in dark theme for developers working in low-light environments.

One-Click Toggle

Enable or disable all modifications instantly with a single button.

Dynamic Variables

Use placeholders to inject dynamic values into headers.

URL Redirects

Redirect requests from one URL to another (useful for testing local scripts on live sites).

Cookie Modification

Edit individual cookies within the Cookie request header or Set-Cookie response header.

Pricing

Free trial
Free version
Request a quote
Promo Offer

Countries & Languages

Global
Countries served
1
Interface languages
1
Billing currencies

Interface languages

English

Billing currencies

🇺🇸USD

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