HeaderGuard Pro: Privacy-First HTTP Header & User-Agent Modifier

ExtensionDeveloper Tools

Overview

Modify HTTP request & response headers and User-Agent with Sec-CH-UA client hints under MV3. Zero telemetry, 100% local.

Looking for a trustworthy, zero-telemetry HTTP Header & User-Agent modifier built natively for Chrome Manifest V3? HeaderGuard Pro updates both HTTP headers (via declarativeNetRequest) AND modern Sec-CH-UA Client Hints + navigator.userAgent so your User-Agent switches actually work on modern websites. 100% FREE FOREVER FEATURES: • Complete MV3 User-Agent Switcher: Updates HTTP User-Agent, Sec-CH-UA Client Hints, and JS navigator.userAgent simultaneously. • Custom HTTP Header Rules: Add or override request headers (Authorization, X-Forwarded-For, custom API keys) locally. • Zero Telemetry & Zero Adware: 100% offline local storage. No analytics, no hidden tracking scripts, no external servers. • Per-Site Optional Permissions: Only runs on the domains you authorize. HEADERGUARD PRO POWER FEATURES: • 1-Click ModHeader Profile JSON Importer: Migrate your existing header profiles in seconds. • Unlimited Header Rules & Multi-Environment Profiles: Switch between Dev, Staging, and Production header sets in 1 click. • Automatic Per-Domain Rule Activation & Team JSON Export.

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Details

Version
1.0.0
Updated
November 2, 2026
Flag concern
Offered by
AppStudio Desk
Size
22.89KiB
Languages
English
Developer
Email
support@appstudiodesk.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

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HeaderGuard Pro: Privacy-First HTTP Header & User-Agent Modifier has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.