ModHeader - Modify HTTP Headers

Enhance your development workflow with ModHeader, the leading Chrome extension to modify HTTP request and response headers, cookies, and redirect URLs. Integrate seamlessly with FlashID for advanced browser automation.

Effortless HTTP Header Modification

Unlock seamless control over HTTP headers! ModHeader lets you add, modify, or remove request/response headers, cookies, and URLs with just a few clicks, perfect for debugging and testing.

https://chromewebstore.google.com/detail/modheader-modify-http-hea/idgpnmonknjnojddfkpgkljpfnnfcklj

ModHeader is the most popular Chrome extension for modifying HTTP request and response headers. Paired with FlashID’s fingerprint browser technology, it empowers developers and testers to customize headers, cookies, and redirects effortlessly, boosting productivity across web development and testing tasks.

Advanced Header Modification

Add, modify, and remove HTTP request/response headers, including X-Forwarded-For, Authorization, and custom headers. Edit cookies and use advanced CSP editors.

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URL Redirects & Filtering

Redirect URLs, apply filters by tab, group, or window, and enable modifications based on specific URLs for precise control in your workflow.

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Profile Management & More

Manage multiple profiles, export/import configs, support dynamic variables, dark mode, and one-click undo. Trusted by over 800,000 users.

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Unlimited Multiplicity

Multiple devices, no limits
No purchase limit, no multiplicity limit, no opening limit

Multi-Platform Control

Anytime, anywhere, just click
No client download required, accessible via PC and mobile browsers

Application Management

Application management so easy
Bulk install, uninstall, and launch applications

RPA

Leverage FlashID’s pre-built RPA templates for fast automation or custom workflows in secure cloud.

API

FlashID API handles account lifecycles and automates browser actions: batch social logins.

One-Click Sharing

Efficient management
Join a team with one click, share cloud devices among multiple users

Client Success Stories Trusted Worldwide

David Lee
Senior Developer, Tech Dynamics

“ModHeader has revolutionized our API testing. Custom headers and quick profile switching save us hours daily, integrating perfectly with FlashID.”
Sarah Johnson
Frontend Engineer, Innovate Labs

“With ModHeader, debugging CORS issues and header tweaks is effortless. Boosted our development velocity tremendously.”
Alex Smith
QA Lead, Quality Assurance Pros

“Our QA team relies on ModHeader for simulating various headers and redirects. Reliable, fast, and feature-rich.”

Master HTTP Headers with Ease

ModHeader provides fast, lightweight tools to modify headers, cookies, and URLs, streamlining development, testing, and debugging in your browser.

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Common related content QA

Can ModHeader modify HTTP request and response headers?

Yes, ModHeader excels at adding, modifying, and removing request/response headers, cookies, and more across websites.

Is ModHeader safe to use with FlashID?

Absolutely. ModHeader maintains privacy and security, complementing FlashID's fingerprint browsing capabilities.

How does ModHeader header modification work?

ModHeader uses advanced tools to edit headers like Authorization and CSP, mimicking custom network conditions with human-like precision.

Can I use ModHeader without interruptions?

Yes! It integrates seamlessly into Chrome, enabling quick toggles and profiles for uninterrupted workflows.

Is ModHeader compatible with all browsers?

ModHeader works on Chrome, Firefox, Edge, and Opera, with Chrome optimization.

How do I install the ModHeader extension?

Install directly from the Chrome Web Store or via packaged URL for manual upload.

Does FlashID support Firefox extensions like ModHeader?

FlashID focuses on Chrome, but ModHeader natively supports Firefox and others.

What if ModHeader isn't working?

Update to the latest version, clear cache, and restart your browser. Check permissions.

Does ModHeader store my data?

No, ModHeader prioritizes privacy and does not store personal data unnecessarily.

Can I customize ModHeader settings?

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Connect all your platform accounts

Thanks to our fingerprint technology, you no longer need to worry about your account being at risk, you just need to focus on your business.

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