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Header Override - Modify HTTP Headers and Cookies

Browser extension to modify HTTP headers, cookies for API debugging

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What Header Override - Modify HTTP Headers and Cookies does

Header Override is a free, open-source header editor extension that let's you modify HTTP headers and cookies in Chrome, Firefox, and Edge. Create URL-scoped rules to change HTTP request and response headers or cookies, and switch between profiles stored locally in your browser. It helps developers test authentication, API behavior, and staging configurations without changing application code.

See how to simple modify request headers or change User Agent in browser.

Header Override - Modify HTTP Headers and Cookies pricing

Header Override - Modify HTTP Headers and Cookies is free to use, with no paid version listed.

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shawkat.dev-8d59

Nov 8, 2026

Being able to modify request headers and cookies without changing application code is really handy for debugging. Can Header Override export and share URL-scoped rule profiles with teammates while keeping sensitive cookie values private?

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Questions about Header Override - Modify HTTP Headers and Cookies

Header Override - Modify HTTP Headers and Cookies is a development product listed on Uneed, available for free. It's tagged with API & Data, Testing. See the best API & Data products for related options.

What is Header Override - Modify HTTP Headers and Cookies?

Header Override - Modify HTTP Headers and Cookies is browser extension to modify HTTP headers, cookies for API debugging.

Is Header Override - Modify HTTP Headers and Cookies free?

Yes, Header Override - Modify HTTP Headers and Cookies is free to use.

Is Header Override - Modify HTTP Headers and Cookies open source?

Yes, Header Override - Modify HTTP Headers and Cookies is open source. Its source code is available at https://github.com/headeroverride/headeroverride.

What are alternatives to Header Override - Modify HTTP Headers and Cookies?

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What category does Header Override - Modify HTTP Headers and Cookies belong to?

Header Override - Modify HTTP Headers and Cookies is listed under Development on Uneed.

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