Compare: ModHeader - Modify HTTP headers vs ModBox – Modify headers, block requests

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Metric	ModHeader - Modify HTTP headers	ModBox – Modify headers, block requests
User count	900,000	4,000
Average rating	2.91	4.75
Rating count	1,226	16
Last updated	2026-07-01	2026-04-20
Size	0.67 MB	0.10 MB
Version	7.0.18	0.2.4

Short description	Modify HTTP request and response headers, redirect URLs, and set custom headers easily with ModHeader Chrome extension. Fast, efficient, and free to use.	Modify HTTP headers, block assets or domains, and redirect requests with ModBox. Organize rules by folders and tabs for clean UX.
Full summary	ModHeader is the leading Chrome extension designed to effortlessly modify HTTP request headers, response headers, and redirect URLs. It supports adding, modifying, or removing headers such as Authorization, Content-Security-Policy, and custom cookies, enhancing development and debugging workflows. With over 800,000 users, ModHeader boasts features like advanced Content-Security-Policy editing, multiple profile management with quick switching, dark mode, dynamic variables, advanced filtering by tabs, and cloud backup support. It's lightweight, efficient, and available on multiple browsers including Chrome, Firefox, Edge, and Opera. ModHeader offers a free tier with optional paid features for power users, making it a versatile tool for developers and testers looking to control HTTP headers seamlessly.	ModBox lets you create global or domain-scoped rules to modify HTTP request and response headers, block assets or entire sites, and redirect requests. It focuses on a clean UX for developers and lets you organize rules by folders and tabs, with drag-and-drop and cloning. Organize, toggle, export, and import rules by folder, drill into domain criteria, and switch to compact mode. Open source on GitHub, with no tracking or paid features, making it a privacy-conscious tool for Chrome developers.