3 items
Add or overwrite HTTP request and response headers on URLs you choose. Open source. FEATURES • Add or overwrite request and response headers on URLs matching your patterns • Multiple URL patterns per rule — Enter or comma to add, * / ** wildcards • Per-header on/off toggle, solo button, and a note field • Duplicate a single header row or a whole rule in one click • Drag to reorder rules and header rows • Header name autocomplete, split by request and response • Export rules as JSON to back up or share, import by pasting • Follows your system light/dark theme • Applies instantly — no save button, no page reload of the popup needed • Rules keep working after browser restart, with no background process PRIVACY • All data stays in your browser (chrome.storage.local) • No collection, no transmission, no analytics, no remote code • The extension registers declarativeNetRequest rules that Chrome itself applies — it cannot read your requests, responses, or page content OPEN SOURCE • https://github.com/gmelon/awesome-mod-header • Provides fast and easy Header Modification.
Aug 9, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.