HTTP Headers Viewer
HTTP Headers Viewer is a Firefox browser extension that displays HTTP response headers for the current page. It helps developers and security testers inspect caching, security headers, content types, and server information, with support for Firefox on desktop and Android.
Overview
8 featuresIn the Browser DevTools & extensions space, HTTP Headers Viewer takes a focused approach. It focuses on inspecting HTTP response headers for debugging caching, security, content type, and server information. It is built as a B2B product for web developers and security testers. It is available for free. It runs on the web, embeddable surfaces, and Android.
Nevia builds and maintains HTTP Headers Viewer, and it first shipped in 2026. Key capabilities include response headers, current-page inspection, and caching analysis. The interface is available in 32 languages, including Czech, German, and Greek.
Summary written by a language model from the project’s public pages.
- Response headers
- Current-page inspection
- Caching analysis
- Security header checks
- Content type inspection
- Server information
- Firefox for Android
- Optional site access
Built with & integrations
Trust & compliance
Indexing history
1What PulseGate has recorded for this listing
- Indexed17 Sep · 13:33 UTCHTTP Headers Viewer verified via Firefox Add-onsSource: Firefox Add-ons · Open
Frequently asked questions about HTTP Headers Viewer
- What is HTTP Headers Viewer?
- HTTP Headers Viewer focuses on inspecting HTTP response headers for debugging caching, security, content type, and server information. It is catalogued under Browser DevTools & extensions on PulseGate.
- Who should use HTTP Headers Viewer?
- HTTP Headers Viewer is a B2B product built for web developers and security testers.
- Is HTTP Headers Viewer free?
- Yes — HTTP Headers Viewer is free to use.
- What platforms does HTTP Headers Viewer run on?
- HTTP Headers Viewer runs on the web, embeddable surfaces, and Android.
- Is HTTP Headers Viewer still active?
- Unverified. HTTP Headers Viewer has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
- What are alternatives to HTTP Headers Viewer?
- Similar projects tracked by PulseGate include Headers Viewer, Cookies and HTTP Headers analyser, and HTML File Viewer.Headers ViewerCookies and HTTP Headers analyserHTML File Viewer
- Who develops HTTP Headers Viewer?
- HTTP Headers Viewer is developed by Nevia.
- How long has HTTP Headers Viewer been around?
- HTTP Headers Viewer first shipped in 2026.
Similar projects
Closest matches by what these projects do