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Cache Header Inspector — Free Online Tool

Audit Cache-Control + ETag strategy

Paste HTTP response headers → cache strategy audit. Cache-Control, ETag, Expires, Last-Modified.

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Learn more

Cache header inspector

How to use this tool

  1. 1

    Paste HTTP response headers

  2. 2

    See cache strategy audit

Frequently Asked Questions

Cache-Control best practice?
Static assets (JS/CSS/images with hash): Cache-Control: public, max-age=31536000, immutable. HTML: no-cache + ETag. API: private, no-cache.

Key Takeaways

  • Cache Header Inspector is a free, browser-based seo & web tool — audit cache-control + etag strategy.
  • No signup, no downloads, no file uploads. Tools run in your browser; the few that need an outside service say so on the page.
  • Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use Cache Header Inspector

  1. Open the tool: Launch Cache Header Inspector on Toololis — no account or download needed.
  2. Enter your data: Paste text, enter values, or select a file directly in your browser.
  3. Get instant results: Everything is processed locally — results appear immediately.
  4. Copy or download: Save your output or share it. Bookmark for quick access next time.

Cache Header Inspector — Quick Facts

Price
Free — no limits, no watermarks, no paywalls
Privacy
Processed in your browser. Tools that need an outside service say so on the page. Page views are counted (Google Analytics).
Platform
Any modern browser on desktop, tablet, or mobile
Category
SEO & Web Tools on Toololis
Offline
Works offline after first visit (Progressive Web App)
FeatureDetails
ToolCache Header Inspector
CategorySEO & Web
Signup RequiredNo
File UploadNone — processed in browser
Mobile SupportFully responsive
CostFree forever

Why Use Cache Header Inspector?

You should try Cache Header Inspector for a quick, private way to audit cache-control + etag strategy. Processing happens in your browser and files are never uploaded; the few tools that need an outside service say so on the page.

On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.

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100% Privacy. This tool runs entirely in your browser. Your data is never uploaded to any server.