Is It Cached?

Is It Cached? gives you an overview about the browser cache, all cache-relevant response headers and also detects multiple CDNs.

What is Is It Cached??

Is It Cached? is a Chrome extension that provides an overview of cache-relevant response headers, detects multiple CDNs, and gives insights into browser cache. It helps developers optimize their infrastructure and determine if CDNs are working effectively.

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Stats

This extension was removed from Chrome Web Store on 2022-06-19

By: http://raphael.vullriede.de

Users: 1,000+

Rating: 3.56 (18)

Version: 0.9.0 (Last updated: 2015-06-04)

Creation date: 2015-06-04

Risk impact: Moderate risk impact

Risk likelihood: High risk likelihood

Manifest version: 2

Permissions:

tabs

Size: 427.01K

URLs: Website

Stats date:

Other platforms

Not available on Firefox

Not available on Edge

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Summary

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You spend lots of time to optimize your infrastructure to make sure you servers respond with correct cache headers?

You use a CDN to speed-up your content delivery but you don't know if it is really working?

This extension for the developer tools gives you an overview about all relevant request headers (method, if-modified-since, if-none-match) and response headers (cache-control, pragma, last-modified, etag) in one single table.

It also detects if elements are fetched through a CDN and shows you the cache status of the CDN (currently only Cloudflare is supported).

You find more information, explanation about the used colors and a changelog here: http://raphael.vullriede.de/is-it-cached/

new in version 0.8.1:

support for edgecast (http://www.edgecast.com), thanks to Andrew White for the tip!

new in version 0.8:

Switched to jQuery for better table customization.

User reviews

No longer works or is supported.

Chase Deloitte, 2022-05-03

Would it hurt to write documentation on how to use? Clicking the icon just gives a dropdown and clicking "is it cached" just loads the store page...

Jordan Kolbaba, 2019-10-01

Was great at one point now its EOL unless the dev updates it.

Michael Walker, 2018-02-02

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Safety

Risk impact

Is It Cached? may not be safe to use and it requires some risky permissions. Exercise caution when installing this extension. Review carefully before installing.