Is It Cached?

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

Is It Cached? - Chrome Extension

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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Extension 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

Other platforms

Not available on Android

Not available on Firefox

Not available on Edge

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Extension 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: