Google Chrome, Chromium and other Chromium-based browsers have supported an offline cache mode for a while now. The feature, hidden behind an experimental flag on the browser's chrome://flags page, made resources available from cache if they'd become unavailable.
Chrome would load the resource from cache whenever the Internet connection of the computer would drop or a resource on the Internet cannot be loaded because of other reasons.
With Chrome 37 comes a change to how offline mode works in the browser. Offline Mode will be enabled by default starting with Chrome 37 which means that the experimental flag will no longer be provided.
Note: While it is likely that this is going to happen, there is still a chance that Google will undo the change before the stable version of Chrome reaches version 37.
For now, it is enabled by default if you are already running Chrome 37 or newer on all supported operating systems. When you reach a resource that Chrome cannot connect to, it will check if a stale cache copy is available.
If that is the case, it will display a "show saved copy" button on the error screen that you can click on to display the cached copy of the page in the browser.
The Chromium team has added three new experimental flags to the browser which you can use to enhance the feature further:
Chrome's offline mode depends on use of the browser cache. If you clear it regularly, it may be of limited use whenever resources cannot be accessed in the web browser.
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