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copied!<p><strong>IndexedDB</strong> You can store images into an IndexedDB, but you would be responsible for saving them, clearing them and updating them as needed.</p> <p>Also if you need it to work on mobile devices, an IndexedDB is not what you want, as none of the current mobile browsers support IndexedDB. (Source: <a href="http://caniuse.com/#feat=indexeddb" rel="nofollow">http://caniuse.com/#feat=indexeddb</a>)</p> <p><strong>Offline Applications</strong> I would recommend instead that you use a new HTML5 feature called Application Cache. This is supported by almost all the browsers out there (Source: <a href="http://caniuse.com/#feat=offline-apps" rel="nofollow">http://caniuse.com/#feat=offline-apps</a>)</p> <p>To use it you just need to create a Website.manifest file such as:</p> <pre><code>CACHE MANIFEST # v0.0.3 2011-12-21 images/ImageThatIWantToCache.png images/SecondImage.png </code></pre> <p>Then in your web page alter the html tag to be something like:</p> <pre><code><html manifest="Website.manifest"> </code></pre> <p>Advantages: 1. The browser will automatically cache the images 2. You access the images using the original URL (i.e. /images/SecondImage.png) 3. Updating is much easier, you just drop the new images onto the web server and update the version number in the manifest file.</p> <p>You can read more about the <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/offline.html" rel="nofollow">Offline spec</a>, or just do a google search for examples.</p>

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