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    <p>Depending on what you need to do with the cached files, you could simply use the FileIO API to save the binary to your extension's sandbox environment. Just storing the filepath to the original file probably won't work as the API can only read within it's sandbox [unless your choosing the files yourself through an input].</p> <p>If necessary, you can add the "unlimitedStorage" Permission (more at the <a href="http://code.google.com/chrome/extensions/manifest.html#permissions" rel="nofollow">developer documentation</a> )to your <strong>manifest.json</strong> in order to override the storage limitations.</p> <pre><code>"permissions": [ "unlimitedStorage" ], </code></pre> <p>This will only apply to the File I/O (temporary/persistent) and Web SQL (temporary only). Due to it's synchronous implementation, <strong>localStorage has a maximum of ~ 2700000</strong> characters (as it is stored as UTF-16), which won't be increased by setting this permission.</p> <p>With the File API and Chrome 13+, you can request a certain amount of quota (see <a href="http://updates.html5rocks.com/2011/11/Quota-Management-API-Fast-Facts" rel="nofollow">here</a> and <a href="https://groups.google.com/a/chromium.org/group/chromium-html5/msg/5261d24266ba4366?pli=1" rel="nofollow">here</a> for full example). This has been introduced to work for Web apps and works without setting the <em>unlimitedStorage</em> permission. (However, if the permission is set, the user is currently not asked to allow the storage request) </p> <pre><code>webkitStorageInfo.requestQuota( webkitStorageInfo.PERSISTENT newQuotaInBytes, quotaCallback, errorCallback); </code></pre> <p>In my experiments, this seems to be the only way to <strong>persistently</strong> store large amounts of data.</p>
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    1. POGoogle chrome extension - howto access and store local files for later use
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    1. COSorry, just seen your answer today. Using "unlimitedStorage" doesn't work, since it's only usable for WebSQL or Application Cache (for offline usage of HTML5). But saving the file to the extensions sandbox might be a great idea. Doesn't had that one before ...
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      1. USCarsten Wilhelm
    2. CORight, sorry. Currently, the only **persistent** storage seems to be the File IO. I edited my post to reflect this with more information
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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