Is there a way to increase the size of localStorage in Google Chrome to avoid QUOTA_EXCEEDED_ERR: DOM Exception 22

I’ve written a webapp that allows you to store the images in the localStorage until you hit save (so it works offline, if signal is poor).

When the localStorage reaches 5MB Google Chrome produces an error in the javascript console log:

Uncaught Error: QUOTA_EXCEEDED_ERR: DOM Exception 22

How do I increase the size of the localStorage quota on Google Chrome?

Answer

You can’t, it’s hard-wired at 5MB. This is a design decision by the Chrome developers.

In Chrome, the Web SQL db and cache manifest also have low limits by default, but if you package the app for the Chrome App Store you can increase them.

See also Managing HTML5 Offline Storage – Google Chrome.