When should I use IndexedDB?

Question

You might use IndexedDB to store structured data that's unrelated to any data on the server. An example might be a calendar, a to-do list, or saved games that are played locally. In this case, the application is really a local one, and your web site is just the vehicle for delivering it.

Is IndexedDB useful?

indexedDB is particularly useful if you want a client which can be used without an internet connection, which is becoming increasingly important as browser based applications replace more and more desktop applications.

Should I use IndexedDB or LocalStorage?

In both Firefox and Chrome, IndexedDB is slower than LocalStorage for basic key-value insertions, and it still blocks the DOM. In Chrome, it's also slower than WebSQL, which does blocks the DOM, but not nearly as much.

Why is it better to use IndexedDB instead of LocalStorage?

localStorage is useful for storing smaller amounts of data, it is less useful for storing larger amounts of structured data. So if you want to store significant amounts of structured data then IndexedDB is what you should choose.

Is it safe to use IndexedDB?

The short answer is IndexedDB is vulnerable to malware and physical takeover attacks. It's better than many options because cryptography is done outside the browser execution environment, but it's not totally secure.

Expert · Answer