Maximum Item Size in Indexeddb

Maximum item size in IndexedDB

I don't think there's a specific limit for a size of a single item, only a global limit.

The rules regarding the global limit have changed since this answer was originally written. The up-to-date docs are on MDN - depending on the available disk space, the "group" limit (for the given domain, including all of its subdomains) can range from 10 MB to 2 GB.

The older answer - obsoleted with the release of Firefox 38 (2015-05), which removed dom.indexedDB.warningQuota:

From an answer by mbrubeck at support.mozilla.com (I've replaced the links he provided with perma-versions):

By default in Firefox 4, a site can use up to 50MB of IndexedDB storage. If it tries to use more than 50MB, Firefox will ask the user for permission: http://mxr.mozilla.org/mozilla-central/source/modules/libpref/src/init/all.js#101
In Firefox for mobile devices (Google Android and Nokia Maemo), Firefox will ask for permission if a site tries to use more than 5MB: http://mxr.mozilla.org/mozilla-central/source/mobile/app/mobile.js#571
[...]
If the user grants permission for a site to exceed the 50 MB IndexedDB quota, then as far as I know Firefox does not impose any more limits. The only limits on the size of the IndexedDB database will be the user's disk space and operating system.
The localStorage quota is 5000KB, and there is no way for a web site to ask the browser for permission to store more than that amount in localStorage.

is there any size limit when using indexedDB in chrome browser?

As per the documentation, Chrome will reserve 1/3 of the disk for offline storage. This means if a disk is 99GB large, Chrome will reserve 33GB of storage for offline storage. I would imagine if the usable space is less than that that Chrome adjusts however much it claims to suit.

If an origin is not used often, in cases where the disk is running out of space, Chrome will delete an entire origins' offline storage. An origin can claim a maximum of 20% of the pool that Chrome has, meaning that on the aforementioned disk with 33GB of storage allocated to Chrome, you can only use 6.6GB of storage.

It's recommended though that you don't rely on having a lot of storage to play with. You should handle cases where Chrome denies you the ability to write offline storage, just like with any other app. Chrome will let you know when you attempt to write to offline storage, that you're out of storage.

What is the maximum size of an indexedDB database in IE10

For IE10 you can find an awnser here. You will see that the normal limit is 250mb, but as user you can increase it until 999 mb per domain. How to is described in the post.

localStorage Size Limits... What are the options?

localstorage limits are not tied to the javascript framework, but to the browser you're using. Currently specs are suggesting to limit the storage space to 5MB and this is the space maximum available on modern browser

On older versions of internet explorer (IE<8) userData behaviour (which mimics the localstorage) has a limit of 128kb for page (512kb is the maximum amount for an intranet page)

anyway for a complete list see http://dev-test.nemikor.com/web-storage/support-test/

Maximum Item Size in Indexeddb