Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

While backing up my google chrome User Data folder, I was looking at some of the files in the Local Storage folder, they all seem to have a website URL as part of the name, and they start out with SQLite format 3 on the first line.

I wasn't aware that chrome used SQLite 3 to store anything, but I am curious, is this something that each site is setting to store in local storage or is it something that google just does on it's own?

The folder I am talking about on a Windows 7 install is @

"C:\Users\USERNAME\AppData\Local\Google\Chrome\User Data\Default\Local Storage"

share|improve this question
up vote 5 down vote accepted

The Local Storage and the SQLite are there to provide the proposed (W3C) Web Storage, and Web SQL Database, originally intended for the HTML5 spec.

From Wikipedia:

Web Storage and DOM Storage (Document Object Model) are web application software methods and protocols used for storing data in a web browser. Web storage supports persistent data storage, similar to cookies, as well as window-local storage.

Web storage offers two different storage areas—local storage and session storage—which differ in scope and lifetime. Data placed in local storage is per domain (it's available to all scripts from the domain that originally stored the data) and persists after the browser is closed.


Web SQL Database is a web page API for storing data in databases that can be queried using a variant of SQL.

The API is supported by Google Chrome, Opera and Safari, but will not be implemented by Mozilla Firefox which instead supports the Indexed Database API.

The W3C Web Applications Working Group ceased working on the specification in November 2010, citing lack of independent implementations (not using SQLite as the backend) as the reason the specification could not move forward to become a W3C Recommendation.

share|improve this answer
I think they were wise to put that on hold -- SQL server software choices can become very political and lead to ridiculous flame wars. At the very least, I do hope that people from the major open source SQL servers like PostgreSQL, SQL Lite, MySQL, and others get involved if demand picks up. – Randolf Richardson Nov 12 '11 at 1:18

One thing stored there is malware—or just nuisance ware, if you insist—in the form of omiga plus. I am pretty ignorant of matters technical, but I discovered this by an omiga search.

(1) http_isearch-omiga-plus.com_0.localstorage and (2) . . .0.localstorage-journal

Anyone who has been afflicted with omiga plus knows how infuriatingly obstructive it is and how hard to get rid of. It IS “omiga,” by the way, not “omega,” to which it is auto-corrected by Word, as the omiga makers no doubt knew and took advantage of.

share|improve this answer
The auto-edit took the asterisks away from "an omiga search." I restored them here, but they may well disappear again. This kind of auto-idiot-edit complicates communication unnecessarily or worse. – guest Jul 22 '15 at 0:10

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .