Profile directory location

Zotero 5.0/Zotero 4.0 Standalone

You can find your Zotero profile directory in the following location:

Mac
/Users/<username>/Library/Application Support/Zotero/Profiles/<randomstring>

Note: The /Users/<username>/Library folder is hidden by default. To access it, click on your desktop, hold down the Option key, and click the Finder's Go menu, and then select Library from the menu.

Windows 10/8/7/Vista
C:\Users\<User Name>\AppData\Roaming\Zotero\Zotero\Profiles\<randomstring>
Windows XP/2000
C:\Documents and Settings\<username>\Application Data\Zotero\Zotero\Profiles\<randomstring>
Linux
~/.zotero/zotero/<randomstring>

Zotero 4.0 for Firefox

Follow these instructions to locate your profile directory.