Updated: March 01, 2025

.DATABASE_UUID File Extension

There is only one filetype that uses .DATABASE_UUID file extension and it is DATABASE_UUID.

DATABASE_UUID

File category:	System Files
Developer:	Google
Open with:	Vim (+7 more)
Platforms:	Windows, macOS, Linux, iOS, Android, ChromeOS, iPadOS

A DATABASE_UUID file is a hidden file found on some Android devices. It is usually stored in the .THUMBNAILS folder and contains a unique identifier called a UUID (Universally Unique Identifier). This identifier helps Android manage and track thumbnail images. The UUID in these files is a 32-character code written in the format xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx.

The term DATABASE_UUID refers to a database-related unique identifier. Android uses this file to check whether the thumbnails in a .THUMBNAILS folder are current or outdated. If the UUID in the DATABASE_UUID file does not match the system's expected value, Android automatically deletes and recreates the thumbnail images and updates the DATABASE_UUID file with a new identifier.

The DATABASE_UUID system was introduced in Android devices to manage thumbnail caches more efficiently. It helps prevent errors and ensures that image previews stay accurate and up-to-date. While the exact release date is not publicly specified, it has been part of Android's thumbnail management for several years.

How to Open .DATABASE_UUID as DATABASE_UUID

DATABASE_UUID files are plain text files, meaning you can open them with any text editor. On Android devices, apps like QuickEdit can display the file's contents. However, it is not recommended to change the UUID, as modifying it may cause Android to regenerate thumbnails incorrectly or lead to other system issues.