File Extension Library


.THUMBNAILS File Extension

  • Developer by: Google
  • Category: System Files

What are .THUMBNAILS files and how to open them?

Can't open .THUMBNAILS file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .THUMBNAILS file.

What is a .THUMBNAILS file extension?

.THUMBNAILS file extension is created by Google. .THUMBNAILS has been classified as System Files.

.THUMBNAILS is Android Thumbnails Folder

A folder with a .THUMBNAILS extension is a hidden folder stored in the sdcard/DCIM directory on select Android devices. It contains one or more .thumbdata files that store properties about thumbnail images indexed by the Gallery app to load images quicker. THUMBNAILS folders typically store .THUMBDATA3-1967290299 and .THUMBDATA3-1763508120 files.

You can navigate to the THUMBNAILS folder on an Android device using a file manager. However, you need to verify that your system displays system and hidden files in the settings.

The more images you have in the Gallery app, the larger the THUMBDATA3-1967290299 and THUMBDATA3-1763508120 files grow. They may become several hundred MBs, or in some cases, several GBs in size if you have a large number of thumbnail images in your Gallery app. The file increases in size every time a new image is added and even when an image is deleted the indexed properties of the image still remain.

To reduce the THUMBDATA3-1967290299 and THUMBDATA3-1763508120 file sizes, you need to remove images from the Gallery app then delete the THUMBDATA3-1967290299 and THUMBDATA3-1763508120 files. The files will be regenerated by the Gallery app but only for the images currently stored in the app.

How to fix problems with .THUMBNAILS files

  1. You need to update the application that you normally use to open .THUMBNAILS files. Only the latest version of the software supports the current .THUMBNAILS file format
  2. You need to check the .THUMBNAILS file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)