File Extension Database

Open THUMBNAIL File

THUMBNAIL format and extension files are used on different platforms, such as Google Android, and it works as a thumbnail cache, and files with this extension can be used by programs compatible with the Android platform as well as Windows, Linux or Mac.

The purpose of the THUMBNAIL files is to be able to view in miniature, all the photos and images that we have on our device. These files are generated automatically and are kept in the cache or temporary memory of the equipment.

It is important to know that THUMBNAIL files take up unnecessary space and that it is possible to delete them without causing any problems, that is, without deleting the original image.

It is also possible to configure the equipment to prevent THUMBNAIL files from being generated automatically.

It is possible that on desktop operating systems you will find equivalent formats, such as THUMB.

To work with THUMBNAIL files it is necessary to have one of the following programs:

How Can I Open THUMBNAIL File on Windows

We researched and learned that the best way to open THUMBNAIL file is to find a THUMBNAIL file in question in Windows OS File Explorer and double click on it to launch the corresponding application.
If a THUMBNAIL file is not opened in an application and you instead get a "Windows can't open a file" error message you should try looking for an application which can open the file in question.
If you know the application which can open THUMBNAIL file then run it and see if there is a File->Open main menu option in the application.
If you don't know the application which function as THUMBNAIL file opener then try to search online for "THUMBNAIL viewer", "application to open THUMBNAIL file" or "open THUMBNAIL file" queries in the search engine you like.
Install the application you found and check if it can open THUMBNAIL file

How Can I Open THUMBNAIL File on Mac OS

We recommend to find a THUMBNAIL file in question in Mac OS Finder and double click on it to launch the corresponding application.
If a THUMBNAIL file is not opened in a Mac OS application and you instead get a "There is no application set to open the file" error message you can click on "Search App Store" in the error dialog and Mac OS will show you applications compatible with THUMBNAIL file.
If you know the Mac OS application which can work as THUMBNAIL file opener you can choose the "Choose Application..." option in the error box to associate the file extension and open THUMBNAIL file in it.
If you don't know the application which can open THUMBNAIL file then try to search for "THUMBNAIL viewer", "application to open THUMBNAIL file" or "read THUMBNAIL file" queries in the online search engine you like.
Install the application you found and check if it can read THUMBNAIL file

How Can I Open THUMBNAIL File on Android

If you downloaded a THUMBNAIL file on Android device you can open it by following steps below:

In the Android apps list on your Android device find "My Files" or "File manager" app and tap to start it.
Tap on "Downloads" folder inside the app.
You should see your downloaded THUMBNAIL file in that folder.
Tap on the file. If Android device supports opening the file you downloaded it will open in the corresponding app.
If file does not open you can look for the corresponding app that can open the file by searching Android App Store for the "THUMBNAIL".
If you cannot open the file with the apps from Android App Store it is possible that the file could only be opened on desktop platforms such as Windows or Mac OS. Try searching for "THUMBNAIL viewer", "THUMBNAIL file reader" online and see if any desktop applications can open it.
It is also possible that the file you downloaded is outdated and is no longer supported.

How to Open THUMBNAIL File on iPhone or iPad

To open THUMBNAIL File on iOS device follow steps below:

We advies to open Files app on your iPhone or iPad device. You can find it by swiping down on the home screen and typing "Files" in the search bar.
Tap on the Downloads folder on the Files app home screen.
You will see all files that you recently downloaded. Tap on the THUMBNAIL file to view it.
If you have the right app that can open it it will automatically launch and open your file.
If you don't have the app which can open it you need to serch Apple app store for "THUMBNAIL". This way you can find apps which can open THUMBNAIL files.
If this doesn't help it is possible that your file could be opened only by the desktop application. To find an app which can open it on desktop look for "THUMBNAIL viewer" or "THUMBNAIL file" online in your favorite search engine.