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What are THUMB files and how to open them

Are you having problems opening a THUMB file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your THUMB files.

What is a THUMB file?

The .thumb file extension is used for a bitmap image file format, which was developed by JAlbum Software. These THUMB files are also known as JAlbum thumbnail files, which are generated by the JAlbum application. This software was also created by the same company that developed the .thumb file format.JAlbum is a photo gallery management program that was designed for Windows PCs. This software can be used to create photo albums, which can allow users to browse through several digital photos at a time through the thumbnails that are generated by this program. These THUMB files contain smaller versions of the original digital photos saved by the user in a photo album that was created through the JAlbum software.These .thumb files are not meant to be opened and viewed in digital photo viewers and photo editing applications. It's recommended to leave these THUMB files alone, in order for the JAlbum software to continue working properly.

How to open THUMB files

Important: Different programs may use files with the THUMB file extension for different purposes, so unless you are sure which format your THUMB file is, you may need to try a few different programs.

While we have not verified the app ourselves yet, our users have suggested a single THUMB opener which you will find listed below.

Last updated: March 30, 2012

Various apps that use files with this extension

These apps are known to open certain types of THUMB files. Remember, different programs may use THUMB files for different purposes, so you may need to try out a few of them to be able to open your specific file.

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File.org helps thousands of users every day, and we would love to hear from you if you have additional information about THUMB file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.