THUMB File - opening and understanding

Did your computer fail to open a THUMB file? We explain what they are used for and recommend software that we know can open or otherwise 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

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension THUMB for different purposes.

While we have not verified the apps ourselves yet, our users have suggested 1 different THUMB openers which you will find listed below.

Suggest another file format using extension THUMB

While we know of one file format using the .THUMB file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .THUMB file.

Various viewers for this file format

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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We have not verified any software that we know for certain will work with THUMB-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with THUMB-files. If you know one, please use the 'Suggest a program' link below and tell us about it!