Having problems opening a THUMB file?

We have programs that can open or convert your THUMB files.

Opening THUMB files

Did your computer fail to open a THUMB file? We explain what THUMB files are and recommend software that we know can open or convert 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.

Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

About File Extension THUMB

File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about the THUMB file format or software that uses files with the THUMB suffix, please do get in touch - we would love hearing from you.