THUMB File Extension

What is THUMB file?

THUMB files are thumbnails containing bitmaps. They are created with the JAlbum application. Both the THUMB format, and the mentioned software, were developed by the JAlbum Software company.

THUMB file is generated on the basis of a full-size image, and it is used to depict it in the program’s gallery, as a preview. Utilizing thumbnails enables more comfortable browsing through a gallery which contains many images. THUMB files enable to place multiple images on a single page, which saves some user’s time.

THUMB format is proprietary, therefore, the structure of files and storing method are strictly defined by the organization which created it.

Programs which support THUMB file extension

The following list contains programs grouped by 3 operating systems that support THUMB files. Files with THUMB suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Updated: 01/29/2024

How to open file with THUMB extension?

There can be multiple causes why you have problems with opening THUMB files on given system. On the bright side, the most encountered issues pertaining to JAlbum Thumbnail Format files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. We have prepared a listing of which will help you resolve your problems with THUMB files.

Step 1. Get the JAlbum

Problems with opening and working with THUMB files are most probably having to do with no proper software compatible with THUMB files being present on your machine. To address this issue, go to the JAlbum developer website, download the tool, and install it. It is that easy On the top of the page a list that contains all programs grouped based on operating systems supported can be found. The safest method of downloading JAlbum installed is by going to developer’s website (JAlbum software) and downloading the software using provided links.

Step 2. Check the version of JAlbum and update if needed

If the problems with opening THUMB files still occur even after installing JAlbum, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of JAlbum is available. Software developers may implement support for more modern file formats in updated versions of their products. If you have an older version of JAlbum installed, it may not support THUMB format. The latest version of JAlbum should support all file formats that where compatible with older versions of the software.

Step 3. Assign JAlbum to THUMB files

If you have the latest version of JAlbum installed and the problem persists, select it as the default program to be used to manage THUMB on your device. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

Selecting the first-choice application in Windows

• Right-click the THUMB file and choose Open with option
• Select Choose another app → More apps
• Finally select Look for another app on this PC, point to the folder where JAlbum is installed, check the Always use this app to open THUMB files box and conform your selection by clicking OK button

Selecting the first-choice application in Mac OS

• From the drop-down menu, accessed by clicking the file with THUMB extension, select Information
• Find the Open with option – click the title if its hidden
• Select JAlbum and click Change for all...
• A message window should appear informing that This change will be applied to all files with THUMB extension. By clicking Continue you confirm your selection.

Step 4. Check the THUMB for errors

Should the problem still occur after following steps 1-3, check if the THUMB file is valid. Problems with opening the file may arise due to various reasons.

1. The THUMB may be infected with malware – make sure to scan it with an antivirus tool.

If the THUMB is indeed infected, it is possible that the malware is blocking it from opening. Scan the THUMB file as well as your computer for malware or viruses. If the THUMB file is indeed infected follow the instructions below.

2. Verify that the THUMB file’s structure is intact

If you obtained the problematic THUMB file from a third party, ask them to supply you with another copy. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. It could happen the the download process of file with THUMB extension was interrupted and the file data is defective. Download the file again from the same source.

3. Verify whether your account has administrative rights

Sometimes in order to access files user need to have administrative privileges. Switch to an account that has required privileges and try opening the JAlbum Thumbnail Format file again.

4. Check whether your system can handle JAlbum

If the system is under havy load, it may not be able to handle the program that you use to open files with THUMB extension. In this case close the other applications.

5. Verify that your operating system and drivers are up to date

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with JAlbum Thumbnail Format file. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle THUMB files.

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