Opening a THUMBS File

The THUMBS file type is primarily associated with Windows 10 Mobile.

THUMBS	File extension: THUMBS
	File type:	thumbnail file

What is a THUMBS file?

THUMBS files mostly belong to Windows 10 Mobile by Microsoft. Thumbnail files are reduced-size image file versions for picture and video files for indexing puproses. Their small file size makes it easier to organise them. The THUMBS file format is used to store thumbnail files in the Windows 10 Mobile operating system. While the format may be used by the operating system to save thumbnails on a regular basis, several customers reported a possible bug in the Camera app which caused all their pictures to be stored as thumbnails instead of full-resolution image files. Files with the THUMBS extension are different from the Windows thumbnail cache files, which have THUMBS as the file name and DB as the extension.

How to open a THUMBS file

You need a suitable software like Windows 10 Mobile to open a THUMBS file. You need a suitable software like Windows 10 Mobile from Microsoft to open a THUMBS file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your THUMBS file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a THUMBS file directly in the browser:. Just drag the file onto this browser window and drop it.

Online THUMBS Text Viewer

Choose your .thumbs file to analyze

or drag and drop it here

Online File Viewer

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Unable to Open a .THUMBS File? Quick Solutions:

THUMBS files can come from different programs and aren't universally openable.

Identify the Source: These files often come from Windows 10 Mobile users or Microsoft systems caching image previews.
Check the Header: Open the file in a text editor or hex viewer to inspect the first bytes.
- FF D8 or 89 50 implies a standard JPEG or PNG image.
- Unreadable binary data usually implies a proprietary system cache file.
Use the Original Software: The original program is usually required; try viewing them on a Windows 10 Mobile device, using Microsoft Windows, or ask the sender if uncertain.
Use this Webpage: Drag and drop your file into our viewer to detect the format, extract readable text/metadata, and preview when possible.

Technical Data for THUMBS File Extension

a thumbs thumbnail file is a special file format by Microsoft and should only be edited and saved with the appropriate software.

How to solve problems with THUMBS files

Associate the THUMBS file extension with the correct application.
Update your software that should actually open thumbnail files. Because only the current version supports the latest THUMBS file format. Search, therefore, e.g. on the Microsoft manufacturer website after an available Windows 10 Mobile update.
To make sure that your THUMBS file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .THUMBS file online - secure, fast, and no downloads needed.