Convert THUMB to JPG

What are THUMB files?

Various .thumb files are not unified in a standard format and are often just resized images of the original .jpg pictures that act as thumbnails. These are used to speed up the loading of previews of pictures in galleries, and many platforms or tools generate these automatically from every picture in the folder. You can find these files with many different file extensions, including .thumb, .thumbnail, .thmb, and probably many other variants.

There are several reasons why users may be looking for a thumb to jpg conversion, but often the roots of it come from the fact that they have no idea how these files work.

Is it possible to recover the original JPG pictures from .thumb files?

Recovering the original pictures from the thumbnails is impossible because these are already resized/compressed and do not contain the original resolution. The same folder that contains .thumb files should also have the originals. If you lost the data and only .thumb files are left, only backup recovery can help.

How do I convert thumb files to JPG?

No conversion is required; likely, your files are already JPEGs with an altered file extension. Rename it back and see if you can view the image.