Win8 set the picture to open the program by default

For this we have two sets of methods, first look at the simple one. Find the image file we want to open, right click on the file and select "Properties". In the properties we can see the option "Open with". At this time, click "Change" in the pop-up list of programs to select the tool you want to use.
Open File Properties

After confirmation, we will find that all files of the same type are modified by default to be opened with this tool. However, this method has a drawback, that is, it can only be uniformly modified for the file format. If some images use an uncommon format, they need to be modified separately.
Select the program you want to default to

Let's take a look at the second method, which provides the possibility of batch processing. Open “Default Programs in the Control Panel and select “Associate File Types or Protocols with Specific Programs in their list”. Here we select all the common formats (extensions) of the image files, and then click “change program'; you can select the specified program in the list.
Open default program association

The advantage of this method is that it can batch process the default program, but the user needs to have a certain understanding of the file format, so we generally recommend using the first one for quicker and more convenient. Method.
Directly associate extensions with programs