Preface
Suddenly found that when Win10 saves pictures on the web page, it is found that the format of the picture is not ".jpg", but ".jijf". I couldn't adapt to it for a while. After my research and testing, I successfully changed the image save format back to ".jpg" "format.
1. First press the "Win key + R key" on the keyboard, the "Run" dialog box pops up, enter "regedit", and then press Enter to enter the registry editor.
2. Open hierarchically according to the corresponding path, or copy and paste it into the address bar:
HKEY_CLASSES_ROOT\MIME\Database\ContentType\image/jpeg
3. Double-click to open the "Extension" option, in the "Edit String" dialog box, change "jfif" to "jpg", and finally click OK.
4. Save the picture again in the future in ".jpg" format.
