First, notice that this photo is wider than it is tall. It is considered to be a "Landscape" photo.
Next, in Windows File Explorer, right click on the filename and select "Properties" from the menu list. A dialog box will open and then click on the "Details" tab. Scroll down to the "Image" section. Notice that the width of the photo is pixels and the height is pixels. The photo is too small to be printable with good quality to a 6” X 4” paper print. How do I know this?
A commercial quality printer prints at 300 DPI (or dots per inch). We just need to calculate the minimal number of pixels needed to print to a 6” wide photo paper print.
If we want to print to a 6” wide paper print, we just need to multiply this width by 300. The minimum number of horizontal pixels needed would be 1800 to print with good quality. To print onto photo paper, the minimal dimensions for the image needs to be pixels horizontally and pixels high.
The image above is 1290 pixels across and so print quality will be affected since we need a minimal of 1800 horizontal pixels. What would the print look like if printed? It would have some mild pixelation and blurring.
To summarize, simply take the largest side of your photo and multiply times 300. A 6” paper print would need to have a minimal of 1800 pixels to make a good paper print. If the dimensions of your image are much greater than the 1800 pixels, the image will still print fine. You could reduce the size of the image to something around the minimal pixels needed if you want to.
