This can highly depend on what your original file type is.
Here is how to turn any regular image (gif, bmp, etc) into a jpeg.
Open Paint. Paint comes pre-installed on your PC. ...
Open your image in Paint. Make sure the image is on your computer. ...
Click “File,” then click the arrow next to “Save As.” A list of image types, including JPEG, will appear.
Click “JPEG.” ...
Rename the file if you wish, then click “Save.”
You can also use photoshop for this which would be much easier. But knowing the original file type makes it easier too.
