To upscale an image means to increase its resolution, or the number of pixels per inch. This can be done using a variety of methods, but the most common is to use a software program.

To upscale an image using a software program:

1. Open the image in the software program.
2. Go to the “Image” menu and select “Image Size”.
3. In the “Image Size” dialog box, enter the new desired width and height for the image.
4. Under “Resample”, select a resampling method. The best resampling method to use will depend on the type of image you are upscaling. For general-purpose upscaling, I recommend using the “Bicubic” method.
5. Click “OK” to upscale the image.

Here are some additional tips for upscaling an image:

• Use a high-quality image. The better the quality of the original image, the better the results will be.
• Don’t upscale the image too much. Upscaling an image too much can make it look blurry or pixelated.
• Use a noise reduction filter. If the image has any noise, you can use a noise reduction filter to reduce it before upscaling.
• Save the image in a high-quality format. Once you have upscaled the image, save it in a high-quality format, such as PNG or TIFF.