The Waifu2x website is a web-basedIf your photos look noisy, you can use this tool to reduce the noise of your pictures (Noise Reduction) and save your computer the trouble of installing software and the skill of using it.

Instructions for use: Use your browser to enter Noise Reduction: Reduce the image noise, Upscaling: Use multiplier, under the preset condition parameter, press [Submit], then a new browser window will be opened to present the image after it is there.