We're designing a website for CrummyPhotosCorp, who sends us a 150-pixel-tall image to put in an area that's 200 pixels high. We bring this photo into our Sketch comp and size it to fit the space. It doesn't look great, but what can we do?
Within Sketch, we make other adjustments to the photo, such as cropping the sides so you can't see a competitor's logo. Unfortunately, when we export the photo from Sketch, the saved file is 200 pixels tall—50 pixels more than the input photo.
The one advantage of low res imagery is that it saves bandwidth, and we don't want to lose this by adding fake pixels to the output file. Is there a way to force Sketch to never output at a higher resolution than the input photo?