I have some work to showcase: images which are screenshots of work which are online. However when arranging these screenshot images in Illustrator, Photoshop and InDesign, they all appear to be pixelated. I do not have the raw images because it is work which is made online. Is there anyway I can use these screenshots to not be pixelated?
If you have screenshot software such as SnagIt for Windows or SnapzPro for the MacOS you can set the screenshot to be enlarged.
I customarily take screenshots at 400%.
You can then place the screenshots into Indesign, or Illustrator, and reduce the images there. This essentially increases the pixel density of the images.
If using Photoshop you can easily resize the image with Resample unchecked and get a higher PPI image which appear much cleaner when printing. If you do need to resample the image, using the Nearest Neighbor resampling method often result in the best quality.