http://pagesperso-orange.fr/pierre.g/xnview/endownloadwin32.html
Finding a decent replacement for the discontinued shell image viewer 'Picaview' has been something of a holy grail quest for me lately. I've searched and searched and searched, and even considered coding my own, probably from tutorial code off codeproject.com since i'm not a very apt C++ coder.
Lucky for me, then, that I found XnView. Image preview in the context menu is something that, to my mind, can never fully be replaced by thumbnails or image icons. My favorite file view in explorer or any file manager is the 'details' view. This view leaves little room for image previews, and if I want to get a quick look at an image, a right click is ideal. Several right click imageviewers are out there, but few match the mighty, tiny picaview that is no longer on the go. Most offer previews, but none I found ever offered PSD previews.
Until now.
XnView is actually the name of a fully fledged image viewing / editing app, but the homepage also has a download link for XnView Shell Extension, which doesn't require the full XnView to be installed. It's neat, customizable, converts images, does PSD previews, and isn't stuck needlessly in a submenu that requires extra navigation.
It's all I need in an extension viewer.