As you may know, we’re big fans of single-purpose tools that make your life easier. This is especially true when it comes to design, because sometimes a simple, straight-forward solution can solve the worst headaches.

We’ve given plenty of attention to apps of this category in the past, highlighting services like SnapRuler, Sip and Icon Strike. Now, we’d like to draw your attention to Red Pen.

Red Pen is a super basic Web app that lets you upload a file and share it with clients and team members for feedback. Yes, we know, there are tons of solutions out there that make this process easy, including LayervaultShipmentMockVault and even Creative Cloud. All of these services are worth a look, but if you’re searching for an extremely light-weight solution (with zero setup time) and don’t want to resort to emailing large files back and forth, you’ll want to check out Red Pen.

Screen Shot 2013 05 17 at 6.22.00 PM 730x481 Red Pen might be the fastest way to get feedback on your designs

The site’s tagline — “effing fast feedback” — says it all. After uploading your file, share your short link with your client. All they’ll have to do is click your design and leave their thoughts, as shown in the image below.

Screen Shot 2013 05 17 at 5.39.21 PM 730x386 Red Pen might be the fastest way to get feedback on your designs

Red Pen is free and you can give it a try via the link below.

➤ Red Pen

 For getting feedback on an entire site, be sure to take a peek at ZURB’s Bounce.

Image credit: Fang Guo