Show / Hide Grids and Guides September 14, 2016. Posted in: Tip Of The Day. Press Ctrl (Mac: Command) ; (Semicolon) to show/hide Guides. Press Ctrl (Mac: Command) ‘ (Apostrophe) to show/hide Grids. « Previous Photoshop Tip: | Next Photoshop Tip: » Get The Tip of The Day in Your Inbox! Sign-up for the PTC Newsletter to receive a weekly re-cap of the Tips of The Day. That way you'll never miss a tip. You'll also get instant access to the Subscriber Only Tutorials! Enter your email below to sign up! Your Email Address: You Can Also Get Daily Tips On Your Feed! Every Photoshop Tip of The Day is posted in our Facebook & Google Plus, Twitter, LinkedIn, and Pinterest pages.