Facebook has frequently changed the way it displays photos. Now Facebook is rolling out its greatest photo update yet.

The social network last updated its photo viewer in February. That photo interface appears in a pop-out box with the caption information and ads displayed in the right sidebar. Facebook Timeline was illuminated in the backdrop. Facebook will display photos in high-resolution and allow full-screen viewing of images. The pictures will be crisper, higher quality and can be up to four times larger than before, Facebook announced Thursday.  Chrome users, as well as those on the latest version of Firefox, can view full screen photos by clicking the arrow in the top right corner.

Facebook knew the photos on its site weren’t the best quality, however. Facebook engineer, said in a blog post he started working on the photo updates after he noticed the coloring was off in his photos.

Internet photos display in sRBG, but Mack explains that turning RGB display on can slow the site down. Standard definition photos can slow load time on Facebook by 30%. To make sure high definition photos won’t slow down the site, image scientist Apostolos “Toli” Lerios found and removed the parts of the color profile that aren’t needed to display an image.