When comparing Unsplash vs Card Board, the Slant community recommends Unsplash for most people. In the question“What are the best new tab extensions for Chrome?” Unsplash is ranked 13th while Card Board is ranked 39th.
Ranked in these QuestionsQuestion Ranking
Pro All pictures are free for use
Pro Big open comunity
Pro High creative quality
The community is full of professional photographers.
Pro The pictures are curated by unsplash
Pro Fresh vibes
Pro Free API
JSON API for developers to find and get images, or list new images.
Pro Moderated by Unsplash
Pro Integrated in tools
Integrated in tools like Sketch, Framer, and Codepen.
Pro Open source (MIT)
Source code can be accessed at https://github.com/dotlouis/cardboard
Pro Lots of widgets
The extension has cards for apps, bookmarks, quick settings, top sites, downloads, history, session and system.
Pro Can provide system information
The extension has a widget that displays CPU and memory usage as well as storage information.
Pro Google Now style layout
The extensions has a clean customizable card-based interface.
Con Approval can take time
The approval process for uploaded photo's can take some time.
Con No interest in contributions
Photo's can be refused, apparently without any human intervention or review and get a computer generated reply stating that "the quality of the pictures did not meet the guidelines".
Con Limited customization options
While it's possible to choose which cards are displayed, there's no way to change the order of cards.