The LinkedIn logo places the lowercase letters “in” inside a blue square.
LinkedIn uses the letters as a compact visual abbreviation of its name. The familiar version combines a blue square containing “in” with the company wordmark, although the standalone square is also widely used as an app icon and social-media mark.
LinkedIn was founded in 2003 as a professional networking service. Its branding emphasizes a clear, restrained typographic design rather than an illustrated mascot or complex symbol. The lowercase treatment helps the compact mark remain readable at small sizes.
The letters are occasionally misread as “ln” because the lowercase i has a simple vertical form. The first character is an i, complete with its dot, so the correct reading is “in,” matching the final two letters of LinkedIn.