The site came online in 1996 serving as a holding page for sales links and press releases related to comic books under various domain names, before becoming ComicBook.com in 2004.

ComicBook.com began as a holding page containing sales links and press releases related to comic books and had various names used by various companies: in 1996, American Entertainment used it for their websites, Smash, Another Universe, and Mania Magazine.

[1] In 2007, Joe Blackmon and a business partner founded ComicBook.com as a comic book news site,[2] and by 2010, it was co-owned by William King of Magellen Press.

[1][6] In April 2024, Viscardi left ComicBook.com to become VP of Business Development at Image Comics, with the site then being led by assistant managing editor Joe Schmidt.

[8] The next month, Ben Kendrick was revealed to have joined Savage Ventures and was hired as the editorial director of ComicBook.com, after previously working at Static Media for Screen Rant, Comic Book Resources, and Collider.