Katalog Buku is a book-focused website that helps readers discover titles across a wide range of genres, subjects, and publishers. Its catalog and recommendations cover fiction, novels, comics, international bestsellers, and books in languages including Arabic, English, Japanese, Korean, Mandarin, German, French, Turkish, and Russian. Readers can also explore nonfiction subjects such as finance, business, computing, communication, biography, psychology, religion, parenting, education, history, and personal development.

The site’s central service is its collection of book and novel reviews, designed to offer useful references before readers choose what to read or buy. Articles discuss titles by Indonesian and international authors, with coverage ranging from literary fiction and popular novels to self-help, investing, and history. Katalog Buku also highlights popular and recently reviewed books, monthly selections, and themed recommendations. For readers ready to find a book, the site points to selected products on Tokopedia. Its social channels and updates provide additional ways to follow new reviews and book discoveries. Overall, Katalog Buku serves book lovers seeking inspiration and informed recommendations.