Unfold is a utility app that extends macOS Quick Look functionality to enable previewing of folders, archives, code files, and various document formats directly from Finder. The app provides instant access to file contents without needing to open dedicated applications.

Unfold supports previewing folders and numerous file extensions including .7z, .bash, .bz2, .c, .cbr, .cbz, .cfg, .conf, .cpp, .env, .epub, .go, .gz, .h, .hpp, .ini, .java, .js, .jsx, .json, .kt, .kts, .m, .markdown, .md, .mdown, .mdwn, .mermaid, .mkd, .mkdn, .mm, .mmd, .php, .plist, .properties, .py, .r00, .rar, .rb, .rs, .sh, .sql, .swift, .tar, .tar.bz2, .tar.gz, .tar.xz, .tbz, .tbz2, .tgz, .toml, .ts, .tsx, .txz, .wsdl, .xml, .xsd, .xz, .yaml, .yml, .z01, .zip, .zipx, and .zsh. It features clean syntax highlighting for code files and allows inspection of archives without extracting them.

The app works as a lightweight extension that integrates natively with macOS Quick Look. It operates completely offline after activation, though the free trial may require an initial online connection for verification purposes.

Unfold enables users to quickly preview folder contents, examine archive files without decompression, read source code with proper syntax highlighting, view markdown documents, and access various file formats instantly. This saves time by eliminating the need to open multiple applications for different file types.

Unfold supports macOS 14 and newer versions. Each license covers up to 3 devices, and purchasing includes lifetime updates. The app is designed for macOS users who frequently work with various file types and need quick preview capabilities.