How To Install Xmllint Windows -

During the package selection step, search for libxml2 and check the box next to libxml2 (and optionally libxml2-devel).

| Method | Difficulty | Best For | |--------|------------|-----------| | Pre-built binaries | Easy | Single‑file, no extra tools needed | | Chocolatey | Easy | Package manager users | | MSYS2 | Medium | Developers already using Git Bash/MinGW | | WSL | Medium | Linux fans on Windows | | Cygwin | Medium | Users needing many Unix tools |

For most Windows users, Method 1 (pre-compiled binaries) or Method 2 (Chocolatey) is the fastest and most reliable. If you work regularly with Unix tools, MSYS2 or WSL will serve you better in the long run.

xmllint --valid --noout --dtdvalid schema.dtd document.xml

xmllint --noout file.xml

No output means valid. You’ll see errors if not.