This will install the libxml2 library, which includes xmllint.
Open terminal.
If you prefer not to use a package manager, you can manually download the binaries. Traditionally, these were maintained by Igor Zlatkovic How To Install Xmllint Windows
To search for the package later (if unsure), you can use: This will install the libxml2 library, which includes
Configuring Environment Variables (For Manual & Git Methods) This will install the libxml2 library