Zig templates turn missing fields into compiler errors

Lukáš Lalinský’s zt template library converts HTML-like templates into Zig during the build. Template parameters use application types, so misspelled fields and incorrect arguments fail compilation. Generated functions write directly to a writer; dynamic text and attributes are escaped, and URL attributes reject dangerous schemes. These defaults reduce common injection mistakes but do not make every template or application automatically secure.

Lukáš Lalinský · Oct 11, 2026

Why it matters

An approachable example of using compile-time checking to improve server-rendered web development.

More context

Try the linked zt project in a small Zig application. The author’s standalone writer example has a cancellation-related error-handling caveat; read the linked discussion before copying that pattern. Dusty’s render wrapper handles the cited issue.

Keep in mind

This is the author’s newly introduced library, not a demonstrated compatibility or security guarantee across all Zig applications.

Original read