Adapted from the canonical English UIX documentation by Lint-Free-Technology/uix, CC BY 4.0. Source: dev / 9.0.0-beta.2, revision 26e54e6, reviewed 22 October 2026. This source mirror may describe preview behavior beyond stable 8.4.0. Markup adapted for this site; the original documentation remains authoritative.

Debugging Templates

You can debug UIX Jinja2 templates by placing the comment {# uix.debug #} anywhere in your template. You will see debug messages on template binding, value updated, reuse, unbinding and final unsubscribing. Any template is kept subscribed in cache for a 20s cooldown period to assist with template application, which can bring a slight speed improvement when switching back and forth to views, or using the same template on cards on different views.