Debugging

When TYPO3 frontend debug mode is active, the Handlebars renderer emits additional debug output for individual template tags. This makes it easier to localize rendering errors during development.

Note

Debug output is only produced by the built-in HandlebarsRenderer. Custom renderer implementations do not inherit this behaviour unless they implement it explicitly.

Via TypoScript

# Enable debug mode
config.debug = 1

# Disable debug mode
config.debug = 0

Via system configuration

config/system/additional.php

// Enable debug mode
$GLOBALS['TYPO3_CONF_VARS']['FE']['debug'] = true;

// Disable debug mode
$GLOBALS['TYPO3_CONF_VARS']['FE']['debug'] = false;