# Pebble Developer Site · Development Guide ## Handlebars Templates In order to reduce the size of the JS of the site, we are now pre-compiling the Handlebars templates and just using the runtime Handlebars library. If you change, add or remove from the templates, you just recompile them into the file at `/source/assets/js/templates.js`. There is a bash script at `/scripts/update-templates.sh` that you can use to generate this file.