---
title: "Flask"
description: "Add Pulse analytics to your Flask app. Jinja2 template integration."
category: "backend"
brandColor: "#3BABC3"
officialUrl: "https://flask.palletsprojects.com"
relatedIds: ["django", "htmx", "express"]
date: "2026-03-28"
---
Add the Pulse script to your Jinja2 base template with a debug guard.
---
## Add to your base template
Use Jinja2's conditional to only load the script when `DEBUG` is off.
```html filename="templates/base.html"
{% if not config.DEBUG %}
{% endif %}
{% block title %}My Flask App{% endblock %}
{% block content %}{% endblock %}
```
For more details, see the [Flask template docs](https://flask.palletsprojects.com/en/stable/patterns/templateinheritance/).