Django Comment – Add Notes Inside Templates Without Rendering (2025 Guide)

Introduction – What Is a Comment in Django Templates?

Django comments are used to insert non-executing notes or temporarily disable code within templates. These comments are invisible in the final HTML output, making them perfect for explaining logic, debugging, or future development references.

In this guide, you’ll learn:

• How to write comments in Django templates
• The difference between inline and block comments
• Why and when to use them
• Best practices for clean, maintainable templates

Basic Comment Syntax

{# This is a single-line comment #}

This comment is not rendered in the browser and has no effect on page output.

Real Example

<h1>{{ post.title }}</h1>
{# Show the post content only if it's published #}
{% if post.is_published %}
  <p>{{ post.content }}</p>
{% endif %}

✔️ Use comments to annotate logic without cluttering your HTML output.

When to Use Django Comments

• Add developer notes in templates
• Temporarily disable blocks of HTML or Django tags
• Mark TODOs or explain complex logic
• Aid future debugging or team collaboration

Django Comments vs HTML Comments

Important:
Django comments are processed server-side
HTML comments are sent to the browser (and viewable by users)

What You Cannot Do

• Django does not support multi-line comments like Python’s """..."""
• You cannot nest comments: {# {# nested #} #} ➝ Syntax error
• You cannot execute logic inside a comment block

Best Practices

• Use comments to explain logic, loops, or conditionals
• Avoid excessive commenting on obvious code
• Don’t rely on comments to hide sensitive content—use view-level logic
• Clean up temporary comments before production deployment

Summary – Recap & Next Steps

Key Takeaways:

• Use {# ... #} to write invisible comments in Django templates
• Ideal for notes, explanations, and disabled code blocks
• Unlike HTML comments, Django comments do not appear in page source

Real-World Relevance:
Commenting your templates boosts team collaboration, debugging efficiency, and future maintainability without impacting frontend performance.

Frequently Asked Questions (FAQ)

Do Django comments appear in the page source?

No. They are stripped out during template rendering.

Can I comment out a whole block like {% if %}...{% endif %}?

Yes, wrap the entire block inside {# ... #}:

{# {% if condition %} ... {% endif %} #}

Can I use comments inside loops or conditionals?

Yes, comments can be placed anywhere in a template.

Do Django comments support variables?

No. They’re static notes and do not render or evaluate anything.

What’s the main difference between {# #} and <!-- -->?

{# #} is invisible in browser source code; <!-- --> is not.