---
id: aiohttp-jinja2
version: "1.6"
license: Apache 2
license_treatment: permissive
maintenance: active
---

# aiohttp-jinja2 — jinja2 template renderer for aiohttp.web (http server for asyncio)

License: permissive · Maintenance: active · Downloads: 3.5M/mo

## What it is and what it does

aiohttp_jinja2 bridges Jinja2 template rendering into aiohttp.web applications. It provides decorators and functions to render Jinja2 templates from async request handlers, passing context dictionaries into templates and returning rendered HTML responses. The package handles setup of the Jinja2 environment within an aiohttp application, manages template loading, and supports both simple decorator-based rendering and more complex scenarios where you need to set custom response headers or perform additional processing.

The package is designed for developers building async web applications with aiohttp who want to use Jinja2 for server-side template rendering. It supports function-based and class-based view handlers, context processors for shared template data, custom filters, and async rendering functions. The integration is straightforward: initialize the Jinja2 environment once during app setup, then decorate handlers or call render functions to produce responses.

Use it for:

- Render HTML templates from aiohttp request handlers using the @template decorator for simple cases.
- Build dynamic web pages where handlers return context dictionaries that populate Jinja2 templates.
- Set custom response headers (e.g., Content-Language) while rendering templates via render_template().
- Share template data across multiple handlers using context processors.
- Apply custom Jinja2 filters and extensions to template rendering in async web applications.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Integrates Jinja2 template rendering into aiohttp.web applications, allowing you to render HTML templates from async request handlers with context data.

Yes. The package is stable (Production/Stable status), actively maintained, has no known vulnerabilities, and solves the common need to render Jinja2 templates in aiohttp applications. Install friction is low, and the Apache 2 license poses no restrictions. Use it if you're building an aiohttp web application and want server-side template rendering.

## Install

pip install aiohttp-jinja2
uv add aiohttp-jinja2
poetry add aiohttp-jinja2

## Installing aiohttp-jinja2

Before you install: Low friction install with just two runtime dependencies (aiohttp and jinja2). The package is actively maintained with a recent release in 2023 and ongoing repository activity.

License in practice: Licensed under Apache 2, a permissive license that allows commercial and private use with minimal restrictions—suitable for most projects.

Quickstart:

pip install aiohttp-jinja2

import aiohttp_jinja2
import jinja2
from aiohttp import web

app = web.Application()
aiohttp_jinja2.setup(app, loader=jinja2.FileSystemLoader('/path/to/templates'))

@aiohttp_jinja2.template('tmpl.jinja2')
async def handler(request):
    return {'name': 'Andrew'}

web.run_app(app)

## Package facts

- License: Apache 2 (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 3.5M/month (top 5,000 on PyPI)
- Known vulnerabilities: none known

## Tags

jinja2 templates aiohttp, async template rendering, aiohttp web templating, jinja2 aiohttp integration, render html templates asyncio, async-web, template-rendering

[View on SkillFed](https://skillfed.io/packages/aiohttp-jinja2) · [View on PyPI](https://pypi.org/project/aiohttp-jinja2/)