Jinja2
A very fast and expressive template engine.
Decision gist · record as of 2026-08-14
Yes. Jinja2 is a production-stable, permissively licensed templating engine with no known vulnerabilities, minimal dependencies, and low install friction. It is the de facto standard for Python web templating and is appropriate for any project needing template rendering—from small scripts to large web applications. The 527-day gap since the last release reflects maturity rather than abandonment; the repository remains active and the package is well-maintained.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.7 or later.
- Low install friction with a single pure-Python dependency (MarkupSafe).
- The package is in Production/Stable status and receives regular maintenance, though the last release was 527 days ago, indicating a mature project with infrequent updates rather than active development.
License · maintenance · safety
permissive license (permissive) — Jinja2 is licensed under a permissive BSD license, which allows commercial and private use with minimal restrictions—suitable for most projects without legal concerns.
last release 2025-03-05 (527 days) · last repo commit 2025-06-14 · 11,735 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 718,583,427 downloads/mo, #42 on PyPI
Alternatives
Verify before relying
pip install jinja2
from jinja2 import Template
template = Template('Hello {{ name }}!')
result = template.render(name='World')
print(result) # Output: Hello World!- Performance characteristics compared to other templating engines in production scenarios.
- Practical limits on template complexity or data size for the JIT compilation and caching system.
What it is and what it does
Jinja2 is a mature, widely-used templating engine that lets you write dynamic content by embedding Python-like expressions and control flow into template files. You define templates with special syntax for variables, loops, conditionals, and macros, then pass data to render the final output. It compiles templates to optimized Python code on-the-fly and caches them for performance.
The package is built for web applications and document generation, with built-in safeguards like HTML autoescaping to prevent XSS attacks and a sandboxed mode for safely rendering untrusted templates. It supports template inheritance for code reuse, async rendering, and internationalization via Babel. Its single runtime dependency (MarkupSafe) keeps installation simple and friction-free.
Use it for
- Render HTML pages in web frameworks by separating template design from application logic.
- Generate dynamic email content or documents with variable substitution and conditional sections.
- Build static site generators or documentation tools that combine templates with data files.
- Create sandboxed template environments to safely render user-supplied or third-party templates.
- Generate code or configuration files programmatically using template inheritance and macros.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
Jinja2 is a production-stable, permissively licensed templating engine with no known vulnerabilities, minimal dependencies, and low install friction. It is the de facto standard for Python web templating and is appropriate for any project needing template rendering—from small scripts to large web applications. The 527-day gap since the last release reflects maturity rather than abandonment; the repository remains active and the package is well-maintained.
Install
jinja2 on PyPI
Before you install
Low install friction with a single pure-Python dependency (MarkupSafe). The package is in Production/Stable status and receives regular maintenance, though the last release was 527 days ago, indicating a mature project with infrequent updates rather than active development.
Requires Python 3.7 or later.
License in practice
Jinja2 is licensed under a permissive BSD license, which allows commercial and private use with minimal restrictions—suitable for most projects without legal concerns.
Quickstart
pip install jinja2
from jinja2 import Template
template = Template('Hello {{ name }}!')
result = template.render(name='World')
print(result) # Output: Hello World!Verify before relying
- Performance characteristics compared to other templating engines in production scenarios.
- Practical limits on template complexity or data size for the JIT compilation and caching system.
Package facts
| License | permissive license permissive |
| Python support | Supports the current Python release >=3.7 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 1 packageMarkupSafe |
| Maintenance | Aging 527 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 718,583,427 / month, #42 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableEnvironment :: Web EnvironmentIntended Audience :: DevelopersLicense :: OSI Approved :: BSD LicenseOperating System :: OS IndependentProgramming Language :: PythonTopic :: Internet :: WWW/HTTP :: Dynamic ContentTopic :: Text Processing :: Markup :: HTMLTyping :: Typed |
Evidence: jinja2-3.1.6-py3-none-any.whl
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See also aiohttp-jinja2 · django-jinja · jinja_partials · jinja2-simple-tags · Tempita · vsdx · ruamel.yaml.jinja2 · jinja-cli · jinjasql2