# Jinja

> Web template engine for Python

**Wikidata**: [Q4041851](https://www.wikidata.org/wiki/Q4041851)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Jinja_(template_engine))  
**Source**: https://4ort.xyz/entity/jinja

## Summary  
Jinja is a free, open‑source web template engine written in Python. Developed by Armin Ronacher and released under a 3‑clause BSD license, it enables developers to generate dynamic HTML (or other text) by combining static templates with Python data.

## Key Facts  
- **Creator:** Armin Ronacher (software developer, born 10 May 1989, Austrian citizenship).  
- **Initial Release:** Early versions date back to before 2016; the project is maintained by the Pallets team.  
- **License:** 3‑clause BSD License (as of the 2.10.x releases).  
- **Latest Stable Version (as of 2022):** 3.1.1, released 25 Mar 2022.  
- **Programming Language:** Python (the engine itself is a Python package).  
- **Package Names:** `Jinja2` on PyPI; `python-jinja` on Arch Linux, `py-jinja2` on macOS/macports, `devel/py-Jinja2` on FreeBSD, etc.  
- **Dependencies:** Requires the `MarkupSafe` library for safe string handling.  
- **Typical Uses:** Integrated with static site generators (MkDocs, Lektor), web‑app frameworks (e.g., Flask), and tools like Gradio.  
- **Official Website:** https://palletsprojects.com/p/jinja/  

## FAQs  
### Q: What is Jinja used for?  
A: Jinja is used to render text files—most commonly HTML—by merging template files with Python data structures, allowing separation of presentation and logic in web applications and static site generators.  

### Q: How do I install Jinja?  
A: Install the package from PyPI with `pip install Jinja2`, which provides the `jinja2` module for import in Python code.  

### Q: Under what license is Jinja distributed?  
A: Jinja is distributed under the 3‑clause BSD License, a permissive open‑source license that allows commercial and non‑commercial use.  

### Q: What is the current stable version of Jinja?  
A: The most recent stable release listed is **3.1.1**, published on 25 March 2022.  

### Q: Which programming language does Jinja run on?  
A: Jinja is a Python library and runs on any platform that supports Python.  

## Why It Matters  
Jinja provides a powerful, expressive, and secure way to generate dynamic content in Python applications. By separating markup from code, it promotes cleaner architecture and easier maintenance, especially in web development where HTML must be produced programmatically. Its permissive BSD license encourages wide adoption, and its integration with popular tools such as MkDocs, Lektor, and Flask has made it a de‑facto standard for Python templating. The engine’s reliance on the `MarkupSafe` library ensures that generated output is safe from injection attacks, a critical feature for web security. Over the years, Jinja’s steady release cadence—evident in its detailed version history—demonstrates active maintenance, keeping it compatible with modern Python releases and evolving web standards. Consequently, developers across the Python ecosystem rely on Jinja for everything from simple static sites to complex, data‑driven web applications.  

## Notable For  
- **Pallets Project Origin:** Part of the Pallets suite of libraries (including Flask), emphasizing modular, reusable Python components.  
- **Broad Ecosystem Integration:** Used by static site generators (MkDocs, Lektor) and web‑app frameworks, highlighting its versatility.  
- **Long‑Term Maintenance:** Continuous releases from 2.10.x (2019) through 3.1.1 (2022) show active development.  
- **Permissive BSD Licensing:** Allows unrestricted commercial use, contributing to its widespread adoption.  
- **Dependency on MarkupSafe:** Guarantees safe handling of HTML escaping, a key security feature.  

## Body  

### Overview  
Jinja is a template processor that interprets files written in its own **template language**. Templates combine static text with placeholders and control structures (loops, conditionals) that are filled in at runtime using Python objects.

### History & Development  
- **Creator:** Armin Ronacher, an Austrian programmer and computer scientist, initiated the project as part of the Pallets organization.  
- **Early Versions:** The engine existed before 2016 (the earliest cited reference).  
- **Naming:** Often referred to as **Jinja2**, reflecting its second major iteration.  

### Licensing  
- Distributed under the **3‑clause BSD License** (source: GitHub LICENSE file, 2017‑12‑05).  
- The license permits modification, redistribution, and commercial use with minimal restrictions.  

### Version History (selected releases)  
| Version | Release Date | Reference |
|---------|--------------|-----------|
| 2.10.1 | 6 Apr 2019 | GitHub release tag |
| 2.10.2 | 4 Oct 2019 | GitHub release tag |
| 2.11.0 | 29 Jan 2020 | GitHub release tag |
| 2.11.3 | 31 Jan 2021 | GitHub release tag |
| 3.0.0 | 12 May 2021 | GitHub release tag |
| 3.0.1 | 18 May 2021 | GitHub release tag |
| 3.1.1 | 25 Mar 2022 | GitHub release tag |

### Technical Architecture  
- **Core Language:** Python; the package is installable via PyPI (`Jinja2`).  
- **Dependency:** `MarkupSafe` for automatic HTML escaping.  
- **Template Syntax:** Supports expressions, filters, macros, inheritance, and includes.  

### Ecosystem Integration  
- **Static Site Generators:** MkDocs and Lektor embed Jinja for theme rendering.  
- **Web‑App Frameworks:** Frequently paired with Flask (also a Pallets project).  
- **Other Tools:** Gradio uses Jinja for UI templating.  

### Distribution & Packaging  
- Available across major Linux distributions (Arch Linux `python-jinja`, Debian/Ubuntu `python3-jinja2`, etc.).  
- Ports exist for BSD families (`devel/py-Jinja2` on FreeBSD, `www/py-jinja2` on OpenBSD).  

### Community & Resources  
- **Official Site:** https://palletsprojects.com/p/jinja/  
- **Source Code:** https://github.com/pallets/jinja (GitHub repository).  
- **Documentation & Support:** Stack Overflow tag `jinja2`, various language‑specific tutorials.  

## Schema Markup  
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  "@type": "Thing",
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  "url": "https://palletsprojects.com/p/jinja/",
  "sameAs": [
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  "additionalType": "SoftwareApplication"
}

## References

1. [Source](https://github.com/pallets/jinja/blob/2.10/LICENSE)
2. [The jinja Open Source Project on Open Hub: Licenses Page. Open Hub](https://www.openhub.net/p/jinja/licenses)
3. [The jinja Open Source Project on Open Hub: Languages Page. Open Hub](https://www.openhub.net/p/jinja/analyses/latest/languages_summary)
4. [Release 2.10.1. 2019](https://github.com/pallets/jinja/releases/tag/2.10.1)
5. [Release 2.10.2. 2019](https://github.com/pallets/jinja/releases/tag/2.10.2)
6. [Release 2.10.3. 2019](https://github.com/pallets/jinja/releases/tag/2.10.3)
7. [Release 2.11.0. 2020](https://github.com/pallets/jinja/releases/tag/2.11.0)
8. [Release 2.11.1. 2020](https://github.com/pallets/jinja/releases/tag/2.11.1)
9. [Release 2.11.2. 2020](https://github.com/pallets/jinja/releases/tag/2.11.2)
10. [Release 2.11.3. 2021](https://github.com/pallets/jinja/releases/tag/2.11.3)
11. [Release 3.0.0. 2021](https://github.com/pallets/jinja/releases/tag/3.0.0)
12. [Release 3.0.1. 2021](https://github.com/pallets/jinja/releases/tag/3.0.1)
13. [Release 3.1.1](https://github.com/pallets/jinja/releases/tag/3.1.1)
14. [Release 3.1.2](https://github.com/pallets/jinja/releases/tag/3.1.2)
15. [Release 2.10. 2017](https://github.com/pallets/jinja/releases/tag/2.10)
16. [Release 3.0.2. 2021](https://github.com/pallets/jinja/releases/tag/3.0.2)
17. [Release 3.0.3. 2021](https://github.com/pallets/jinja/releases/tag/3.0.3)
18. [Release 3.1.0. 2022](https://github.com/pallets/jinja/releases/tag/3.1.0)
19. [Release 3.1.3. 2024](https://github.com/pallets/jinja/releases/tag/3.1.3)
20. [Release 3.1.4. 2024](https://github.com/pallets/jinja/releases/tag/3.1.4)
21. [Release 3.1.5. 2024](https://github.com/pallets/jinja/releases/tag/3.1.5)
22. [Release 3.1.6. 2025](https://github.com/pallets/jinja/releases/tag/3.1.6)
23. [Source](https://api.github.com/repos/pallets/jinja)