Jinja by pallets
A very fast and expressive template engine.
About Jinja
From the project's README at github.com/pallets/jinja. Lightly cleaned for readability; for the full source see the upstream repo.
Jinja is a fast, expressive, extensible templating engine. Special placeholders in the template allow writing code similar to Python syntax. Then the template is passed data to render the final document.
It includes: Template inheritance and inclusion. Define and import macros within templates. HTML templates can use autoescaping to prevent XSS from untrusted user input. A sandboxed environment can safely render untrusted templates. AsyncIO support for generating templates and calling async functions. I18N support with Babel. Templates are compiled to optimized Python code just-in-time and cached, or can be compiled ahead-of-time. Exceptions point to the correct line in templates to make debugging easier. Extensible filters, tests, functions, and even syntax.
Jinja's philosophy is that while application logic belongs in Python if possible, it shouldn't make the template designer's job difficult by restricting functionality too much. In A Nutshell Donate
The Pallets organization develops and supports Jinja and other popular pa
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 12k | github.com/pallets/jinja |
| GitHub forks | 1.7k | github.com/pallets/jinja |
| PYPI downloads (last month) | 3.7k | jinja |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 15.6 years | since Oct 2010 |
| Last commit | 11 months ago | Jun 14, 2025 |
| Releases shipped | 21 | last: 1.2 years ago |
| Security policy | SECURITY.md | declared by maintainers |
| Funding links | 4 | declared by maintainers |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
Security advisories
CVE-2025-27516. What people say on Hacker News
Ready to self-host Jinja?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed May 7, 2026.
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