plantuml
Decision gist · record as of 2026-08-14
Yes, if you need lightweight remote UML diagram generation and accept the dormant maintenance status. The low install friction and lack of Java dependency make it attractive for simple workflows. However, be aware that the package has not been actively maintained since 2019, so compatibility with modern Python versions is unverified and no active support is available. Suitable for stable, non-critical diagram tasks; risky for production systems requiring ongoing maintenance.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires network access to a PlantUML server (defaults to plantuml.com); offline use requires running your own server.
- Low install friction with a single runtime dependency (httplib2).
- Maintenance is dormant—last release was 2019-11-01 and the repository has not been updated since 2024-08-19, so expect no active support or bug fixes.
License · maintenance · safety
BSD (permissive) — BSD license is permissive; you may use, modify, and distribute this package freely with minimal restrictions.
last release 2019-11-01 (2478 days) · last repo commit 2024-08-19 · 129 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 386,212 downloads/mo, #7,052 on PyPI
Alternatives
Verify before relying
pip install plantuml
import plantuml
diagram = plantuml.PlantUML()
diagram.processes_file('diagram.puml')- Whether the package works reliably with modern Python versions (classifiers list only Python 2.6 and 2.7).
- Current state of the public PlantUML server and whether it remains stable for remote clients.
- Whether httplib2 dependency is actively maintained or has known compatibility issues with current Python.
What it is and what it does
PlantUML is a Python client that sends UML diagram definitions to a PlantUML server and retrieves rendered images. Instead of installing Java and running PlantUML locally, you write diagram markup in plain text and let a remote server handle the rendering. The package includes a command-line tool to batch-process diagram files and save output images to a directory.
The library depends on httplib2 for HTTP communication and defaults to the public plantuml.com server, though you can point it at any compatible server. It's designed for developers who want diagram-as-code workflows without the overhead of a local Java installation.
Use it for
- Generate architecture or sequence diagrams from version-controlled text files in CI/CD pipelines.
- Embed UML diagram generation in documentation build systems without requiring Java.
- Batch-convert a folder of PlantUML markup files to PNG or SVG images via command line.
- Create and update UML diagrams programmatically from Python code that models system structure.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need lightweight remote UML diagram generation and accept the dormant maintenance status.
The low install friction and lack of Java dependency make it attractive for simple workflows. However, be aware that the package has not been actively maintained since 2019, so compatibility with modern Python versions is unverified and no active support is available. Suitable for stable, non-critical diagram tasks; risky for production systems requiring ongoing maintenance.
Install
plantuml on PyPI
Before you install
Low install friction with a single runtime dependency (httplib2). Maintenance is dormant—last release was 2019-11-01 and the repository has not been updated since 2024-08-19, so expect no active support or bug fixes.
Requires network access to a PlantUML server (defaults to plantuml.com); offline use requires running your own server.
License in practice
BSD license is permissive; you may use, modify, and distribute this package freely with minimal restrictions.
Quickstart
pip install plantuml
import plantuml
diagram = plantuml.PlantUML()
diagram.processes_file('diagram.puml')Verify before relying
- Whether the package works reliably with modern Python versions (classifiers list only Python 2.6 and 2.7).
- Current state of the public PlantUML server and whether it remains stable for remote clients.
- Whether httplib2 dependency is actively maintained or has known compatibility issues with current Python.
Package facts
| License | BSD permissive |
| Python support | Not specified |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 1 packagehttplib2 |
| Maintenance | Dormant 2,478 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 386,212 / month, #7,052 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 3 - AlphaIntended Audience :: DevelopersIntended Audience :: System AdministratorsLicense :: OSI Approved :: BSD LicenseProgramming Language :: PythonProgramming Language :: Python :: 2.6Programming Language :: Python :: 2.7Topic :: Internet :: WWW/HTTPTopic :: Software Development :: Libraries :: Python ModulesTopic :: Utilities |
Evidence: plantuml-0.3.0-py3-none-any.whl
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