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Tech riderRev. 30 Sept 2026

Pillow

Ch 037.2of 36 Image Converter Software
  1. 1Runs onLinux, Mac, Windows
  2. 2CostsFree plan
  3. 3Batch conversionYes
  4. 4Image resizingYes
  5. 5Color mode conversionYes
  6. 6API accessYes
6 lines stated Written from the maker's own pages: python-pillow.org
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The Pillow homepage

Overview

Pillow is ranked #3 of 36 in image converter software on Specifiction. It runs on Linux, macOS, Windows. There is a free plan.

Pillow plans and pricing

All plans
Pillow Free Open source software · optional commercial support and maintenance through Sonar Subscription python-pillow.org · 30 Sept 2026

Compared on image converter software

Free plan
Yespython-pillow.org
Batch conversion
Yespython-pillow.org
Image resizing
Yespython-pillow.org
Color mode conversion
Yespython-pillow.org
API access
Yespython-pillow.org

Facts

Purpose
Pillow adds image processing capabilities to Python for opening, editing, and saving image files.python-pillow.org · 30 Sept 2026
Image formats
The library can identify and read over 30 raster file formats, while write support is less extensive and covers most common interchange and presentation formats.pillow.readthedocs.io · 30 Sept 2026
Image operations
The handbook covers image processing, color transforms, enhancement, geometrical transforms, and image sequences.pillow.readthedocs.io · 30 Sept 2026
License
Pillow is licensed under the open source MIT-CMU License.pillow.readthedocs.io · 30 Sept 2026
Install
The project documents installation with pip using `python3 -m pip install --upgrade Pillow`.pillow.readthedocs.io · 30 Sept 2026
Supported systems
The project aims to support current versions of Linux, macOS, and Windows, and documents platform-specific build and test targets.pillow.readthedocs.io · 30 Sept 2026
Python versions
Pillow 12 supports Python 3.10 through 3.14 according to the version support table.pillow.readthedocs.io · 30 Sept 2026
Optional features
Some capabilities require external libraries; JPEG and zlib are required by default when building from source, while WebP, JPEG 2000, color management, and complex text layout use additional libraries.pillow.readthedocs.io · 30 Sept 2026
Security guidance
The security documentation identifies parsing untrusted image data as Pillow’s primary attack surface and recommends mitigations such as format allowlists, input limits, and sandboxing.pillow.readthedocs.io · 30 Sept 2026
Vulnerability reporting
The project directs users to report sensitive vulnerability information privately on GitHub, with a Tidelift contact as an alternative.github.com · 30 Sept 2026
Support
Development and technical discussions are directed to GitHub, Stack Overflow, and Gitter, and the core maintainers are volunteers.python-pillow.org · 30 Sept 2026
Commercial support
The project says commercial support and maintenance for Pillow are available as part of the Sonar Subscription.python-pillow.org · 30 Sept 2026
Ecosystem use
The project site names Django, Wagtail, Home Assistant, and Matplotlib as projects that use Pillow for image-related tasks.python-pillow.org · 30 Sept 2026

Company

Founded
2010python-pillow.org · 28 Sept 2026

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Where it ranks on Specifiction

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