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Installation¶

Warnings¶

Pillow and PIL cannot co-exist in the same environment. Before installing Pillow, please uninstall PIL.

Pillow >= 1.0 no longer supports import Image . Please use from PIL import Image instead.

Pillow >= 2.1.0 no longer supports import _imaging . Please use from PIL.Image import core as _imaging instead.

Python Support¶

Pillow supports these Python versions.

Pillow 6.2.1 — 6.2.2

Basic Installation¶

The following instructions will install Pillow with support for most common image formats. See External Libraries for a full list of external libraries supported.

Install Pillow with pip:

Windows Installation¶

We provide Pillow binaries for Windows compiled for the matrix of supported Pythons in both 32 and 64-bit versions in the wheel format. These binaries include support for all optional libraries except libimagequant and libxcb. Raqm support requires FriBiDi to be installed separately:

macOS Installation¶

We provide binaries for macOS for each of the supported Python versions in the wheel format. These include support for all optional libraries except libimagequant. Raqm support requires FriBiDi to be installed separately:

Linux Installation¶

We provide binaries for Linux for each of the supported Python versions in the manylinux wheel format. These include support for all optional libraries except libimagequant. Raqm support requires FriBiDi to be installed separately:

Most major Linux distributions, including Fedora, Ubuntu and ArchLinux also include Pillow in packages that previously contained PIL e.g. python-imaging . Debian splits it into two packages, python3-pil and python3-pil.imagetk .

FreeBSD Installation¶

Pillow can be installed on FreeBSD via the official Ports or Packages systems:

Ports:

Packages:

The Pillow FreeBSD port and packages are tested by the ports team with all supported FreeBSD versions.

Building From Source¶

External Libraries¶

You do not need to install all supported external libraries to use Pillow’s basic features. Zlib and libjpeg are required by default.

There are Dockerfiles in our Docker images repo to install the dependencies for some operating systems.

Many of Pillow’s features require external libraries:

libjpeg provides JPEG functionality.

Pillow has been tested with libjpeg versions 6b, 8, 9-9d and libjpeg-turbo version 8.

Starting with Pillow 3.0.0, libjpeg is required by default, but may be disabled with the —disable-jpeg flag.

zlib provides access to compressed PNGs

Starting with Pillow 3.0.0, zlib is required by default, but may be disabled with the —disable-zlib flag.

libtiff provides compressed TIFF functionality

Pillow has been tested with libtiff versions 3.x and 4.0-4.3

libfreetype provides type related services

littlecms provides color management

Pillow version 2.2.1 and below uses liblcms1, Pillow 2.3.0 and above uses liblcms2. Tested with 1.19 and 2.7-2.12.

libwebp provides the WebP format.

Pillow has been tested with version 0.1.3, which does not read transparent WebP files. Versions 0.3.0 and above support transparency.

tcl/tk provides support for tkinter bitmap and photo images.

openjpeg provides JPEG 2000 functionality.

Pillow has been tested with openjpeg 2.0.0, 2.1.0, 2.3.1 and 2.4.0.

Pillow does not support the earlier 1.5 series which ships with Debian Jessie.

libimagequant provides improved color quantization

Pillow has been tested with libimagequant 2.6-2.15.1

Libimagequant is licensed GPLv3, which is more restrictive than the Pillow license, therefore we will not be distributing binaries with libimagequant support enabled.

libraqm provides complex text layout support.

libraqm provides bidirectional text support (using FriBiDi), shaping (using HarfBuzz), and proper script itemization. As a result, Raqm can support most writing systems covered by Unicode.

libraqm depends on the following libraries: FreeType, HarfBuzz, FriBiDi, make sure that you install them before installing libraqm if not available as package in your system.

Setting text direction or font features is not supported without libraqm.

Pillow wheels since version 8.2.0 include a modified version of libraqm that loads libfribidi at runtime if it is installed. On Windows this requires compiling FriBiDi and installing fribidi.dll into a directory listed in the Dynamic-Link Library Search Order (Microsoft Docs) ( fribidi-0.dll or libfribidi-0.dll are also detected). See Build Options to see how to build this version.

Previous versions of Pillow (5.0.0 to 8.1.2) linked libraqm dynamically at runtime.

libxcb provides X11 screengrab support.

Once you have installed the prerequisites, run:

If the prerequisites are installed in the standard library locations for your machine (e.g. /usr or /usr/local ), no additional configuration should be required. If they are installed in a non-standard location, you may need to configure setuptools to use those locations by editing setup.py or setup.cfg , or by adding environment variables on the command line:

If Pillow has been previously built without the required prerequisites, it may be necessary to manually clear the pip cache or build without cache using the —no-cache-dir option to force a build with newly installed external libraries.

Build Options¶

Environment variable: MAX_CONCURRENCY=n . Pillow can use multiprocessing to build the extension. Setting MAX_CONCURRENCY sets the number of CPUs to use, or can disable parallel building by using a setting of 1. By default, it uses 4 CPUs, or if 4 are not available, as many as are present.

Build flags: —disable-zlib , —disable-jpeg , —disable-tiff , —disable-freetype , —disable-lcms , —disable-webp , —disable-webpmux , —disable-jpeg2000 , —disable-imagequant , —disable-xcb . Disable building the corresponding feature even if the development libraries are present on the building machine.

Build flags: —enable-zlib , —enable-jpeg , —enable-tiff , —enable-freetype , —enable-lcms , —enable-webp , —enable-webpmux , —enable-jpeg2000 , —enable-imagequant , —enable-xcb . Require that the corresponding feature is built. The build will raise an exception if the libraries are not found. Webpmux (WebP metadata) relies on WebP support. Tcl and Tk also must be used together.

Build flags: —vendor-raqm —vendor-fribidi These flags are used to compile a modified version of libraqm and a shim that dynamically loads libfribidi at runtime. These are used to compile the standard Pillow wheels. Compiling libraqm requires a C99-compliant compiler.

Build flag: —disable-platform-guessing . Skips all of the platform dependent guessing of include and library directories for automated build systems that configure the proper paths in the environment variables (e.g. Buildroot).

Build flag: —debug . Adds a debugging flag to the include and library search process to dump all paths searched for and found to stdout.

Building on macOS¶

The Xcode command line tools are required to compile portions of Pillow. The tools are installed by running xcode-select —install from the command line. The command line tools are required even if you have the full Xcode package installed. It may be necessary to run sudo xcodebuild -license to accept the license prior to using the tools.

The easiest way to install external libraries is via Homebrew. After you install Homebrew, run:

To install libraqm on macOS use Homebrew to install its dependencies:

Then see depends/install_raqm_cmake.sh to install libraqm.

Now install Pillow with:

or from within the uncompressed source directory:

Building on Windows¶

We recommend you use prebuilt wheels from PyPI. If you wish to compile Pillow manually, you can use the build scripts in the winbuild directory used for CI testing and development. These scripts require Visual Studio 2017 or newer and NASM.

Building on Windows using MSYS2/MinGW¶

To build Pillow using MSYS2, make sure you run the MSYS2 MinGW 32-bit or MSYS2 MinGW 64-bit console, not MSYS2 directly.

The following instructions target the 64-bit build, for 32-bit replace all occurrences of mingw-w64-x86_64- with mingw-w64-i686- .

Make sure you have Python and GCC installed:

Prerequisites are installed on MSYS2 MinGW 64-bit with:

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Installation¶

Warnings¶

Pillow and PIL cannot co-exist in the same environment. Before installing Pillow, please uninstall PIL.

Pillow >= 1.0 no longer supports import Image . Please use from PIL import Image instead.

Pillow >= 2.1.0 no longer supports import _imaging . Please use from PIL.Image import core as _imaging instead.

Python Support¶

Pillow supports these Python versions.

Pillow 6.2.1 — 6.2.2

Pillow External Libraries for a full list of external libraries supported.

Install Pillow with pip:

Windows Installation¶

We provide Pillow binaries for Windows compiled for the matrix of supported Pythons in both 32 and 64-bit versions in the wheel format. These binaries include support for all optional libraries except libimagequant and libxcb. Raqm support requires FriBiDi to be installed separately:

macOS Installation¶

We provide binaries for macOS for each of the supported Python versions in the wheel format. These include support for all optional libraries except libimagequant. Raqm support requires FriBiDi to be installed separately:

Linux Installation¶

We provide binaries for Linux for each of the supported Python versions in the manylinux wheel format. These include support for all optional libraries except libimagequant. Raqm support requires FriBiDi to be installed separately:

Most major Linux distributions, including Fedora, Ubuntu and ArchLinux also include Pillow in packages that previously contained PIL e.g. python-imaging . Debian splits it into two packages, python3-pil and python3-pil.imagetk .

FreeBSD Installation¶

Pillow can be installed on FreeBSD via the official Ports or Packages systems:

Ports:

Packages:

The Pillow FreeBSD port and packages are tested by the ports team with all supported FreeBSD versions.

Building From Source¶

External Libraries¶

You do not need to install all supported external libraries to use Pillow’s basic features. Zlib and libjpeg are required by default.

There are Dockerfiles in our Docker images repo to install the dependencies for some operating systems.

Many of Pillow’s features require external libraries:

libjpeg provides JPEG functionality.

Pillow has been tested with libjpeg versions 6b, 8, 9-9d and libjpeg-turbo version 8.

Starting with Pillow 3.0.0, libjpeg is required by default, but may be disabled with the —disable-jpeg flag.

zlib provides access to compressed PNGs

Starting with Pillow 3.0.0, zlib is required by default, but may be disabled with the —disable-zlib flag.

libtiff provides compressed TIFF functionality

Pillow has been tested with libtiff versions 3.x and 4.0-4.3

libfreetype provides type related services

littlecms provides color management

Pillow version 2.2.1 and below uses liblcms1, Pillow 2.3.0 and above uses liblcms2. Tested with 1.19 and 2.7-2.12.

libwebp provides the WebP format.

Pillow has been tested with version 0.1.3, which does not read transparent WebP files. Versions 0.3.0 and above support transparency.

tcl/tk provides support for tkinter bitmap and photo images.

openjpeg provides JPEG 2000 functionality.

Pillow has been tested with openjpeg 2.0.0, 2.1.0, 2.3.1 and 2.4.0.

Pillow does not support the earlier 1.5 series which ships with Debian Jessie.

libimagequant provides improved color quantization

Pillow has been tested with libimagequant 2.6-2.16.0

Libimagequant is licensed GPLv3, which is more restrictive than the Pillow license, therefore we will not be distributing binaries with libimagequant support enabled.

libraqm provides complex text layout support.

libraqm provides bidirectional text support (using FriBiDi), shaping (using HarfBuzz), and proper script itemization. As a result, Raqm can support most writing systems covered by Unicode.

libraqm depends on the following libraries: FreeType, HarfBuzz, FriBiDi, make sure that you install them before installing libraqm if not available as package in your system.

Setting text direction or font features is not supported without libraqm.

Pillow wheels since version 8.2.0 include a modified version of libraqm that loads libfribidi at runtime if it is installed. On Windows this requires compiling FriBiDi and installing fribidi.dll into a directory listed in the Dynamic-Link Library Search Order (Microsoft Docs) ( fribidi-0.dll or libfribidi-0.dll are also detected). See Build Options to see how to build this version.

Previous versions of Pillow (5.0.0 to 8.1.2) linked libraqm dynamically at runtime.

libxcb provides X11 screengrab support.

Once you have installed the prerequisites, run:

If the prerequisites are installed in the standard library locations for your machine (e.g. /usr or /usr/local ), no additional configuration should be required. If they are installed in a non-standard location, you may need to configure setuptools to use those locations by editing setup.py or setup.cfg , or by adding environment variables on the command line:

If Pillow has been previously built without the required prerequisites, it may be necessary to manually clear the pip cache or build without cache using the —no-cache-dir option to force a build with newly installed external libraries.

Build Options¶

Environment variable: MAX_CONCURRENCY=n . Pillow can use multiprocessing to build the extension. Setting MAX_CONCURRENCY sets the number of CPUs to use, or can disable parallel building by using a setting of 1. By default, it uses 4 CPUs, or if 4 are not available, as many as are present.

Build flags: —disable-zlib , —disable-jpeg , —disable-tiff , —disable-freetype , —disable-lcms , —disable-webp , —disable-webpmux , —disable-jpeg2000 , —disable-imagequant , —disable-xcb . Disable building the corresponding feature even if the development libraries are present on the building machine.

Build flags: —enable-zlib , —enable-jpeg , —enable-tiff , —enable-freetype , —enable-lcms , —enable-webp , —enable-webpmux , —enable-jpeg2000 , —enable-imagequant , —enable-xcb . Require that the corresponding feature is built. The build will raise an exception if the libraries are not found. Webpmux (WebP metadata) relies on WebP support. Tcl and Tk also must be used together.

Build flags: —vendor-raqm —vendor-fribidi These flags are used to compile a modified version of libraqm and a shim that dynamically loads libfribidi at runtime. These are used to compile the standard Pillow wheels. Compiling libraqm requires a C99-compliant compiler.

Build flag: —disable-platform-guessing . Skips all of the platform dependent guessing of include and library directories for automated build systems that configure the proper paths in the environment variables (e.g. Buildroot).

Build flag: —debug . Adds a debugging flag to the include and library search process to dump all paths searched for and found to stdout.

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