There is a bug reported for Pillow , which indicates that libjpeg and zlib are now as of Pillow 3.0.0.
The for Pillow on Linux give advice of how to install these packages. Note that not all of the following packages may be missing on your machine (comments suggest that only libjpeg8-dev is actually missing).
pip / PyPi (Pillow>3.4.2)
The of Pillow are available on PyPi as — the new standard packaging mechanism for Python. These prebuilt packages include all neccessary binary dependencies to allow Pillow to run and should be used if you want to install Pillow using PyPi
To use wheels, you need to have a version of pip>=1.4. If you are using an earlier version (pip --version) upgrade pip using the following:
pip install --upgrade pip
Once pip is upgraded, pip install will use platform-specific wheel files by default if they are available. Use the following command to upgrade Pillow to the latest version available on PyPi:
pip install --upgrade pillow
Mac OS X (via Homebrew)
On Mac OS X with this can be fixed using:
brew install libjpeg zlib
You may also need to force-link zlib using the following:
brew link zlib --force
Thanks to Panos Angelopoulous and nelsonvarela in the comments.
Update 5th July 2016: In current versions of Homebrew the above may no longer work, as there is no longer a formula for zlib available in the main repository (Homebrew will prompt you to install lzlib which is a different library and will not solve this problem).
There is a formula available in the dupes repository. You can either tap this repository, and install as normal:
brew tap homebrew/dupes
brew install zlib
Or you can install zlib via xcode instead, as follows:
xcode-select --install
Thanks to benjaminz in the comments and Kal's answer below
After these are installed the pip installation of Pillow should work normally.