6.0.0
-----

Backwards Incompatible Changes
==============================

Python 3.4 dropped
^^^^^^^^^^^^^^^^^^

Python 3.4 is EOL since 2019-03-16 and no longer supported. We will not be creating
binaries, testing, or retaining compatibility with this version. The final version of
Pillow for Python 3.4 is 5.4.1.

Removed deprecated PIL.OleFileIO
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

PIL.OleFileIO was removed as a vendored file and in Pillow 4.0.0 (2017-01) in favour of
the upstream olefile Python package, and replaced with an ``ImportError``. The
deprecated file has now been removed from Pillow. If needed, install from PyPI (eg.
``pip install olefile``).

Removed deprecated ImageOps functions
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Several undocumented functions in ``ImageOps`` were deprecated in Pillow 4.3.0 (2017-10)
and have now been removed: ``gaussian_blur``, ``gblur``, ``unsharp_mask``, ``usm`` and
``box_blur``. Use the equivalent operations in ``ImageFilter`` instead.

Removed deprecated VERSION
^^^^^^^^^^^^^^^^^^^^^^^^^^

``VERSION`` (the old PIL version, always 1.1.7) has been removed. Use ``__version__``
instead.

API Changes
===========

Deprecations
^^^^^^^^^^^^

Python 2.7
~~~~~~~~~~

Python 2.7 reaches end-of-life on 2020-01-01.

Pillow 7.0.0 will be released on 2020-01-01 and will drop support for Python 2.7, making
Pillow 6.x the last series to support Python 2.

PyQt4 and PySide
~~~~~~~~~~~~~~~~

Qt 4 reached end-of-life on 2015-12-19. Its Python bindings are also EOL: PyQt4 since
2018-08-31 and PySide since 2015-10-14.

Support for PyQt4 and PySide has been deprecated from ``ImageQt`` and will be removed in
a future version. Please upgrade to PyQt5 or PySide2.

PIL.*ImagePlugin.__version__ attributes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

These version constants have been deprecated and will be removed in a future
version.

* ``BmpImagePlugin.__version__``
* ``CurImagePlugin.__version__``
* ``DcxImagePlugin.__version__``
* ``EpsImagePlugin.__version__``
* ``FliImagePlugin.__version__``
* ``FpxImagePlugin.__version__``
* ``GdImageFile.__version__``
* ``GifImagePlugin.__version__``
* ``IcoImagePlugin.__version__``
* ``ImImagePlugin.__version__``
* ``ImtImagePlugin.__version__``
* ``IptcImagePlugin.__version__``
* ``Jpeg2KImagePlugin.__version__``
* ``JpegImagePlugin.__version__``
* ``McIdasImagePlugin.__version__``
* ``MicImagePlugin.__version__``
* ``MpegImagePlugin.__version__``
* ``MpoImagePlugin.__version__``
* ``MspImagePlugin.__version__``
* ``PalmImagePlugin.__version__``
* ``PcdImagePlugin.__version__``
* ``PcxImagePlugin.__version__``
* ``PdfImagePlugin.__version__``
* ``PixarImagePlugin.__version__``
* ``PngImagePlugin.__version__``
* ``PpmImagePlugin.__version__``
* ``PsdImagePlugin.__version__``
* ``SgiImagePlugin.__version__``
* ``SunImagePlugin.__version__``
* ``TgaImagePlugin.__version__``
* ``TiffImagePlugin.__version__``
* ``WmfImagePlugin.__version__``
* ``XbmImagePlugin.__version__``
* ``XpmImagePlugin.__version__``
* ``XVThumbImagePlugin.__version__``

Use ``PIL.__version__`` instead.

API Additions
=============

DIB File Format
^^^^^^^^^^^^^^^

Pillow now supports reading and writing the DIB "Device Independent Bitmap" file format.

Image.quantize
^^^^^^^^^^^^^^

The `dither` option is now a customisable parameter (was previously hardcoded to `1`). This parameter takes the same values used in `Image.convert`

PNG EXIF Data
^^^^^^^^^^^^^

EXIF data can now be read from and saved to PNG images. However, unlike other image
formats, EXIF data is not guaranteed to have been read until
:py:meth:`~PIL.Image.Image.load` has been called.

Other Changes
=============

Reading new DDS image format
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Pillow can now read uncompressed RGB data from DDS images.