If no quality was specified when saving a JPEG, Pillow internally used a value of zero to indicate that the default quality should be used. However, this removed the ability to actually save a JPEG with zero quality. This has now been resolved.
from PIL import Image
im = Image.open("hopper.jpg")
im.save("out.jpg", quality=0)
Three new channel operations have been added: :py~PIL.ImageChops.soft_light
, :py~PIL.ImageChops.hard_light
and :py~PIL.ImageChops.overlay
.
PILLOW_VERSION
has been re-added but is deprecated and will be removed in a future release. Use __version__
instead.
It was initially removed in Pillow 7.0.0, but brought back in 7.1.0 to give projects more time to upgrade.
When opening a JPEG image, the comment may now be read into :py~PIL.Image.Image.info
.
Previously PcfFontFile
output only bitmap PIL fonts with ISO 8859-1 encoding, even though the PCF format supports Unicode, making it hard to work with Pillow with bitmap fonts in languages which use different character sets.
Now it's possible to set a different charset encoding in PcfFontFile
's class constructor. By default, it generates a PIL font file with ISO 8859-1 as before. The generated PIL font file still contains up to 256 characters, but the character set is different depending on the selected encoding.
To use such a font with ImageDraw.text
, called it with a bytes object with the same encoding as the font file.
Support has been added for ImageGrab.grab()
on Linux using the X server with the XCB library.
An optional xdisplay
parameter has been added to select the X server, with the default value of None
using the default X server.
Passing a different value on Windows or macOS will force taking a snapshot using the selected X server; pass an empty string to use the default X server. XCB support is not included in pre-compiled wheels for Windows and macOS.
When the :py~PIL.Image.Image.getbbox
method calculates the bounding box, for an RGB image it trims black pixels. Similarly, for an RGBA image it would trim black transparent pixels. This is now changed so that if an image has an alpha channel (RGBA, RGBa, PA, LA, La), any transparent pixels are trimmed.
Added support for reading and writing Animated Portable Network Graphics (APNG) images. The PNG plugin now supports using the :py~PIL.Image.Image.seek
method and the :py~PIL.ImageSequence.Iterator
class to read APNG frame sequences. The PNG plugin also now supports using the append_images
argument to write APNG frame sequences. See apng-sequences
for further details.