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Python Imaging Library (Fork)

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While looking through the SSE version of @homm's benchmarking of the new stretch implementation, I ran across an Intel paper on speeding up imaging operations. In addition to vectorization, they...

Enhancement
Do Not Merge
Needs Rebase

### What did you do? Let's play around with image dithering, starting with this nice, low-res picture of Theresa May: ![image](https://user-images.githubusercontent.com/1790368/141884427-86324c2e-d257-40b7-8da7-4c912a4cf63e.png) According to the [docs](https://pillow.readthedocs.io/en/stable/reference/Image.html#PIL.Image.Image.convert) calling `convert` in "P" mode...

Are there any plans to add read support for the PDF format?

Enhancement
Conversion

When using context manager, Image does not close file pointer, as expected. It checks `getattr(self, "_exclusive_fp", False)` and closes the file pointer only if it's True. ```python with open("file.png", "rb")...

File Closing

What is the current best practices for building and testing Pillow on Windows? - What compiler works with the precompiled official python releases? - What versions of the dependencies --...

Question
Documentation
Sticky
Build
Windows
NumPy
BMP

With the news that travis has been acquired, I've seen a bunch of discussion about CI platforms, leading to some questions: * Is the current CI system covering what we...

Release
Infrastructure
Testing
Platform

Kind of a feature request, kind of a question - I actually already have a functional JPEG-LS plugin created using [CharLS](https://github.com/team-charls/charls) and ctypes - I was wondering if this is...

Enhancement
JPEG

### What did you do? I tried to create a text using the font "ParryHotter" (using the code below) ### What did you expect to happen? I expected to see...

Bug
Fonts
Platform

### What did you do? Converted MCIDAS .ara-file to PDF ### What did you expect to happen? A PDF would be created with content similar to the source ### What...

Bug
Conversion

### What did you do? ```python from io import BytesIO from PIL import Image image = Image.open(fp) buf = BytesIO() image.save(buf, format='JPEG', quality='keep', optimize=True) ``` ### What did you expect...

JPEG