pyguetzli

PyGuetzli

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PyGuetzli is a Python binding for Google’s Guetzli <https://github.com/google/guetzli>__ library.

Description of Guetzli from official’s repo:

Guetzli is a JPEG encoder that aims for excellent compression density at high visual quality. Guetzli-generated images are typically 20-30% smaller than images of equivalent quality generated by libjpeg. Guetzli generates only sequential (nonprogressive) JPEGs due to faster decompression speeds they offer.

Documentation

• Installation <https://wanadev.github.io/pyguetzli/install.html>_
• Guetzli Python Module <https://wanadev.github.io/pyguetzli/guetzli.html>_
• Using with PIL / Pillow images <https://wanadev.github.io/pyguetzli/pil_image.html>_
• Contributing / Reporting a bug <https://wanadev.github.io/pyguetzli/contributing.html>_

More topics at https://wanadev.github.io/pyguetzli/

Usage Example

.. code-block:: python

import pyguetzli

input_jpeg = open("./test/image.jpg", "rb").read() optimized_jpeg = pyguetzli.process_jpeg_bytes(input_jpeg)

output = open("./optimized.jpg", "wb") output.write(optimized_jpeg)

Changelog

• [NEXT] (changes on master but not released yet):

  • Nothing yet ;)

• v1.0.15:

  • Added Python 3.12 support (@flozz)
  • Removed Python 3.7 support (@flozz)

• v1.0.14:

  • Guetzli: Apply a better patch to fix the crash caused by a bad access to a vector revealed when compiled with "-D_GLIBCXX_ASSERTIONS" (David Odin)

• v1.0.13:

  • Added Python 3.11 support

• v1.0.12:

  • Guetzli: Fixed a crash caused by a bad access to a vector revealed when compiled with "-D_GLIBCXX_ASSERTIONS" (David Odin)

• v1.0.11:

  • arm64 and universal2 wheels for macOS
  • x86 and x68_64 wheels for musl-based Linux distro (Alpine,...)
  • win32 wheels for Windows (x86_64 were already available)

• v1.0.10: Python 3.10 support and wheels

• v1.0.9: Provides prebuilt wheel packages

• v1.0.8: Updates Guetzli and python dependencies

• v1.0.7: Fixes unicode issue when installing pyguetzli (#4)

• v1.0.6: Fixes a typo in compilator options on unix

• v1.0.5: Adds optimization flags when compiling Guetzli

• v1.0.4: MS Windows support

• v1.0.3: Updates Guetzli library

• v1.0.2: PIL Images: fixes crash with non RGB/RGBA images (grayscale, indexed,…)

• v1.0.1: Adds --std=c++11 flag when building Guetzli

• v1.0.0:

  • New and simpler API
  • Built-in function to deal with PIL / Pillow Images
  • Documentation (Sphinx)
  • Guetzli update

• v0.9.0: Initial release

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