First YOGA Image Optimizer Version (v1.0.0) Released!

Optimizations

YOGA Image Optimizer allow you to batch convert / optimize your images. It supports most format as input, and can output optimized JPEGs, PNGs and WebPs.

JPEG

YOGA reduces the weight of the JPEGs from -9 % to -45 % (-27 % in average). The optimization is done by (re)encoding the images with Guetzli. The JPEG optimization will be improved further in future releases.

JPEG file reduction on a selection of images

PNG

YOGA reduce the weight of the PNGs up to -75 % (about -20 % in average). The PNG optimizations are done losslessly by the ZopfliPNG library.

PNG file reduction on a selection of images

WebP

YOGA also optimize WebP images but there still a lot to do on this format. There is for now no much gain using YOGA instead using directly cwebp / libwebp, but converting JPEG to WebP and PNG to lossless WebP is very effective to reduce file sizes.

JPEG vs WebP / PNG vs lossless WebP

Known Issues

• The "Stop" button only cancel future optimization but not the running ones (this is a limitation of the used Python APIs, this will be improved in the next release).
• On Windows, the close, maximize and minimize buttons are black on black in the dark version of the "Windows10" GTK theme.

Changelog

Here is the complete changelog, including the ones of the beta versions.

• v1.0.0:
  • Fix [-] button do not remove selected image
  • Update site URL
• v0.99.2 (beta):
  • Fix package data not installed while installing with pip (#3)
• v0.99.1 (beta):
  • Fix site URL in setup.py
  • Fix version number
• v0.99.0 (beta):
  • Initial release
  • Linux and Windows support
  • Optimizes PNG, JPEG and WebP image formats

Screenshot

YOGA Image Optimizer v1.0.0 main window