Guetzli GUI

One click image converter

Simple GUI

Guetzli made easy!
One click that stands between you and your Guetzli JPEG :)
Batch convert supports multi-thread encoding.

It's open source, find it on Github.


Guetzli Converter is a simple GUI of the command line tool Guetzli developed by Google. You can find the official project on Github:

Guetzli Converter just simplify the process of creating a Guetzli encoded JPEG by providing a graphical interface.

Guetzli Converter's batch processing make it possible to run Guetzli multi-thread. Unlocking you much more performance if you have a bunch of files to convert.


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.



  • Guetzli uses a large amount of memory. You should provide 300MB of memory per 1MPix of the input image.
  • Guetzli uses a significant amount of CPU time. You should count on using about 1 minute of CPU per 1 MPix of input image.
  • Guetzli assumes that input is in sRGB profile with a gamma of 2.2. Guetzli will ignore any color-profile metadata in the image.



GuetzliConverterSetup.exe (972 kb) 
including Guetzli 1.0.1


GuetzliConverterImage.dmg (2167 kb) 
including Guetzli 1.0.1

Linux (489 kb)
including Guetzli 1.0.1

Java Runtime

JRE required to run the app

If not already installed, download it here.


Any problems ? Need help ?

Need a place to talk about this app, ask questions or get support? Feel free to do it at the polygOnetic forum.

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  • batch processing
  • multi threading

  • remember user settings
  • initial release