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Not sure why this is happening, but butteraugli seems to ignore visible color differences in this case -
### Original Image
![mat-original](https://user-images.githubusercontent.com/8946207/2751…
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I am writing a tutorial on how to batch optimize images using cli with guetzli. The test image I am using for consistency compared to my other tutorials is https://www.cfa.harvard.edu/sites/www.cfa.ha…
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Add choices for JPEG optimization:
* Guetzli + MozJPEG
* Always reencode JPEGs using Guetzli and then use additional MozJPEG (lossless) optimization
* MozJPEG
* Always reencode JPEGs…
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However, while Guetzli creates smaller image file sizes, the tradeoff is that these search algorithms take significantly longer to create compressed images than currently available methods.
1、Can i…
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e.g.,
black and white jpg image, such as "cmd.exe" screenshort can't be converted using guetzli.
guetzli shows an error and exit automatically.
guetzli in.jpg out.jpg
Actual result:
Didn't cr…
ghost updated
7 years ago
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Building guetzli via `make` on Mac OS X 10.11.3 results in this error for me:
```
ld: warning: option -s is obsolete and being ignored
ld: internal error: atom not found in symbolIndex(__ZN7guetz…
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How is this possible? Can someone explain?
Attached is a PNG file size **17kb** > after guetzli **28kb** !!??
I have so many of these PNG's which always increase in size with guetzli
![discover…
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Hi, great utility. I know you haven't touched it in a couple of years but since guetzli can take in PNGs as a source, simple-guetzli will spit out the converted jpegs as .png files because it's copyin…
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Guys tryed to use guetzli with [XNview ](https://forum.xnview.com/viewtopic.php?f=60&t=46466&sid=16c9d3b291d428d93661087fd87ade29)
> It would be VERY helpful if you could provide an exe file which …
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https://github.com/google/butteraugli (it's one of the key points in guetzli, btw)
AFAIK this metric is more faithful than different variants of SSIM and PSNR, so… maybe mozjpeg could (optionally) …