TheMBB99 opened a new issue #1538: Grey Bars in Image when resize_images
URL: https://github.com/apache/incubator-pagespeed-ngx/issues/1538
 
 
   Hi,
   
   the following problem:
   
   All image optimizing and converting options work flawlessly except 
"resize_images".
   The images I prepared for demonstration are a small cutout of a product 
image of one of our customers.
   They have a white plain on a transparent background and on this plain is the 
actual image (product, actor, etc.).
   
   Now when I enable resizing I get this grey bars where ever this transition 
is between transparent and white:
   
   ![psol image resize 
disabled](https://user-images.githubusercontent.com/19535981/36315443-09c89946-1338-11e8-979c-81d3963a78ee.png)
   
   ![psol image resize 
enabeld](https://user-images.githubusercontent.com/19535981/36315795-d3383b2e-1338-11e8-8f97-a0a199eb2a41.png)
   
   I really do not to touch the original files and this seems to me like an 
unwanted effect. I tried to find and edit the effecting lines of code my self 
but I just not good enough in C++ and this project.
   
   If anyone can fix this and post it and if so please write me the solution 
down - I would be very grateful.
   
   =====
   Ending of Issue description
   I hope I have described my problem understandable. I'm not very good at 
describing technical issues in English - and even not in german infact. So I'm 
very sorry for my dishonoring to the English language.

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