Post Reply 

Weird Color Mottling After Export

Jul 1, 2014, 16:51 (This post was last modified: Jul 1, 2014 16:52 by aeshapera.)
Post: #1
Weird Color Mottling After Export
Greetings! I'm a newb. I've been using GIMP for about a year. I searched the forum for solutions to my issue, but I may not know the correct terminology to search effectively - thanks in advance for patience with my newbiness. Smile

Whenever I export an image (I tend to export to either jpg or png), the resulting image always has weird mottling in the text and in any bucket-filled shapes.

Here's a png I just threw together.

https://docs.google.com/file/d/0BxNAgD_E...jVPMWt6eGs

Here's what it looks like after I upload it to FaceBook, just for the sake of example.

https://www.facebook.com/photo.php?fbid=...permPage=1

Can anyone please tell me how to create images that won't have that goofy mottling of the color in the text? I appreciate your time and consideration - truly I thank you!
Find all posts by this user
Quote this message in a reply
Jul 1, 2014, 18:59
Post: #2
RE: Weird Color Mottling After Export
you get that because Facebook compresses your image

adding noise or using a gradient can help reducing the effect

please visit Gimp-Science-Labs Blog
Visit this user's website Find all posts by this user
Quote this message in a reply
Jul 1, 2014, 19:08
Post: #3
RE: Weird Color Mottling After Export
Jpeg artifacts. The image has been compressed to death by facebook.

The example downloads to a jpg size 19,453B To get that size in Gimp the quality setting will be between 50 (21,232B) and 30 (17,821B). Open it and there is also strange color profile used.

Blame it all on Facebook

** https://www.gimp-forum.net/ now answering questions**
Find all posts by this user
Quote this message in a reply
Jul 1, 2014, 20:21
Post: #4
RE: Weird Color Mottling After Export
Thank you! Very helpful answers! I appreciate your time!
Find all posts by this user
Quote this message in a reply
Jul 2, 2014, 04:48
Post: #5
RE: Weird Color Mottling After Export
Als0, there is a feature on "the book", when your uploading your picture something like "HQ version(may be slower)" Try that, just don't go to crazy with it (one to a couple photos per session.)

The reason they compress the photos is to save their bandwidth being a free site, the only money they make to pay for server costs are through ads & games / apps, which fluctuates.

"In order to succeed, your desire for success should be greater than fear of failure." BC
[Image: 29uocaf.png]
iFS007 tut vids on YT ~ auto color B&W landscape tut
Visit this user's website Find all posts by this user
Quote this message in a reply
Post Reply 


Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  not able to draw different color rectangles manish 1 69 Nov 3, 2017 04:01
Last Post: ythgilb
  eps export files for use with SignLab7.1 doktora 1 155 Oct 14, 2017 06:16
Last Post: ythgilb
  Desaturate to color KWiK 2 151 Oct 9, 2017 22:14
Last Post: KWiK
  Removing color from multiple images Aquilo 6 3,036 Sep 28, 2017 12:56
Last Post: angel0sdh
  nothing works from the File menu, can't save, export, close, etc jperiod 1 170 Aug 3, 2017 05:19
Last Post: ythgilb

Forum Jump:


GIMP ForumPortalArchiveContactTermsRSS