Hi! Here’s an article about fixing ui images and those weird black outlines!
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Didn’t know that last part about 1:2 UDim pixels 
That explains why complex images can look pixelated when at their original size
Nice tutorial
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Wonderful article my dude! 
The last part is what I didn’t actually know about which is pretty interesting to acknowledge, so thank you for that!
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Just figured this out and it works like a charm! Thank you
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For those that are able to compile this, here’s a command-line tool I found that automates this process:
EDIT: I ported the algorithm to Javascript! It should be runnable in your browser. Read this post: Fixing images in Roblox ui (black outlines)
Before:
After:
(The transparency of both images were removed so that you can see how it affects the colors.)
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I seem to be getting this error when I click ok.
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I restarted gimp and it didn’t give any error but the transparent parts are still black for me.
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Huh. I didn’t have this issue. You may have mixed versions of gimp installed, may want to uninstall and reinstall.
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This has saved me
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I wrote a javascript app that automates this process. It uses the same algorithm as the alpha-bleeding program I posted a while back, but is more accessible since you don’t have compile it yourself. Most importantly, you can run it entirely from your browser!
You can access it at
http://js.do/rootmars/alpha_bleed_js (right side of the page)
or
https://pastebin.com/raw/81QpWtsv (save this as an .html and run it in your web browser)
How to run:
- Open the page.
- Click choose file and select the file you want to bleed.
- An image should appear in a black box at the bottom of your page. Save this image.
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Love it. Does it just do alpha bleeding but does it also double the size of the image?
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It just bleeds. Any reason why you’d have to double the size, though?
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The second part of the tutorial is showing that if you want a 50x50 image to be clearer, you should double its size. It said something about aligning it to a grid and that you can’t just simply resize it, though, so it makes sense that your tool doesn’t have that feature.
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hmm.
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I’ve been using your article to make my UI’s look nicer, but recently I’ve encountered a problem which is if I use offset the whole time to make my images crispier then they will not scale on all devices. I assume there’s no way to make image look crisp while using scale?
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Sadly not :^(
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