I use a color calibrated monitor that is 99% accurate for the sRGB color space. I have been trying to figure out why when I viewed my postings on AstroBin, the color saturation was always less than the same JPEG file viewed on PixInsight. I have always just used the Edge browser that comes with Windows. I just discovered that Edge is not color managed, while Firefox, Mozilla, and Apple Safari are. When I view my AstroBin images on Firefox, the color saturation matches that seen through PixInsight. So from now on my browser for AstroBin is Firefox.
Now I need to go back and revise a couple of postings that I tried to pump up the color saturation on the JPEG to be seen better on Edge. Those seen on Firefox are garish now.
What browser do other AstroBinners use? If most use Edge, they are missing the true colors in the images posted.
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Hi!
when it comes to accurately displaying colors on the web you have two choices:
1. Convert your image to the sRGB color profile - this will be "close enough" both on browsers that support color management and on those that don't, but it will not be 100% accurate
2. Embed a color profile: this will be accurate on browsers that are color managed, but inaccurate on those that aren't
AstroBin supports color profiles, meaning that if you attach a color profiles on your image, AstroBin keeps it also for the various sizes it generates for optimization purposes.
However, I'd be shocked if Edge really didn't support color management. What's your source on that?
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Firefox is also my browser of choice, with Brave (chrome based) in 2nd place.
As the previous commenter mentioned save the colour profile along with the image when saving images.
You can also try saving in GIF format, on platforms like Discord i use gifs as it does not allow Discord to optimise to lower resolutions or more optimised file sizes. Gifs seem to retain their true colours and full size even after going through the posting algorithms.
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I'll admit I am confused about the color management on Edge. I see some stuff on the web that says Windows 11 in general is now color managed, but the performance I actually see says otherwise. I also posted a discussion on this on Cloudy Nights ( Color Saturation of Posted Images - Experienced Deep Sky Imaging - Cloudy Nights). One response said to post as a .png. I did a test doing this and I find it no different than what I saw with JPEG.
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PNG vs JPEG would make no difference when it comes to interpretation of the colors. Both support an embedded ICC profile. PixInsight does support embedding an ICC profile, so that should be the best way to make images appear as consistent as reasonably across devices. Barring the fact, of course, that many displays will be uncalibrated anyway…
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The ICC color profile in enabled to be embedded. Unfortunately, I cannot test the behavior of the GIF format as PixInsight does not give that as an output option.
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Output the fully scaled unoptimised image from PI, then use GIMP to open it and output as Gif.
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Chrome, Firefox, Microsoft Edge (Windows 10) / Internet Explorer, and Safari (Mac), all support color management. In the world of web browsers, the sRGB color space is the standard. Chrome and Firefox are able to set sRGB as the default color space. For most Mac's the color is set in system settings not in Safari.
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Salvatore Iovene:
PNG vs JPEG would make no difference when it comes to interpretation of the colors. Both support an embedded ICC profile. PixInsight does support embedding an ICC profile, so that should be the best way to make images appear as consistent as reasonably across devices. Barring the fact, of course, that many displays will be uncalibrated anyway... This is 100% correct. I had this very same problem and I use Google Chrome. After I’m done processing my images in PI the last thing I do before I save it go to Color Management>Assign ICC Profile and run that process. Once I did that it fixed all my issues I was having in apperance differences between PI an AB’s display of my image. I always thought when I saved the image it always assigned it but even with it check marked it didn’t seem to work until I physically run that process.
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