Anarion Posted August 31, 2013 Share Posted August 31, 2013 (edited) I've been using Paint.net for ages and it is a wonderful tool for simple and quick image editing. However, there's this one thing that bugs me: no way to disable chroma subsampling. Sometimes it's okay to use chroma subsampling to save space but sometimes the results are horrible, this is one example that shows the issue:Size before uploading: 1,41 KB, png (lossless RGB)Size before uploading: 61,0 KB - progressive jpg, 100% quality, no chroma subsampling, XnViewSize before uploading: 42,9 KB - 100% quality, 4:2:0 chroma subsampling, Paint.NETWhat happens in noisy image:Png. Jpg.Quite horrible. Sure, in this case PNG is superior format in every possible way but imagine if that was part of a larger image. It would still look like that even though the rest would look okay (although I never use jpg chroma subsampling myself - it just hurts the colours and image quality too much).I'd really appreciate option to switch between most common subsampling modes like in PSP for example:Though three most common modes would be just fine i.e. 4:4:4 (no subsampling), 4:2:2 and 4:2:0. Also progressive jpg support would be nice too since it's usually smaller.That's something I'd really like to see in the future version - also I'm really looking forward to 4.0! Edited August 31, 2013 by Anarion Quote Link to comment Share on other sites More sharing options...
pdnnoob Posted September 1, 2013 Share Posted September 1, 2013 Would optimized .png images help in your situation, or are you required to use .jpg? Quote No, Paint.NET is not spyware...but, installing it is an IQ test. ~BoltBait Blend modes are like the filling in your sandwich. It's the filling that can change your experience of the sandwich. ~Ego Eram Reputo Link to comment Share on other sites More sharing options...
Anarion Posted September 1, 2013 Author Share Posted September 1, 2013 Would optimized .png images help in your situation, or are you required to use .jpg? I didn't know there was optipng plugin available, that's handy (I use command line version for batch converting my game screenshots for example). But sadly it doesn't solve the issue. Above examples just highlighted the issue. Sometimes jpg is better option especial when posting normal images or game screenshots (though in later case png can be good option too, depends about the image). Assuming I'd had some image that doesn't compress well as png (i.e. "noisy" image, lots of detail) but then I'd have small red text on blueish background it would look quite bad when using the built in jpg encoder in paint.net. Of course I can use another tool to do it but it kinda beats the purpose of the built in jpg save option because the quality is what it is. It would save time if one could save directly to jpg without chroma subsampling, now I have to use another app for that. There are some special cases where I'd really need that option to get the best image quality/size trade off when posting lossless images wouldn't be practical (or if the file size is issue). Quote Link to comment Share on other sites More sharing options...
Rick Brewster Posted September 1, 2013 Share Posted September 1, 2013 I've actually laid the groundwork for this in 4.0 by implementing a WIC wrapper (GDI+ doesn't let you configure this). It'll have to wait for a post-4.0 release, however. I do have a bug filed for this functionality. Quote The Paint.NET Blog: https://blog.getpaint.net/ Donations are always appreciated! https://www.getpaint.net/donate.html Link to comment Share on other sites More sharing options...
david.atwell Posted September 3, 2013 Share Posted September 3, 2013 The OptiPNG plugin usually outputs a smaller file than a JPG at the same size. Quote The Doctor: There was a goblin, or a trickster, or a warrior... A nameless, terrible thing, soaked in the blood of a billion galaxies. The most feared being in all the cosmos. And nothing could stop it, or hold it, or reason with it. One day it would just drop out of the sky and tear down your world.Amy: But how did it end up in there?The Doctor: You know fairy tales. A good wizard tricked it.River Song: I hate good wizards in fairy tales; they always turn out to be him. Link to comment Share on other sites More sharing options...
Ego Eram Reputo Posted September 3, 2013 Share Posted September 3, 2013 Another option: WebP (Wiki this). We have a plugin for the filetype: here Quote ebook: Mastering Paint.NET | resources: Plugin Index | Stereogram Tut | proud supporter of Codelab plugins: EER's Plugin Pack | Planetoid | StickMan | WhichSymbol+ | Dr Scott's Markup Renderer | CSV Filetype | dwarf horde plugins: Plugin Browser | ShapeMaker Link to comment Share on other sites More sharing options...
Heraclitus Posted March 8, 2019 Share Posted March 8, 2019 On 9/1/2013 at 11:56 AM, Rick Brewster said: I've actually laid the groundwork for this in 4.0 by implementing a WIC wrapper (GDI+ doesn't let you configure this). It'll have to wait for a post-4.0 release, however. I do have a bug filed for this functionality. Hi Rick, curious if there has been any progress made on this in the recent Paint.NET builds? I've come across a 4:4:4 image that is beautiful, when edited and "saved" by Paint.NET it drops the quality down to 4:2:0 with no option to preserve the bits. It's a crazy complex image and the downgrade is quite noticeable. I've tried the OptiPNG-file-type-plugin but found that through several trials with different settings, the quality is preserved (awesome!) but the file size is not reduced relative to a standard PNG file. Original File: 4:4:4 ~ 5mb Save as JPG (100%): 4:2:0 ~ 3.5mb Edit, Save as PNG ~ 11mb Save with OptiPNG ~ 11mb ... so, curious about the 4:4:4 option and when this might be made available? If nothing else, I'm a little concerned now in learning that Paint.NET doesn't AT LEAST preserve the original JPG settings when re-saving ... even when selecting the 100% setting in the save-as dialogue. Thoughts? Quote Link to comment Share on other sites More sharing options...
Rick Brewster Posted March 8, 2019 Share Posted March 8, 2019 No specific timeline, there hasn't been progress on this. The WIC wrapper I mentioned is incomplete, and it'll be a bunch of work to finish it, but I've been accumulating various things that will benefit from or depend on it. Maybe this year? It's in the "4.1.x" bucket right now (that is, probably before v4.2 whenever that is). 1 Quote The Paint.NET Blog: https://blog.getpaint.net/ Donations are always appreciated! https://www.getpaint.net/donate.html Link to comment Share on other sites More sharing options...
Rick Brewster Posted May 1, 2019 Share Posted May 1, 2019 4.1.7 will support choosing 4:4:4, 4:2:2, or 4:2:0 subsampling. The default will be 4:2:2. Before, 4:2:0 was always used because that's what GDI+ did without giving any options for it. Quote The Paint.NET Blog: https://blog.getpaint.net/ Donations are always appreciated! https://www.getpaint.net/donate.html Link to comment Share on other sites More sharing options...
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