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Found 3 results

  1. As a test with this program i have decided to make a small project to understand the basics of how to handle it. So far so good, until i export the final result into an 8-colour indexed PNG file to save space. The project has nothing but two colours, white and the background colour, so the remainder of the palette just exists for antialiasing, however, i am finding that on the exported image, all the solid white areas have dithering on them, the edges are correctly antialiased as expected, but the white areas have an irregular pattern on them. I have provided the project file to someone i know who runs Designer on macOS and on their end, and they seem to have ran into the same problem as i did. The project settings used are: Preset: None, Palletized: Yes, Pallette: Automatic, Colours: 8, and "Don't export layers hidden by export persona" checked. This is being done in Designer 1.8.3.641 The problem does not exist while exporting as PNG without any additional parameters. Although, SOMETIMES, setting PNG-8 as a render preset will give an image with banding, instead of dithering. Attatched is a render at the highest resolution and the project file on my PC, also the renders from my friend's Mac for comparison's sake. Windows 10 Classic Wallpaper.afdesign
  2. Hello, I'm sorely missing the feature to export palettized PNG-8 with alpha from Affinity Designer for web development. I can export PNG-24 with alpha or PNG-8 with binary (on or off) transparency, but not PNG-8 using a palette in which the colors of the palette have alpha values attached. This is a feature that's supported by both the standalone tool ImageAlpha (converts PNG-24 to PNG-8 with alpha) and by Photoshop's Export dialog that you get by right-clicking layers. I'm using PNG-8 with alpha for image size optimization, especially for spritesheets and graphics that would not quite work as SVG. At the moment my workflow is: Export PNG-24, open each PNG in ImageAlpha, manually adjust the settings there, save. I have to repeat this in parts every time I change a graphic, cancelling the benefits continuous export would provide me with. Please add this feature Cheers -- Peter ImageAlpha is using "pngquant and pngnq-s9 and alpha-channel-aware posterizer." ImageAlpha: https://pngmini.com
  3. I'm running the Affinity Photo Trial and one of the things I need to switch to Affinity is exporting reasonably large PNG-8 files. I've run into a problem where with big PNG-8s, I am seeing what looks like small bits of corruption. It's most clearly seen with white background (I looked at some of the other posts and tried setting matte to both transparent and white), but I've also had weird pixel placement in other parts of colour images. Basically if you look below the gradient you can see a pattern of tiny dots spreading their way down in angled lines across half the page. The pattern varies when I do the export. My export settings are: Lanczos 3 (seperable), RGB 8-bit, Palettised, Automatic Palette, 256 Colours I've attached the PNG as well as the source file. affinitybug.afphoto
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