REVENTOR Posted December 23, 2021 Share Posted December 23, 2021 when exporting files the resulting export size is not reflecting the actual visible detail. in other words: a 2000x2000 file has roughly the same size as a 20x20 pixel jpg file. of course this is not possible. the information stored in the jpg file is so vastly less, that the filesize of the smaller export can only be a tiny fraction of the large one - but it is not! i attached the original file for testing. xmas xport as jpg.afpub Quote Link to comment Share on other sites More sharing options...
Old Bruce Posted December 23, 2021 Share Posted December 23, 2021 You will have far far smaller files as JPEG exports if you use RGB instead of CMYK. Quote Mac Pro (Late 2013) Mac OS 12.7.6 Affinity Designer 2.5.5 | Affinity Photo 2.5.5 | Affinity Publisher 2.5.5 | Beta versions as they appear. I have never mastered color management, period, so I cannot help with that. Link to comment Share on other sites More sharing options...
REVENTOR Posted December 24, 2021 Author Share Posted December 24, 2021 True! Thanks for the info! Still it's not really clear to me why RGB exports and CMYK exports behave that differently. Quote Link to comment Share on other sites More sharing options...
Old Bruce Posted December 24, 2021 Share Posted December 24, 2021 I think it is down to the compression algorithms being written for RGB and not CMYK. I don't know if this is an Affinity problem or if it is a general problem. My rule of thumb is JPEG, PNG and GIF are to be used as RGB only, no CMYK or Greyscale. If I need CMYK then it is TIFFs or an appropriate proprietary file format, in this cas Affinity Photo. Quote Mac Pro (Late 2013) Mac OS 12.7.6 Affinity Designer 2.5.5 | Affinity Photo 2.5.5 | Affinity Publisher 2.5.5 | Beta versions as they appear. I have never mastered color management, period, so I cannot help with that. Link to comment Share on other sites More sharing options...
walt.farrell Posted December 24, 2021 Share Posted December 24, 2021 9 hours ago, REVENTOR said: Still it's not really clear to me why RGB exports and CMYK exports behave that differently. It might also be partly due to the inclusion of ICC profiles, depending on the Export options you've chosen. REVENTOR 1 Quote -- Walt Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases PC: Desktop: Windows 11 Pro 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 Laptop: Windows 11 Pro 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU. Laptop 2: Windows 11 Pro 24H2, 16GB memory, Snapdragon(R) X Elite - X1E80100 - Qualcomm(R) Oryon(TM) 12 Core CPU 4.01 GHz, Qualcomm(R) Adreno(TM) X1-85 GPU iPad: iPad Pro M1, 12.9": iPadOS 18.1, Apple Pencil 2, Magic Keyboard Mac: 2023 M2 MacBook Air 15", 16GB memory, macOS Sequoia 15.0.1 Link to comment Share on other sites More sharing options...
REVENTOR Posted December 25, 2021 Author Share Posted December 25, 2021 That makes sense! Because no matter what settings you use for export, the file will keep a certain minimum file size - this indeed has to be because of the ICC profile attached to it. Thanks! Learnt something new! walt.farrell 1 Quote Link to comment Share on other sites More sharing options...
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