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Ferdinando Traversa

Affinity publisher low JPG/PNG quality

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Hi @Ferdinando Traversa,

In the PDF export screen can you please click the More Options and on the new screen set the Rasterise option to nothing and turn off the Downsample images option and Allow JPEG compression and then enable the Use document resolution option and the PDF will export with the photos the same resolution as in your document.

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What exactly is the problem, can you specify it somehow?


Affinity Store: Affinity Suite (ADe, APh, APu) 1.7.3.481.
Windows 10 Pro, Version 1909, Build 18363.476.
Dell Latitude E5570, i5-6440HQ 2.60 GHz, 8 GB, Intel HD Graphics 530, 1920 x 1080.
Dell OptiPlex 7060, i5-8500 3.00 GHz, 16 GB, Intel UHD Graphics 630, Dell P2417H 1920 x 1080.

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10 minutes ago, Ferdinando Traversa said:

You can see from files I attached: if I export to jpg or I export to png it is very very low quality jpg or png file (also compared to pdf).

They look fine to me, and (I suspect) to Pšenda. Can you explain what looks low quality to you? Are there some specific areas with problems that you could point to?


-- Walt

Windows 10 Home, version 1909 (183623.476), 16GB memory, Intel Core i7-6700K @ 4.00Gz, GeForce GTX 970
Affinity Photo 1.7.3.481 and 1.8.0.514 Beta   / Affinity Designer 1.7.3.481 and 1.8.0.514 Beta  / Affinity Publisher 1.7.3.481 and 1.8.0.518 Beta

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Looking at your attached images in Windows Photos I can see a colour change between PNG and JPG – especially noticeable in the logos (see the greens and blues in Wimimedia logo, for example).
The PDF is of a much better quality overall however so the issue is probably with your JPG/PNG export settings. (My attached screen-grabs show the difference between the PDF and PNG.)
If you can attach a screen-grab of your settings (including the “More...” dialog) it will make it easier to diagnose.

Annotation 2019-12-03 090218.png

Annotation 2019-12-03 090239.png

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In PDF, some images are embedded with huge resolution.
image.png.fe28f1c9af1b12b06fa8d7a7dcc7b114.png

So it is clear that they will render better in PDF than after their compression and degradation to 300DPI.
The fact, that a PDF file has 9MB, and an uncompressed PNG of only 1MB, is a clear proof that there is much more detailed data in the PDF.
Therefore, a significantly higher DPI must be used for adequate PNG/JPEG export quality.

Edit: Even in PDF there are some logos in a small DPI, and their quality is then poor compared to others.
image.thumb.png.62822e836949e8255eda4cda12790463.png


Affinity Store: Affinity Suite (ADe, APh, APu) 1.7.3.481.
Windows 10 Pro, Version 1909, Build 18363.476.
Dell Latitude E5570, i5-6440HQ 2.60 GHz, 8 GB, Intel HD Graphics 530, 1920 x 1080.
Dell OptiPlex 7060, i5-8500 3.00 GHz, 16 GB, Intel UHD Graphics 630, Dell P2417H 1920 x 1080.

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As I wrote above, set Document to 600 or more DPI. The files will be significantly larger, but you will also have higher quality.


Affinity Store: Affinity Suite (ADe, APh, APu) 1.7.3.481.
Windows 10 Pro, Version 1909, Build 18363.476.
Dell Latitude E5570, i5-6440HQ 2.60 GHz, 8 GB, Intel HD Graphics 530, 1920 x 1080.
Dell OptiPlex 7060, i5-8500 3.00 GHz, 16 GB, Intel UHD Graphics 630, Dell P2417H 1920 x 1080.

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