Thanks. Email sent.

There are two options then:
1. You can replicate this problem with a different document, using the different art. If it makes the same result — please share.
2. You can share these sensitive files with the team directly, by sending them over to sharewithai@adobe.com — in this case share the link to this report for them to track it (http://illustrator.uservoice.com/forums/601447/suggestions/46840543)
The thing most of times the export result is worse because of a certain combination of factors. It does not always behave like this 100% of times, that’s why test files (and the settings!) are important to have and know.

I'm not sure I can post the files, as it's client work that is still in the process of going live.

But the exports from "export from screens" have very apparent pixelated edges (especially on placed images (PSDs, PNGs, etc.) within the illustrator artboards.

When exporting each file individually using "export as" or "save for web," and selecting "art optimized" the output (JPGs and PNGs) is rendered much smoother.

Export for Screens uses a different, much faster algorithm — but it has it costs. It does not mean it can’t be made better, but it has to be investigated with some data at hands. Can you please provide A) the original test file, B) the results Save for Web makes and you are happy with, C) the images Export for Screen makes?

Using Export for Screens (art optimized) does not produce a good quality result (.jpg).

Using "Export as" and/or "Save for Web" using the same parameters WILL produce a quality .jpg with proper anti-aliasing.

The problem is that we need "Export for Screens" to work properly, so we can export multiple dartboards with proper naming simultaneously.

PLEASE FIX!

THIS IS STILL AN ISSUE! lame.

Adobe, how is this still not fixed in 27.4 ??

The "art optimized" is not working for JPEG exports. PNG export works as expected. The setting for my "JPEG 100", "JPEG 80" etc has been set to "Art Optimized" but it makes no difference. The JPEG exports are no good. They come out as "Type Optimized", as if they were made in Deluxe Paint in 1990.

See attached examples.

L'exportation en format JPEG altère la photo si elle est modifiée (tournée ici) dans Illustrator. Ne se produit pas si j'exporte en PNG.

And compare the different file sizes when "exporting as" (very small) and with "Export for Screens" (a nightmare, much too large)

Hey all - this bug has been reopened as "Poor quality images from Export for Screens" (there's likely a few of them floating around) up vote them if this issue affects you.

We are trying again to get some attention to this problem as it's trivial to reproduce and affects ad developer workflows in particular.

Adobe engineers: I (and others) are willing to demonstrate this issue for you. We're open to dialogue to help get this fixed.

Changing the DPI to 96 also increases the dimensions of the exported image, which is not always desired. Dimensions of exported image should be same as 1x with better quality. save for web always creates image in exact desired size. Perhaps it behind the scenes resizes that 96 dpi image to 72 to achieve the exact dimensions as entered by user.

I thought I'd post an update as I've had the opportunity to test this on a new machine.
Unfortunately I can confirm that Export for Screens -> JPG still exports as Type Optimized (hinted) even when Art Optimized (Supersampling) is selected.

Exporting to PNG however produces the correct results.

Hi, please find the sample file attached.

To reproduce the error use the Export for Screens tool, and select JPG output (in the configuration panel ensure that the output anti-aliasing is set to Art Optimized)

The visual errors are highlighted by the arrows.

Peter, please provide the test file that results this image when exported and exact settings you use to export it.

Images from artboards containing embedded raster files output using Export for Screens are of decidedly lower quality than those output from Save for Web.

This is being reposted as it has been closed erroneously by Adobe admins.
Notes for Admins: This is not a resolution export setting problem. This is also not a rendering intent problem (i.e. changing the anti-aliasing setting does not fix the problem.)

Images from artboards containing embedded raster files output using Export for Screens are of decidedly lower quality than those output from Save for Web.

This is being reposted as it has been closed erroneously by Adobe admins.
Notes for Admins: This is not a resolution export setting problem. This is also not a rendering intent problem (i.e. changing the anti-aliasing setting does not fix the problem.)

Could not sucessfully post the ZIP here. Mailed it to that shareWithAI email address, along with my computer and illustrator version specs.

The two actual images to compare

I put together my own quick demonstration since this has been in "need more info" status for nearly two years. (Excuse the bad grammer in the quick project headline)

I will package the AI project, and screenshots of the settings I used. Just open the project, and export one image for screens and then save it again for web. You'll get two totally different resolutions, with the export for screens being kind of scrambly.

Im having issues attaching all files at once here so here is just the demo gif

Cant believe this issue still exists in 2021. Its always been a problem for me in every version of Illustrator, on multiple updates, multiple computers etc.