P: PDF import show edge artifacts on tiled PDF images (bug in PDF creation)

I have more documentation about the problem -- I can replicate it in older versions.

Again, we've spent quite a bit of time figuring this out (at least from the Photoshop side).

And it is a problem with the tiled images -- they cannot be rasterized correctly except at their original resolution or higher resolution (and even then some rasterizers might show artifacts).

@Chris I'm unable to replicate this behaviour in older versions.

The artifacts also appear at every resolution, below, equal or above the original resolution. The resolution doesnt matter, the artifact is always 1 Pixel around the borders, see attached screenshot:

This is the same file as above, only color fill as layer style applied to its easier to see, what I noticed when I did this is that its not a white line - its transparent!

We have recognized the problem, and spent considerable time working on it.
And it has everything to do with the tiling of images in the PDF.

Older versions of Photoshop rasterized PDFs differently, which would hide the artifacts at some resolutions, but still show them at other resolutions. It just wasn't as common to see the artifacts because the older rasterization code did not have as high a quality as the rasterization in CS6.

Disabling anti-aliasing may hide the artifacts at some resolutions, but not others.

Short version: tiled images in PDFs can only be rasterized correctly at their original resolution, or higher resolutions. If you try to rasterize them at lower resolutions, you will get artifacts on the tile boundaries.

@1907153 This has been noticed before, but this is only a incomplete workaround because if there are vectors in the document they will have very jagged edges. The only workaround is currently using an older Photoshop-Version, because it has nothing to do with Indesign, its just the Import Dialog in Photoshop thats bugged.

Another option is to save the PDF as JPG from within Adobe Reader, this is yet the best workaround because it will get rid of the lines and smooth the edges.

If you need more control upon import you can open it in illustrator and save it as an eps, then import it to photoshop - the white lines will be gone.

Please Adobe recognize this error and fix it! Its just a bug in the PDF-Import Dialog, it has NOTHING to do with the PDF File your trying to import.

Chris, it's not just PDFs from Indesign, it's those from Illustrator as well - the one I sent before was from Illustrator, via Acrobat Distiller (ie. print to PDF). Not sure if that's any help.

After a lot of searches, I've found the answer. It's working for my pdf files.
You need to uncheck the square "smooth" (I don't know if in english its is this word, but just under the name of the pdf) in the dialog box.

No, changes -- InDesign won't tell us why they export the tiled files, but we've determined that it is not directly a problem with Photoshop itself (or the PDF rasterizer) but a problem with how the images were written.

Are there any changes or fixes yet?
We already downgraded our Photoshop because we need that import on a daily base ... 😞

Hi, i get an "error" when opening a PDF (from Indesign) in Photoshop CS6 which does not appear when opening the very same file in Photoshop CS5 on the same machine. In CS6 there is a very thin white line around some objects (at the invisilble edge of the shadow maybe?). When i open the same file in CS5 this does not appear! The opening dialogue was filled in exactly the same in CS5 and CS6.

See the "error" here: http://data.360pixel.de/PSCS6/PSCS5-v...

How can we avoid this error or is it a bug in CS6?

Thank you!

Not "tilted" but "tiled" - it has to do with how the PDF was written.