topic Re: PDF underlay issues AutoCAD LT 2026 in AutoCAD for Mac Forum

PDF underlay issues AutoCAD LT 2026

saheldt — Tue, 09 Sep 2025 14:58:59 GMT

I recently upgraded to 2026 and until now I've been able to hide the pdf underlay by pressing the scroll wheel button on the mouse. It doesn't work anymore and I can't find any solution for this. It still works with a raster image.

When I have a pdf underlay on screen and highlight it, it hides the drawing even when draw order is set to back. And lastly, when the pdf underlay snap is "off" everything snaps to a corner of the pdf. Very annoying.

The only workaround I have is to convert all my pdf's to images and I don't want to have to do this.

Thanks in advance for any help!

Re: PDF underlay issues AutoCAD LT 2026

maxim_k — Tue, 09 Sep 2025 20:15:29 GMT

Hi @saheldt ,

>>>> I've been able to hide the pdf underlay by pressing the scroll wheel button on the mouse. It doesn't work anymore

Yes, this is the standard behaviour with updated graphics engine.

BTW - images are also shows during pan or zoom if they were fully visible before panning began.

>>>>>When I have a pdf underlay on screen and highlight it, it hides the drawing even when draw order is set to back.

The same thing - standard behaviour.

>>>>>when the pdf underlay snap is "off" everything snaps to a corner of the pdf

Try to set PDFFRAME system variable to 0 (zero)

Re: PDF underlay issues AutoCAD LT 2026

saheldt — Wed, 10 Sep 2025 13:38:47 GMT

Thank you for your response and the tip to set pdfframe to 0.

I do have a question about your comment about me "not" being able to hide the pdf underlay with the scroll wheel button (pan). Are you saying that it is correct that it does not work anymore? Images still do hide when I pan with the current version as well as previous versions of LT for me.

Thanks!

Re: PDF underlay issues AutoCAD LT 2026

maxim_k — Thu, 11 Sep 2025 05:13:32 GMT

Hi @saheldt ,

>>>>Are you saying that it is correct that it does not work anymore?

Yes. In 2026 version it works exactly the same as in AutoCAD for Windows for many years - PDF underlay is visible when you PAN the drawing.

Re: PDF underlay issues AutoCAD LT 2026

saheldt — Thu, 11 Sep 2025 13:32:52 GMT

Hi @maxim_k,

Thanks for the clarification. That's too bad it was a "feature" for me.

Thank you!