deleting layer from pdf

any free or online tools to delete layers from a pdf page?(i have got a building plan in pdf ,i want to delete unwanted layers and keep wall layer for converting to dxf).thanks

Inkscape…?

thanks for the hint.i found a tut for importing layers,but din’t work for me.started tracing manually!

You can download the free fully functional trial of Photoline, and import the pdf. and remove the objects.

i tried photoline,it didn’t work for me - maybe limitation based on number of layers in pdf.

I think Acrobat pro is best for you.In Acrobat Pro, you can rename, flatten, and merge layers, change the properties of layers, and add actions to layers. You can also rearrange layers, import layers from image files and other PDFs, and lock layers to prevent them from being hidden.