I have no raster layers in my map document and no transparencies. Yet the map is rasterized when exported to AI. (Map frame and coordinate grid are vector graphics but everything in the map itself is a single raster image) I’ve exported maps to AI before and I did not have this problem. This time the map is quite large (ANSI E @ 34’x44′) Perhaps that is the problem? I know that all layers below a raster layer get rasterized in the output, any transparent layers and layers below a transparent layers. What are the other factors that will cause the AI exported to rasterize all the layers? Jakup: Here’s a link to an ESRI page that has links to both the 9x sample and the 10x code: http://support.esri.com/en/knowledgebase/techarticles/detail/29935 9x had a Detect Complex Output sample that could alert one to the presence of a symbol, setting, etc. that was causing rasterization. I can’t find a similar sample made for 10x and haven’t tried installing it anyway to see if it would work. ESRI offers an arcpy script to do the same supposedly. The script looks odd here so here’s the link: http://resources.arcgis.com/en/help/main/10.1/index.html#//00sm00000003000000 Raster images will also happen in AI if the layers you export are not shapefiles. For instance if you created a layer from selected features and then tried to export this to AI, it would open in AI as a raster image. I have sometimes had this problem when exporting from ArcGIS to Ai – it is normally because I forget to set the export tab to vectorize all the layers rather than rasterise. On the export window that appears go to the bottom of the window and look for the tabs – one of these has the option to set the output to vectorize layers rather than rasterise. Hope this helps anyone with similar problems. Try exporting individual layers to ai (or group of layers). This way you can detect which layer is causing the whole map not to be exported as a vector. In doing so, I found out 3D character marker symbols was causing the problem. I had a similar problem (ArcGIS 10), and couldn’t undesrand why. Untill I discovered the following bug: If a group layer has a sublayer that will be rasterized, it will rasterize the whole group, and all groups below it. Even (the bug) if the group layer is not shown at the current scale (scale dependent visibility). Some of the information contained in this post requires additional references. Please edit to add citations to reliable sources that support the assertions made here. Unsourced material may be disputed or deleted. Source.