Can you simply download a picture/drawing/PDF and make it to a sketch in SW without having to trace it
This kind of works, but you really have to play with it.
2018 SOLIDWORKS Help - Converting Sketch Pictures to Vector Data
There's an Add-in (Tools > Add-ins) that works with varying degrees of success, depending on the picture. I haven't used it much, but there are some pretty good youtube how-to videos about it.
don't know about SW, but if u get 3D printing software Simplify3D, there is an option of importing image *jpeg, and that software translates it to 3d map for printout.
assuming that this is what u are after:D
check this website: Selva3D - Transform images into 3D models online
I never do it that way. Most of the time, when needing accurate models based on posted drawings (like Apple's PDF files), I'll import the PDF to something like Photoshop, convert it to a high-resolution PNG file, erase the background, and then import that image--scaled properly--into SolidWorks (up to six orthographic views). This allows me to structure more complex models as I see fit for the best results in SolidWorks.
Fun fact: Did you know the rounded edges on most Apple products are not radii, but conics? Nice to have the appropriate conic features in SolidWorks to replicate the geometry properly!
What I do is I convert the JPG to a DXF. Import the DXF into Solidworks as a part and in my example, I used the sketch contours to make the part. Below is the image I used to test this out. Its been a little while, but I am fairly certain I downloaded and used this free software to convert the image to a DXF - Download Image File Converter Software Free for PC or Mac
Attached is the part.
Retrieving data ...