Hello. More 20 years programming experience.
I had done some dxf analyzer program, but desktop based, if this suits you.
If yes, then I need to take look at your dxf to set real time and price.
If not, then explain, please, what you understand under web based - you would like embed it like plugin, or add on, or some other. and for which browser. So again details for real time and price.
Regards.
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