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What we want to do is protect our product from those that would convert it back to cad and change our designs. As far as I know, the only way to do this is by adding security protection within the pdf, but this can also be circumvented by some software. Thanks for the response. However, as per my previous response to another responder, we are not prepared to short change our clients with poor quality image pdfs.

Vectors are the only option with the addition of using security within the PDF's we create. You might want to first check if those drawings are the intellectual property of the client. Chances are they're only being lent to you to be worked on. Which means the client can do whatever they want with those drawings. In today's world, as Dean mentioned, there really is no way to prevent someone from "reverse-engineering" an electronic drawing that has any real quality at all, raster or vector format, other than a legally binding contract.

I have even had usable success with customer-supplied paper prints when they have no electronic drawings available for use as backgrounds for my drawings. I have scanned good, clean prints at a high dpi setting, then used software to vectorize the resulting raster pdf into dxf format, then dropping into my AutoCAD file.

If someone wants to steal your drawings they will To prevent changes to the PDF, you can always select what other people can do with the file and password protect those options. I know Bluebeam has this feature and I suspect Adobe non-reader version has this feature as well.

Removing the password PDF is very easy. This is not a protection. You need to use a special program - only a trustee will view the PDF file.

Without the ability to insert into AutoCAD or another file change. And then without a special program and access code, no one can watch your PDF.

Use it StarForce. Agreed, you need a special program to access the PDF file as an additional security measure, but the initial question was how to prevent altering the actual PDF document itself. The actual PDF document functions can be password protected and encrypted; with options on allowable and unallowable functions.

This is going to sound like an ad for Bluebeam, but I know that under Bluebeam Studio, I can see who checks documents out and if there are any changes to those documents.

Additionally, nobody outside outside my office can see those documents without an authorization from me. You say that I can not see your PDF? Give me an example, it became interesting to me.

I'll be back from vacation on Monday and look at your file. I previously wrote the password and other functions can be changed. You can change who changed, who saved and more. If there is an unprotected PDF, it can be completely changed. For example - from the existing file with a password everything that is in the new file is completely copied.

The new file will be without any protection. If you have a library for changing PDF, then you can do anything. Feel free to try and open this file or import it to AutoCad and let me know if you are able to.

I will then raise my little white flag. To avoid this behavior the next time that you open the document, attach a new template. Alternatively, change the template to the global template Normal. To attach a template, follow these steps:. On the Tools menu, click Templates and Add-ins. In the Templates and Add-ins dialog box, click Attach. In the Attach Template dialog box, select the template that you want, and then click Open. In the Templates and Add-ins dialog box, click OK. For more information about the Microsoft Office Compatibility Pack, click the following article numbers to view the articles in the Microsoft Knowledge Base:.

Symptoms This behavior occurs when the attached template was created in Word Cause To work around this behavior, click Cancel in the File Conversion dialog box. To attach a template, follow these steps: On the Tools menu, click Templates and Add-ins. Workaround For more information about the Microsoft Office Compatibility Pack, click the following article numbers to view the articles in the Microsoft Knowledge Base: How to use earlier versions of Excel, PowerPoint, and Word to open and save files from Office programs Error message when you try to open or to save a Office document: "Do you want to download a compatibility pack so that you can work with this file" How to install the Microsoft Office Compatibility Pack so that you can use earlier versions of Excel, PowerPoint, and Word to open and to save files from Office programs More Information.

Need more help? I need to get a very important Word doc to someone and the converted PDF does not allow editing, and changes the look of the original so its useless. This thread is locked. You can follow the question or vote as helpful, but you cannot reply to this thread.

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