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Unlocking security from PDF files?

Satcom123

Satcom123

Super Member
Here's a question that maybe someone could shed light on. I use many PDF downloads from hifiengine.com as I'm sure many of you do also.
I was trying to manipulate some schematics to resize them and such to make them larger.

I tried to convert them to another program but security doesn't allow for that.

It says they are locked with a security. Is there a way to unlock any of these? Anyone got any ideas. Thanks.
:scratch2:
 
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Don't know about unlocking, but if all else fails, take a screen shot and save it as as jpeg. Then you can do whatever you want, if the quality is good enough.
 
Yes I just figgled around using snip it tool. Put it on paint but having difficulty manipulating it once there. Also when selecting a screen it greys out in the background and that gets printed with it.
Kinda frustrating.
 
PDF is a vector format, which should scale to any size, unless the embedded image was scanned to a raster format. Are you not able to simply resize in Adobe Reader? You can select paper and scaling when printing in Reader...
 
chicks said:
PDF is a vector format, which should scale to any size, unless the embedded image was scanned to a raster format. Are you not able to simply resize in Adobe Reader? You can select paper and scaling when printing in Reader...
Click to expand...

Yes, I do that quite a lot, but I have the luxury of access to an A3 printer (colour if needed) - and a version of adobe reader that supports print 'tiling' :)

The difficulty is that many times the provided PDF is a copy of a copy of a copy etc (or raster image) - thus the clarity is shot to pieces. :sigh:
 
Search online for how to unlock a pdf but one easy way on any microsoft PC is to open the pdf and "print" the pdf. Then choose printer as xps writer. Save it to your desktop.
You should be able to convert back from xps to pdf using an online converter -a quick search shows zamzar.com but not used them before and some have page limits and manuals tend to be huge.
 
this may work or it may not .. right click the file and select open with .. select whatever your manipulation program is ..i use gimp ..its like many others but works for me ...
funny thing is i have never come across a locked pdf .. right click look at properties and security is none .might be the way i set up this computer though ..its set so i have full rights to everything contained in the system . doesn't work with everything but very nearly ..
 
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Admin rights to the computer is a different thing than having security on a PDF file.

Files added for anyone who hasn't seen a secured Acrobat file.

One is password protected for opening, the other password protected for printing or changing. As others have eluded to, password protection of printing, and possibly of changes, is only fully enforced through Adobe software.
 

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