Subtitles of the Movie

OK. Now, the next thing that I wanted to talk to you about is what I call the PDF myths. I have three PDF myths that I always love to bring up and discuss with people and sometimes it helps them understand really what Acrobat and the PDF file format are really all about. So here we go. PDF myth number one is PDFs are always secure. That's the myth, that PDFs are secure and they're not. You have to intentionally put security onto your PDF files and this is something that we'll take a look at a little bit later on. But know this; that I can open up a PDF file and assuming that it doesn't have security on it, then I can start editing it with some of the different tools that I have available to me inside Acrobat. For example, imagine this was your file and I start tearing it apart like this, pulling content out, even deleting content like this or imagine I were to come in here and start changing some of the text inside your PDF file. Maybe something like this. Maybe I take an entire word out, right? Or, you know, add in content like this. It's unbelievable. I've seen people do huge changes to PDF files that they were not the author of. So you have to be really, really careful here with your PDFs. They are absolutely not secure. Now, you know what I'm going to do while we're on the subject is I'm going to show you where you can go to find out if your PDF file is secure or not. But before I do that, I'm going to go and choose File, then down to Revert and what that does is that basically gets rid of all of the changes that I just made inside this file. Now, where I can go to find out if this file has any security on it is I'm going to head to the File Menu and then all the way down to Properties. Inside the Document Properties Dialog Box I'm going to click on the Security Tab and if I see Allowed all the way down the board here, that means that I can make whatever change I want to this PDF file. So if someone sends you a PDF and it says Allowed down the board inside this dialog box, you can make whatever changes you want. But remember, it's a double-edge sword. You might send out a file and someone else on their end might open up this dialog box. Maybe they're watching the same training you are and they look inside this dialog box and find out the same thing about your file. So be careful. OK, so that's myth number one, that PDFs are always secure. PDF myth number two is, I don't know if this will really be a big deal to you but it's a big deal to me, being a design guy; fonts. The myth is that fonts are always embedded in a PDF file and that's not true. What that means is a lot of times people thing that the fonts that they've used inside their file actually become a part of their file and that's not true. So I'm going to go into that same dialog box. File and then down to Properties and this time I'm going to head for Fonts and inside this Fonts Menu you can tell what fonts have been used and you can also tell if they are embedded or not embedded or what I have here, which is called Embedded Subset. What that means is only the characters that I've actually used become embedded in the PDF file. So we have to be really careful about that. Not the entire font; only the characters that I've used. So that is also a myth here inside Acrobat, that fonts are always embedded. OK. I've got one more here for you. The third PDF myth is that all PDFs are created with the same amount of quality and that's not true either. I could have two PDF files coming from the same source, the same Word document or the same InDesign file or what have you and they can both be dramatically different in terms of file size, in terms of quality. As a matter of fact, I have two PDF files open right now. I'm going to go and tile them side by side here so you can see them both. There we are there. Actually, you know what? Let me put them side by side. There we go. That's better. Alright. Now, there's a slight difference in terms of the color inside these files and that's because these two files are of different qualities. But what's interesting though is that onscreen they look nearly identical. So this is something to remember; that onscreen things usually look fine. Usually you find out what kind of quality you're dealing with when you try and print the file. Now, what I'm going to do is I'm going to click over on the left-hand side and I'm going to choose File, Properties one more time. This is our theme here inside this lesson here. I'm going to go to the description tab up at the top and have a look at my file size. Way down towards the bottom; File Size: 1.16 mgs. So that's not really that big. I'm going to cancel out of this. I'm going to go over to the guy over on the right-hand side and go and check out his file size. So same story. File, Properties, Description Tab. This guy is 3.71 mgs. So you can see there's a dramatic difference in the file size but both PDFs look nearly identical onscreen. When we get into creating PDFs, I'll show you exactly how to do this, exactly how to change the quality, change the file size of your PDFs depending on what you want to use the PDF file for. Is it going to be sent to a service provider and they're going to put it on a printing press? Or is it going to be posted online or emailed? So we'll talk about this a little bit later on, as I say. There's our three PDF myths inside Acrobat. PDFs are not secure. Fonts are not always embedded and PDFs are not of equal quality.