How can we lock pdf files and how to unlock it?

 How can we lock pdf files and how to unlock it?

Password protection of your PDF file ensures that the PDF can only be opened by the intended recipient of the file. Password protection can also be used to prevent users from printing or editing the document. These settings can be further tweaked to allow only low resolution printing, and varying degrees of editing.

METHOD 1
To password protect your PDF document in Adobe Acrobat Reader,
go to Advanced > Security > Encrypt With Password.
A prompt will appear asking if you are sure you want to change the security settings. Click on Yes. 

Select Encrypt all document contents, check Require password to open document, and enter the password in the “document open password” field.
If you want control on the permissions to print and edit the document, 
check Restrict editing and printing. Provide the password for changing these settings. Make sure Enable copying of text, images, and other content is unchecked. Click on OK.

A prompt will appear asking you to confirm the passwords you have entered. Another prompt states clearly that not all third-party programs respect the security settings in the PDF file. 

METHOD 2
To lock the pdf files, you need to set a password before you convert the file to pdf. It's easy to make it with Simpo PDF Creator. 

You can set "not allow printing", "not allow copy" etc.

To unlock the pdf, you could use password remover software, or convert the pdf to a new pdf again.

METHOD 3

If you want to lock your PDF file and then unlock it, you can try A-PDF Password Security. This software is professional on protecting any PDF file with different security levels, and you can set restrictions such as non-printing, non-copying to PDF files. And also you can use the tool to remove those restrictions as you doesn't need. 
METHOD 4

use Solid PDF Creator. This will allow you to print your files to PDF and you can set the 

security level that it can only be opened with a password you set. This is a free download and free trial

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10 Tips Dan Trick Untuk iPad 2

Seperti yang Anda ketahui, Apple iPad tidak dilengkapi buku panduan berbahasa Indonesia. In fact, perangkat ini tidak dilengkapi buku panduan dalam bahasa apapun! Tidak dalam bahasa Inggris, Spanyol, Italia, Perancis, Thailand, apalagi bahasa Urdu. Jika Anda membutuhkan buku panduan, maka Anda harus mengunduhnya terlebih dahulu.

Tentu saja, kondisi ini memiliki dampak buruk yang mudah diduga

Express your feeling through google

Its Valentine's day around so here are some special Google search  keywords to express your feelings. Google search is extremely helpful and it has some in built functions which makes your results meaning full, like if you go to google.com and type 23*33 in search bar then the result which will come out will be 23 * 33 = 759. So the same way as calculator one can also use Google as graphs. all you had to do is put a graphical equation in Google search bar and hit enter.

Just copy and paste following keywords in google search to see some lovely results..! <3. 

• (sqrt(cos(x))*cos(75x)+sqrt(abs(x))-.7)*(4-x*x)^.2, sqrt(9-x^2), -sqrt(9-x^2) from -4.5 to 4.5, -x

• (sqrt(cos(x))*cos(200*x)+sqrt(abs(x))-0.7)*(4-x*x)^0.01,sqrt(9-x^2),-sqrt(9-x^2)

• (sqrt(cos(x))*cos(200x)+sqrt(abs(x))-0.7)*(4-x*x)^0.01, sqrt(9-x^2), -sqrt(9-x^2) from -4.5 to 4.5

• abs(x)-(1-x^2)^(1/2), abs(x)+(1-x^2)^(1/2), x+ 0.25 from -3 to 3

• ((sqrt(cos(x))*cos(500*x)+sqrt(abs(x))-0.4)*(4-x*x)^0.1
  
• sqrt(1-(abs(x)-1)^2), arccos(1-abs(x))-pi
  
  
  
  Note:- please don't copy bullet sign just copy the equation  



•     (sqrt(cos(x))*cos(75x)+sqrt(abs(x))-.7)*(4-x*x)^.2, sqrt(9-x^2), -sqrt(9-x^2) from -4.5 to 4.5, -x

•    abs(x)-(1-x^2)^(1/2), abs(x)+(1-x^2)^(1/2), x+ 0.25 from -3 to 3
  
  
  

•   (sqrt(cos(x))*cos(200*x)+sqrt(abs(x))-0.7)*(4-x*x)^0.01,sqrt(9-x^2),-sqrt(9-x^2)

•   (sqrt(cos(x))*cos(200x)+sqrt(abs(x))-0.7)*(4-x*x)^0.01, sqrt(9-x^2), -sqrt(9-x^2) from -4.5 to 4.5

• sqrt(1-(abs(x)-1)^2), arccos(1-abs(x))-pi

• ((sqrt(cos(x))*cos(500*x)+sqrt(abs(x))-0.4)*(4-x*x)^0.1

Also check some other Google tricks

Know Who Used Your Pc In Your Absence & what Did He Do?

HI GUYS    I AM BACK WITH AN INTRESTING TRICKKKK  . RECENTLY  WAS BUSY IN EXAMS    BUT NOW FREEEE   SO ENJOY THE TRICK

Want to know Who Used Your Pc In Your Absence & what Did He Do?

just follow these simple steps



start > run >eventvwr.msc


Events are stored in three log files: Application, Security, and System.

These logs can be reviewed and archived.

For our purposes we want the System log. Click on "System" in the left-hand column for a list of events.

Look for a date and time when you weren't home and your computer should have been off.

double click on the eg: info n it will show u the detail.

You can also use this log to see how long someone was on the computer.

Just look at the time the computer was turned on and off for that day.




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आप के कंप्यूटर के लिए एक फ्री अलार्म घडी |

आप के कंप्यूटर के लिए एक फ्री अलार्म घडी जिसमे आप अपनी सुविधा अनुसार किसी के जन्मदिन या फिर किसी और कार्क्रम का अलार्म लगा सकते हैं ।

इस्तेमाल में बहुत ही आसान  और साइज़ में सिर्फ 1.55 mb का है ये सॉफ्टवेर ।

click here for download.

Google Adsense Menerima Bahasa Indonesia

Google adsense adalah salah satu tempat paling subur di internet untuk mengais recehan dolar, oleh karena itu para webmaster dan blogger Indonesia sangat merasa lega saat ini karena per tanggal 2 Februari 2012 Google Adsense sudah menerima semua weblog berbahasa Indonesia. Dengan adanya dukungan google untuk blog berbahasa Indonesia berarti bahwa iklan google saat ini yang terpasang di web atau

How to Generate thousands of genuine email ids for free

Hi, here I am once again, with a new trick about How to generate 1000's of genuine e-mail id's with in 5 to 10 minutes , all you have to do is just follow these simple steps  . its up to you that how you want to use them . So be careful about it.  :-)

Requirements :-

• Mozilla Firefox or Google Chrome browser.
• Auto pager Plugin. Download it from here:- For Mozilla Firefox,  For Google Chrome
•  A bit brain (very important)

LETS START GENERATING E-MAIL ID'S :-

•  Go to http://www.google.com, click on "Search settings" in the top right corner and change the number of results to display "100" per page, now click on Save preferences.

• Now in  the search bar type a keyword(s) and the e-mail extension in speech marks For example :- xyz"@gmail.com" What it will do is search for web-pages that contain Gmail e-mail adresses and that are also related  with your keyword. The speech marks around "@gmail.com" make sure that "@gmail.com" is on every web page that is a result of the search.

• You can also search single websites for e-mail adresses as shown on the example :- site:twitter.com "@gmail.com" The  example shown above will search the whole of twitter.com for"@gmail.com" email adresses. 
• Now With your results in focus, click the arrow at the side of the AutoPager icon as shown in the picture below. Then goto "Immediately load > All pages" .as shown in screenshot. With your search results still in focus, scroll all the way down and AutoPager should load the next page of results onto the same  page you are currently on. Keep scrolling till all pages have loaded onto the samepage.

• Press "ctrl + a" to select all of the pages then press "ctrl + c" to copy the results. With the results still in the clipboard (Still copied) go to http://www.skymem.com/ or Click here  . Paste your results into the first box which says "1. Put text with email addresses here:" and just click on Start Extracting Emails Button on top of that box. The settings should already be correct with "unique emails" and "sortticked" So no need to Touch that option. 
• The e-mail adresses should show in the Results box (3rd box)  almost instantly.

• Now copy the results from the results box paste them into Notepad. Sometimes the e-mail address seem to end in ".com." instead of just".com" so in notepad go to "Edit > Replace" and in the "Find what" text-box type ".com." without the  speech marks("") in the "Replace with" textbox type".com" , without the speech marks.