File Extension Search

.pdf File Extension

Developer: Adobe Systems
File type: Portable Document Format File
You're here because you have a file that has a file extension ending in .pdf. Files with the file extension .pdf can only be launched by certain applications. It's possible that .pdf files are data files rather than documents or media, which means they're not meant to be viewed at all.

what is a .pdf file?

PDF files are generally classified as data files, and these documents are commonly known as portable document format files. Developed by Adobe Systems, the PDF format was implemented in order to provide wider cross compatibility support for viewing and sharing content across widely used systems. The content of a .pdf document normally consists of text, visual elements like images, charts and tables, annotations, bibliographies, indices, footnotes and endnotes among others. Formatting attributes and page layout specifications can be integrated into the content of a PDF file by accessing the features of widely used PDF authoring and editing applications. The technology behind the PDF format allows the content of these PDF files, when viewed in a computer monitor, to look closely similar to its printed version. As of this writing, popular Web browsers have been implemented with support for viewing PDF documents through certain plugins, and the latest version of Google Chrome can be used to open and view the content of a .pdf file without installing any plugin.

how to open a .pdf file?

Launch a .pdf file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .pdf file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .pdf files aren't yet associated with it. In this case, when you try to open a .pdf file, you can tell Windows which application is the correct one for that file. From then on, opening a  .pdf file will open the correct application. Click here to fix .pdf file association errors

applications that open a .pdf file

Adobe Acrobat x

Adobe Acrobat x

Adobe Acrobat X is a PDF management software, which is a set of various applications for the use of Portable Document Format or PDF files. It allows a user to not just view PDF files but also create from scratch or through a template available on the program, manage, print, and share. The 10th version of Acrobat, which is called Adobe Acrobat X, was first introduced in the year 2010 on November 15. It has new cool features like “sandboxing” protection to secure PDF files for the later versions of Windows OS computers, particularly Windows 7, Windows XP, and Windows Vista. This version of Acrobat X is also made compatible with Mac OS, iOS and Android, but not with Linux. The newest version of Acrobat X is Adobe Acrobat XI, which is the 11th version, that was recently announced last October 1, 2012 and expected to be commercially available on October 15, 2012. It is packed with a graphical user interface that is originated from the 10th version for all desktop systems. However, it has new cool features such as the ability to export PDF files to Microsoft PowerPoint presentation file, integration of cloud services, and touch friendly capabilities for compact mobile devices.
Acrobat Reader

Acrobat Reader

Adobe Reader is a versatile software used for opening, viewing, and interacting with PDF documents. Among the many different programs that open PDF documents, Adobe Reader boasts being able to open and interact with all different types of PDF documents. This program allows you to search for keywords and phrases within the document, print all or a fraction of the document, and zoom in varying degrees to view the content at a smaller or larger size. PDF documents are used heavily today because they allow a person to view a document exactly as it was originally created and to print a document to exact specifications, regardless of what text editors or other viewing programs are available to that person. Having a PDF reader like Adobe Reader is essential for accessing PDF documents, and is considered the first PDF reader choice of most people. It works for the latest Windows operating systems, including Windows Vista and Windows Server 2008.
PDF Colony PDF Index Generator

PDF Colony PDF Index Generator

PDF Colony PDF Index Generator is an application that is classified as a PDF editing program, and this software is integrated with features for adding and editing indices into PDF files. This program is used by ebook developers for quickly and easily inserting indices into the content of their PDF materials. These PDF materials can also be presentation documents for office or business-related activities. Version 1.9 is the latest release of PDF Colony for the PDF Index Generator software. This software works by initially parsing the content of PDF files. Then, it gathers keywords from the content that are tagged as index words, and this software also collects location details of these index words. These details are then saved in a PDF file or text document that is specified by the user. PDF Colony PDF Index Generator is implemented with support for computers that are running on compatible Windows-based platforms.
Google Chrome

Google Chrome

Google Chrome is a web browser that was developed by Google and is being offered for free. Webkit rendering engine is being used in order to display different web pages. It allows its users to have the capability of creating shortcuts on their desktops which has the ability to launch different web applications using the browser. Users have the ability of installing different themes for Google Chrome which can be done by accessing option. Google Chrome was released in three different channels which are the Beta, Developer and Stable. A beta version was released for Android which allows its users to synchronize this with the ones that they have on their desktop in order for them to have the same browser tabs as well as bookmarks together with hardware acceleration and page pre-rendering. An iOS version was also released for Apple devices.

a word of warning

Be careful not to rename the extension on .pdf files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

what is a file extension?

A file extension is the set of three or four characters at the end of a filename; in this case, .pdf. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.

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