What is PDF ?
PDF acronym of portable document format, was first developed in 1991 a means to share a document which contain all the text formatting and image information inside. In early days PDF was mainly used in desktop publishing, but later it became #1 file format of choice with the increasing popularity of WWW (World Wide Web) and internet. Started with the proprietary file format, later in 1993, Adobe made the PDF specifications available for free of charge making it easy for third-party companies as well as open source community to come up their own tools and scripts as well as implantation of PDF.
Due to the wide adaptability of PDF, from time to time PDF readers (Adobe as well as third-party developed) has been abused for spreading malware and viruses. At the same time, security researchers have managed to exploit the systems using vulnerability present in PDF implantation on the device.
In order to open a PDF document you need to have a PDF reader/viewer. For years Adobe has provided Adobe PDF Reader, a free software to open and read PDF documents, however for editing you need purchase Adobe Acrobat Pro software which costs money but comes with tons of features required for corporates as well as publishing agencies.
Today, most browsers aka Firefox, Chrome, Microsoft Edge comes with built-in PDF viewer, making it easier for users to instantly preview and open PDF documents right in their browser. Even on Mobile too, browsers have built-in PDF reader.
Over the years many online services have come up, which lets you to open/edit or convert PDF documents into different file format which will be reviewing here at PDFGeek.com
PDF documents can be encrypted/password protected or digitally signed for authentication; this feature so makes the PDF #1 choice in banking industry for sending Credit card or account statement report. With owner password, the document creator can put several restrictions such as the ability to modify or edit the documents.
The latest version of PDF implementation also allows for the digital signatures, meaning electronically sign a PDF without need to paper printout. Also, you can instantly scan a paper or form and with built-in OCR it will convert that PDF smart files where you can instantly search, share or store the document.
A small look at Google Search trend shows that the PDF file format is still going strong and in fact, user interest is doubled since 2004.
Why PDFGeek ?
PDFGeek, as the name suggests, will be the place for all your PDF related queries. You have a problem in opening PDF files on Windows, Mac or Linux; we are here to help you with it. You want to modify, merge or extract the contents of the PDF document, then browse for tutorials at PDFgeek and learn how to do it. Our sole purpose is to educate our readers and solve their problems related PDF documents.
We hope to see you around, feel free to send us your query or issues related to PDF documents and we will try to help it.
You can read more about how was the PDF format created here at Quora, answered by Alan Tracey Wootton.