A file extension, or file name extension, is the letters immediately shown after the last period in a file name. For example, the file extension.txt has an extension of .txt. This extension allows the ...

"Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware and operating systems," as quoted from Wikipedia. The original ...

Initially created by the Adobe Corporation, Portable Document Format (PDF) allows users to share electronic documents across multiple platforms and retain formatting ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. We tested out the best free PDF editors for designing and modifying documents completely free of ...