Knowledge Base

Knowledge Base

Learn about everything there is to know about PDFs and more

File Formats

AZW

AZW – Amazon Kindle eBook File

AZW3

AZW3 – Amazon KF8 eBook File

BMP

BMP - Microsoft Windows Bitmap

CBR

CBR - Comic Book RAR Archive

CBZ

CBZ - Comic Book Zip Archive

DJVU

DJVU - DjVu image files

DOC

DOC - Microsoft Word Binary File Format

DOCX

Word Document

EPUB

EPUB - Electronic Publication

FDF

FDF – Forms Data Format

GIF

GIF – Graphics Interchange Format

HEIC

HEIC (High-Efficiency Image Coding)

HTML

HTML - Hypertext Markup Language

JPG

JPG – a Digital Image Format

MOBI

MOBI – Mobipocket

ODT

ODT – an OpenOffice document file format

PDF

Portable Document Format

PDF/A

PDF/A – PDF file for long-term archiving

PDF/E

PDF/E – Engineering

PDF/UA

PDF/UA – Universal Accessibility

PDF/VT

PDF/VT – Variable Transactionprinting

PDF/X

PDF/X - PDF file for easier graphics exchange

PNG

PNG – Portable Network Graphics

PPT

PPT – Microsoft PowerPoint Presentation File

PPTX

PPTX - Microsoft PowerPoint 2007 XML Presentation

RTF

RTF - Rich Text Format

SVG

SVG - Scalable Vector Graphics File

TXT

TXT – Plain Text File

TIFF

TIFF - Tagged Image File Format

XLSX

XLSX - Microsoft Excel Open XML Spreadsheet

XPS

XPS - XML Paper Specification

Dictionary

AI (Artificial Intelligence)

Action

AT – Assistive Technology

Bleedbox

PDF - Bleedbox

Blend Space

Bookmarks

CMYK

Collection

Conformance Levels

Cropbox

PDF - Cropbox

COS

Carousel Object Syntax

Digital Signature

Encryption in PDF

File Attachment

Flattened PDF

PDF - Flattened PDF

Form (AcroForm)

Fragment Identifier

Hybrid PDF

Hybrid-reference PDF file

Incremental update

Integer page index

Linearized PDF

PDF - Linearized PDF

Mediabox

PDF - Mediabox

Object Stream

OCG

Optional Content Group

OCR

Optical Character Recognition

Page labels

PDF 2.0

PDF Annotation

PDF Layers

PDF/R

PDF Metadata

PDF/VCR

Variable Content Replacement

PDF Version

PDF Watermark

PDF Widgets

PostScript

Page description language

RGB

RIP

Raster Image Processor

Rolemap

Transparency in PDF files

PDF - Transparency

Trimbox

PDF - Trimbox

Tagged PDF

PDF - Tagged PDF

XFA

XFA – XML Forms Architecture

XFDF

XFDF – XML Forms Data Format

XMP

XMP – eXtensible Metadata Platform