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PDF

Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1993 used to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems. Based on the PostScript language, a PDF file encapsulates a complete description of a fixed-layout…

History & Standards

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Research this topic

Explore the main themes, entities and connections around PDF. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Developed by
Adobe Inc. (1991–2008) ISO (2008–)
Extended to
PDF/A, PDF/E, PDF/UA, PDF/VT, PDF/X
Filename extension
.pdf
Initial release
June 15, 1993; 33 years ago (1993-06-15)
Internet media type
application/pdf, · application/x-pdf · application/x-bzpdf · application/x-gzpdf
Latest release
2.0

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

History

Technical details

File format

Imaging model

Additional features

Security

Software

Alternatives

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

Map overview Semantic statistics

PDF

Nodes210
Edges209
Triples317
Avg. degree1.99
Density0.009524
Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

PDF

Top relations

related to Raster images · 30
PDF → ASCII, ASCII85Decode, ASCIIHexDecode, CCITT, CCITTFaxDecode, DCTDecode, FlateDecode, Group, Image, Image XObjects, Images, ITU-T, JBIG2, JBIG2Decode, JPEG, Less, Lock-gray-alt-2, Lock-green, Lock-red-alt-2, LZW
related to Viewers and editors · 26
PDF → Additionally, Adobe Acrobat, Adobe FrameMaker, Adobe Illustrator, Adobe InDesign, Adobe Photoshop, Chrome, DocBook PDF, Firefox, Ghostscript, Google Docs, Google's, LibreOffice, Linux, Many PDF, Microsoft Office, Microsoft Windows, Much, PDFs, Programs
related to Annotation · 21
PDF → Adobe Acrobat, Apple's, BibDesk, Foxit Reader, Freeware Qiqqa, GNU General Public License, In, LaTeX, Linux, Microsoft Windows, One UNIX, PDFedit, PDFs, PDFSync, Preview, Skim, SyncTeX, The, The Text Verification Tool, There
related to External links · 21
PDF → Adobe, Adobe Extensions, Congress Adobe PDF, EPS, ISO, Library, October, Official, PDF Association, PDF AssociationPDF Cheat Sheets, PDF Reference, PDF Specification, PDF Specification Index, PDF/A, PDF/X, PostScript, PS, Sponsored, Summary, The PDF Association
related to Accessibility · 14
PDF → Adding, Adobe's Reader, Hal, JAWS, Kurzweil, Leading, Moreover, One, PDF's, PDFs, Reflow, Some, The, Window-Eyes
related to history · 14
PDF → Adobe, Adobe's, Camelot, Common Ground Digital Paper, DjVu, Envoy, Farallon Replica, In, Interchange PostScript, IPS, John Warnock, PostScript, The, Unlike
related to Further reading · 13
PDF → August, December, Document, International Organization, ISBN, ISO, March, Part, Portable, Retrieved December, Retrieved January, Standardization, Wayback Machine
related to Malware vulnerability · 13
PDF → Acrobat Reader, Adobe Acrobat, Adobe PDF, It, JavaScript, Microsoft Outlook, OUTLOOK, PDFWorm, Peachy, Some, Such PDF, The, Trojans
related to Native display model · 12
PDF → Display PDF, Display PostScript, Mac OS, OS-standard, PICT, PNG, Quartz, Safari, System-level, The, The Preview, When
related to Optional Content Groups (layers) · 11
PDF → Basically, CAD, Displayed, Layers, OCGs, Optional Content Configuration Dictionaries, Optional Content Groups, Optional Content Properties Dictionary, Suppressed, This, With

Important terminology Word statistics

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

file adobe format document files postscript iso may text software content graphics page also including specification standard used objects use

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
PDFDeveloped byAdobe Inc. (1991–2008) ISO (2008–)1.00infobox
PDFExtended toPDF/A, PDF/E, PDF/UA, PDF/VT, PDF/X1.00infobox
PDFFilename extension.pdf1.00infobox
PDFInitial releaseJune 15, 1993; 33 years ago (1993-06-15)1.00infobox
PDFInternet media typeapplication/pdf,1.00infobox
PDFInternet media typeapplication/x-pdf1.00infobox
PDFInternet media typeapplication/x-bzpdf1.00infobox
PDFInternet media typeapplication/x-gzpdf1.00infobox
PDFLatest release2.01.00infobox
PDFMagic number%PDF-1.00infobox
PDFOpen format?Yes1.00infobox
PDFStandardISO 32000-21.00infobox
PDFType codePDF (including a single trailing space)1.00infobox
PDFUniform Type Identifier (UTI)com.adobe.pdf1.00infobox
PDFWebsiteiso.org/standard/75839.html1.00infobox
PDFis asubset of PostScript0.90text
PDFis adescription of a digital typeface0.90text
PDFis astylized use of the format that builds on the logical structure framework introduced in PDF 1.30.90text
PDFis aPDF file including interactive content that can be embedded or linked within the file0.90text
PDFis adigital catalog for an E-commerce business0.90text

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Min side: 3
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