Adobe Portable Document Format file
File type: Document file, E-book file
Portable Document Format (PDF) is a fixed-layout document format developed by Adobe to preserve text, fonts, images, vector graphics, colors, and page structure across different devices and operating systems.
PDF documents can be opened with Adobe Acrobat Reader, web browsers such as Google Chrome, Microsoft Edge, Mozilla Firefox, and Safari, as well as dedicated readers and office applications. Creating or editing PDFs may require additional software.
Found 2 different file type records with the same pdf filename suffix.
File type category:
Document file
E-book file
Date updated: November 2, 2026
PDF was introduced by Adobe in the early 1990s and is now an open international standard maintained by the International Organization for Standardization as ISO 32000. Its primary purpose is to distribute documents while retaining consistent formatting regardless of the software, hardware, or operating system used to view them.
A PDF can contain text, embedded fonts, vector graphics, raster images, hyperlinks, annotations, forms, metadata, and digital signatures. Documents may be searchable, tagged for accessibility, optimized for printing, protected with passwords and usage permissions, or supplied with file attachments. Multimedia and JavaScript are also supported in some PDFs, although advanced features vary between viewers. The standard MIME type is application/pdf.
PDF files are commonly created by exporting or printing documents from word processors, spreadsheets, desktop-publishing programs, image editors, and web browsers. Specialized standards include PDF/A for long-term archiving, PDF/X for professional printing, and PDF/UA for accessibility. Scanned PDFs may contain page images rather than selectable text and require optical character recognition for text extraction.
On Windows, PDFs can be viewed with Adobe Acrobat Reader, Foxit PDF Reader, and modern web browsers. On macOS, Preview, Acrobat Reader, and browsers provide PDF support. Linux users can use applications such as Evince, Okular, Firefox, and Chromium-based browsers. Full editing, form creation, OCR, and advanced signing may require specialized software.
To open a PDF, double-click it and select a compatible application if your operating system asks which program to use. Adobe Acrobat Reader is available for Windows and macOS, most modern browsers display PDFs directly, macOS includes Preview, and Linux distributions commonly provide Evince or Okular.
If a document does not open correctly, update the viewer or try another application. Password-protected, damaged, digitally signed, or feature-rich PDFs may require Adobe Acrobat or another reader that supports the specific security and interactive features used by the document.
PDF files can be created by choosing Export as PDF or Print to PDF in many desktop applications. They can be converted to formats such as DOCX, ODT, TXT, JPG, PNG, or HTML using Adobe Acrobat, LibreOffice, image editors, and command-line tools. OCR may be needed when converting scanned pages into editable text, and conversion quality depends on the document's layout, fonts, images, and security permissions.
Online conversion services can convert PDFs without installing software, but uploading confidential, personal, or legally sensitive documents may create privacy and security risks. For offline conversion, desktop tools such as Adobe Acrobat, LibreOffice, PDFsam, and platform-specific PDF utilities provide greater control over privacy and output quality.
Languageapplication/pdfapplication/acrobatapplication/nappdfapplication/x-pdfimage/pdf25 50 44 46 2D 31 2E
%PDF-1.
25 50 44 46 2D 31 2E 30
%PDF-1.0
25 50 44 46 2D 31 2E 31
%PDF-1.1
25 50 44 46 2D 31 2E 32
%PDF-1.2
25 50 44 46 2D 31 2E 33
%PDF-1.3
25 50 44 46 2D 31 2E 34
%PDF-1.4
25 50 44 46 2D 31 2E 35
%PDF-1.5
25 50 44 46 2D 31 2E 36
%PDF-1.6
25 50 44 46 2D 31 2E 37
%PDF-1.7
25 50 44 46 2D 32 2E 30
%PDF-2.0
25 50 44 46 2D
%PDF-
Software applications that can open pdf files:
Microsoft Windows
Apple macOS / Mac OS X
Software applications that can edit pdf files:
Microsoft Windows
Apple macOS / Mac OS X
Software capable of saving pdf files:
Microsoft Windows
Apple macOS / Mac OS X
Programs for viewing pdf files:
Microsoft Windows
Apple macOS / Mac OS X
Software apps that create pdf files:
Microsoft Windows
Software apps that convert pdf files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Software apps that import pdf files:
Microsoft Windows
Apple macOS / Mac OS X
Software apps that export pdf files:
Microsoft Windows
Apple macOS / Mac OS X
Software apps that recover pdf files:
Microsoft Windows
Software apps that print pdf files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
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File type category:
Settings, options, themes or skins file
Date updated: June 24, 2022
File extension pdf is associated with the ArcView, a GIS software for Microsoft Windows operating system that allows users to view and edit GIS data.
This type of pdf files stores preference definitions.
These files probably are not meant to be opened directly.
This PDF file cannot be converted to anything else, it is not the standard PDF document.
Software apps that create pdf files:
Microsoft Windows
Software apps that manage or store settings in pdf files:
Microsoft Windows
Software applications that handle other tasks involving pdf files:
Microsoft Windows
online = can be converted online at 101convert.com
Online conversions and file conversion information are provided by 101convert.com.
