types of file extensions

Extension

File Type

Description

.txt

ANSI Text File

Stores basic alphanumeric text and symbols, as defined by the ANSI standard.

.rtf

Rich Text Format

A standard created by Microsoft for establishing document formatting.

.html

HTML File

HTML file, for viewing in web browsers.

.bmp

Bitmap Graphic

Standard bitmapped format for storing graphics. High quality, but high file size.

.jpg/.jpeg

JPEG Graphic

Compressed format for storing high-detail images, like photographs. Low file space, but loses certain details in the compression process.

.wav

WAV Audio File

Standard format for storing audio files in PC computers.

.avi

AVI Audio/Video File

Audio Video Interleave file.

.zip

ZIP Compressed Archive

The ZIP compressed file format is the most common format for compressing data on Windows computers.

.xls/.xlsx

Microsoft Excel Spreadsheet

.xls/.xlsx is a file extension used on computers running Microsoft Windows to identify files created in Microsoft Excel.

.doc/.docx

Microsoft Word File

.doc/.docx is a file extension used on computers running Microsoft Windows to identify files created in Microsoft Word.

.ppt/.pptx

Microsoft PowerPoint

.ppt/.pptx is a file extension used on computers running Microsoft Windows to identify files created in Microsoft PowerPoint.

.csv

Comma Separated Values File

CSV files can be used with most any spreadsheet program, such as Microsoft Excel, OpenOffice Calc, or Google Spreadsheets.

.pdf

Portable Document Format

The PDF format is commonly used for saving documents that can be viewed on multiple platforms.

.ods

ODF Spreadsheet

An ODS file is a spreadsheet created by Calc. It stores data cells that are organized into rows and columns.

.ots

ODF Spreadsheet Template

The OTS templates are used to save spreadsheets that budgets planners and calendars.

.odp

ODF Presentation

Open Document Presentation file format that is used by some presentation applications, such as OpenOffice Impress.

.otp

ODF Presentation Template

OTP files usually contain graphics, spreadsheets, text, slides, and other presentations created with style.

.odt

ODF Text

An ODT file is the main file used by Writer to save documents the same way that Word saves documents in the .docx file.

.ott

ODF Text Template

An OTT file is a document template. It contains the page layout and default styles for a text document. OTT files are used for authoring.

.odb

ODF Database

It stores an archive of data files that comprise the database and is formatted according to the Open Document standard.

.oxt

LibreOffice Extension

A file with the .oxt file extension is an OpenOffice extension file. They are used to add more features to OpenOffice applications.