Presentation on theme: "All About File Formats Mr. Butler John Jay High School Department of Technology."— Presentation transcript:
All About File Formats Mr. Butler John Jay High School Department of Technology
Why Study File Formats? Important to recognize which formats should be used with the appropriate task Your not wasting your time spending hours working in the wrong file format Help understand the different file formats and help you choose the right one for each project
When you save a document in the same format as the program you’re working in. Ex. If you save a Photoshop image as a Photoshop file (instead of as a TIFF of JPEG).
Non-Native file formats The type of file formats that each software program can create or accept Sometime you cannot open new files in old programs Ex. Using Microsoft Word XP at school and trying to open it at home using Microsoft Word 98
Non-Native file formats Exporting or saving as non-native file formats Export a file or Save As with a different name and format Importing and opening non-native file formats Importing – bringing a non-native file into an existing page of an application May also be called insert, Get Picture, Place Open – just as if it was its own native format, some programs may just open it!
TIFF is an acronym for Tagged Image File Format Is a raster (bitmapped) file format Almost every raster program, such as image editing or paint programs, can save as TIFF’s and can be import TIFF’s TIFF is also the best format to use between Windows and Macintosh.
Scanning as TIFF TIFF was originally created for scanning
LZW compression Compression means the information in the file is squished so the file takes up less disk space. There are two generic types of compression: Lossy – some data in the files is lost Lossless – no data is lost during compression LWZ stands for Lempel, Ziv, and Welch (the three creators of compression)
GIF file format GIF is an acronym for Graphical Interchange Format Pronounced “gif”, not “jif” because it stands for “graphical” GIF format can be displayed on any computer GIF was originally created by CompuServe Online for transferring images online
GIF file format GIF images are found everywhere on the World Wide Web GIF image must use the Index color mode, which has a maximum of 256 colors (8-bit)
JPEG is an acronym for Joint Photographic Experts Group Pronounced “jay peg” JPEG is a compression format that makes images into smaller files JPEG is a lossy compression Many stock photo companies save their images with JPEG compression
PDF is an acronym for Portable Document Format It is a compression scheme that embeds, right within the file All the necessary information to view a single document is present: Text, images, page breaks, fonts, etc.
Any Questions Take a moment and finish up any blank questions on your notes sheet.