1. Assignment 3 – Graphic File Formats Jack Kelly jkelly85@vt.edu 5/26/2012

2. Image File Compression File TypeCompressedCompression Method Compression Results BMPOptionalLosslessVaries from good to none EPSNoN/A GIFYesIf 256 colors or less lossless; otherwise lossy. Good JPGYesLossyGreater compression means poorer image quality PCTYesLosslessGood

3. Image File Compression (continued) File TypeCompressedCompression Method Compression Results PCXYesLosslessModest PDFYesLossless or lossyMinimum – ½ ratio Medium – 1/5 ratio Maximum – 1/10 ratio PNGYesLosslessVery good PSDNoN/A TGAOptionalLosslessVaries from good to none TIFOptionalLossless or lossyVery good WMFNoN/A

4. PowerPoint 2011 Readable File TypeInsert Picture From File BMPYes EPSYes GIFYes JPGYes PCTYes PCXNo PDFYes PNGYes PSDYes TGAYes TIFYes WMFNo

5. Not All Browsers Are The Same File TypeDisplays in Safari 5.1Displays in Firefox 11 BMPNoYes EPSNoPrompts to view in Preview GIFYes JPGYes PCTNoYes PCXNoPrompts to save file PDFYesPrompts to view in Preview PNGYes PSDNoPrompts to save file TGANoPrompts to view in Preview TIFYes WMFNoPrompts to save file

6. Recommended Image File Types PNG – Offers very good compression – Vector graphics => good for line art JPG – Good for photographs – Control over compression options to optimize file size GIF – Excellent for simple line art graphics with little color – Good compression These formats are viewable in current browsers.