INTRODUCTION
Neat Tricks 33 presented the
procedure for downloading and using Irfanview. This is a free and very
useful graphic viewer. This lesson will use Irfanview to change the size
of your graphics. Clicking (or double clicking) a graphic will cause it to
be viewed by Irfanview if it has been installed. It will be assumed that
you have set Windows for double click. If yours is set for single click,
“single click” where instructions read “double click”. If that doesn’t work, use
the “double click”. Also, the Computer Lab computers have graphics in a
folder named Graphics. If your graphics are in a different folder, use
that folder wherever the lesson refers to Graphics.
VIEW GRAPHIC “FULL SCREEN”
Double
click My Computer > click the + next to Drive C: >
double click the Graphics folder > click View
> click Details (this will enable you to view the type of file
and size of the file) > double click a BMP graphic >
click View > click Full Screen
CHANGE THE SIZE OF A GRAPHIC AND SAVE
While
viewing a graphic (above paragraph), click Image > click
Resize/Resample > (if the Width: is less than 400, choose another
image) > highlight the numbers in the Width: field and type 400
> (New Size and Preserve Aspect Ratio should be selected) > click
OK > (the screen will display the resized image) > click
File > click Save As > Save In: should read Graphics
(if not, click the down arrow to the right of the Save In: field
and navigate to the Graphics folder > in the File Name: field, add an
S to the end of the name (S for Small) > Save As
Type: should be JPEG (Joint Photographic Expert’s Group), if not,
click the down arrow to the right of the field and select
JPEG > click Save.
COMPARE THE SIZE AND QUALITY OF TWO FILES
Return to My Computer (It should be viewed automatically. If not,
click the Windows Explorer icon on the Task Bar) > within the
Graphics folder, scroll to the two files (the .BMP and the .JPEG files)
and compare the Size. Double click the .BMP
file > click View > click Full Screen >
(carefully observe the detail of the displayed graphic) > press
Esc. Double click the .JPEG graphic > (carefully
observe the detail of the displayed graphic) > press ESC.
(In most cases, the smaller .JPEG is as good as the larger .BMP).
CONCLUSION
Irfanview is very useful in
viewing graphics, changing file size and changing file type.
WEB SITES OF INTEREST
Bill’s Home Page: http://bzus.com (click “Neat Tricks” to view the
class notes)
Leisure Village’s Web Page: http://leisurevillage.us (this links to LVCC etc.)