----- Original Message -----
Sent: Saturday, July 08, 2006 9:10
PM
Subject: RE: [amibroker] OFF-TOPIC:
Compression software
Compressing jpg files is not very effective (jpg is already very
compact).
(same applies to .pdf files)
As
an example: taking a photo whose jpg file size is 16.9kB and using
highest
compression possible with WinRar results in a file sized 16.8kB.
(more compact
than WinZip can do). Same photo saved as .png file has a size
of 110kB!
On
the other hand, for screen shots (having limited number of colors
normally)
the story reverses: a .png file has the size of 4.33kB while the
same file in .jpg format is 21.2kB.
So,
choosing file format in which to save graphics files is more important than
external compression
engines. Sometime, you will have to experiment to find
out.
HyperSnap screen saver has some editing features lets you save
information in various formats
but is not free.
IrfanView is a viewer with some graphics processing abilities (http://www.irfanview.com/)
lets you save files in different formats and is free.
Joseph
Biran
____________________________________________
Anyone aware of FREE compression software ...
want to compress some jpg images...
TIA
Ara
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