Hi Bill,
Definitely a good idea to do such conversions. Transforming a 24-bits-color picture from .bmp to .jpg can easily reduce the filesize to 1 percent of the original. For photographs the .jpg format is excellent, for technical drawings GIF-files are often more precise. The newer PNG-format (also availabe in Infranview) provides best of both worlds.
The reason that bmp's are so large is that every pixel needs the same amount of storage-space (i.e. 24 bits per pixel), where the GIF-format compresses the data by looking for horizontal lines and rectangular blocks that "describe" the picture. With GIF-files you loose colors if more than 256 colors were used in the original file. With JPG-files you keep the colors, but loose some accuracy (although you can set a "quality level").
Kind regards,
Daan Terstegge
SMT Centre
Thales Communications
Unclassified mail
Personal Website: http://www.smtinfo.net
>>> "Kasprzak, Bill (sys) USX" <[log in to unmask]> 10/04 12:30 pm >>>
I downloaded the irfanview software and find it amazing.
My questions are, "If you load a .tif file and it's 70K in size and then
re-save as a.jpg and it's 7K in size, what exactly is lost?" (Besides the
63K) "Is there a loss of resolution, or what?" If this kind of space can be
saved, is it a good idea to convert all larger file formats, .bmp, .tif,
.gif, etc to .jpg to smaller file formats like .jpg?
Just curious about what is happening. I'm one of those who takes for granted
the operation of a desktop PC.
Bill Kasprzak
Moog Inc., Electronic Assembly Engineering
> -----Original Message-----
> From: Alain Savard [SMTP:[log in to unmask]]
> Sent: Wednesday, October 03, 2001 2:50 PM
> To: [log in to unmask]
> Subject: Re: [TN] Question for the software "gurus" out there
>
> For Irfanview you have to register the copy at a very moderate fee for
> corporate use. I use it at home all the time!
>
> Alain Savard
>
> -----Original Message-----
> From: Phil Nutting [mailto:[log in to unmask]]
> Sent: October 3, 2001 2:36 PM
> To: [log in to unmask]
> Subject: Re: [TN] Question for the software "gurus" out there
>
>
> I second the motion!
>
> Phil Nutting
>
> -----Original Message-----
> From: Gary Koven [mailto:[log in to unmask]]
> Sent: Wednesday, October 03, 2001 2:01 PM
> To: [log in to unmask]
> Subject: Re: [TN] Question for the software "gurus" out there
>
>
> IrfanView32, http://www.irfanview.com, is the best freeware image viewer
> and converter out there as far as I am concerned.
>
> Gary Koven
> Engineering Services Manager
> Convacent Corporation
> 1043 E Morehead St, Suite 201
> Charlotte, NC 28204
> 704.376.9300 phone
> 704.376.0988 fax
> [log in to unmask]
> www.convacent.com
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Jason Gregory
> Sent: Wednesday, October 03, 2001 1:34 PM
> To: [log in to unmask]
> Subject: [TN] Question for the software "gurus" out there
>
>
> Hello all,
> Does any of the software types know of a good .tif to .jpg converter? I
> need to convert my Agilent 5DX-generated .tif images (which happen to be
> around 600-700kb) to .jpg's (which are around 50-70kb). I am looking for
> any free downloads. Any help will be greatly appreciated.
>
>
> Jason Gregory
> Software Specialist - NPI Group
> SCI Systems/Plant 2
> 13000 S. Memorial Pkwy.
> Huntsville, AL. 35803
> (256) 882-4107 x3728
> [log in to unmask]
>
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