Re: How do I batch change photo DPI settings

"Mark W." <mark@[EMAIL PROTECTED]
> wrote in message 
news:6IVGj.7601$Yy2.2128@[EMAIL PROTECTED]
> "Paul Furman" <paul-@[EMAIL PROTECTED]
> wrote in message 
> news:%GtGj.24717$Ch6.16324@[EMAIL PROTECTED]
>> Mark W. wrote:
>>> My dumb OCR software will refuse to OCR an image if it's lower than a
96 
>>> dpi setting in it's properties.
>>> It doesn't care that the pixel dimentions are much higher than some 
>>> other much smaller pixel dimention
>>> file if it's properties say it's dpi is under 96 dpi.
>>>
>>> So, how can I batch change many image files (usually JPEG's) to a 
>>> particular dpi property setting?
>>>
>>> I'm using Omipage Pro 14 to do the OCR.
>>
>> Irfanview
>
> Thanks!
> Irfanview sounded familiar. Turns out I already had it installed. It
only
> took a few minutes to figure out how to batch reset the DPI's in my
files.
> Funny that it always compresses the files to about only 27% of the 
> original
> size.
>
> I would prefer that it left the file quality alone.
>
> I'm only resetting the DPI numbers. I experimented with resetting to 3
> different DPI's: from the original 72 DPI, to 96, 300, and 600. The
> resulting new files are all exactly the same NEW size regardless of
which 
> of
> those 3 DPI's I reset the files to.
>
> Am I just unaware that I chose some compression unintentionally?
>
> Couldn't find anything about compression or image quality/resolution in 
> the
> help file.
>
>

Under the "options" button (right of the format pull down menu, but before

"set advanced options")  Unfortunately it is a slider bar 0-100 so you
have 
to know what your compression is beforehand...

Jim