[Coco] [Color Computer] Re: Rainbow magazines wanted for scanning

[Arthur Flexser]

Are you sure you mean 10-25 TIMES smaller than PDF, and not 10-25 PERCENT
smaller?  I looked at the Wikipedia article, and it cites an external
link ("DjVu vs. PDF comparison") where DjVu came out 25% better than
PDF.  Wikipedia itself simply says, "it gives smaller files than PDF
for most scanned documents," which seems like a very weak statement if
DjVu is really typically 10 to 25 TIMES better in compression.

Art

On 5/16/09, jasonb1963 <jasonb1963 at yahoo.com> wrote:
> --- In ColorComputer at yahoogroups.com, "stinger30au" <stinger30au at ...> wrote:
>  >
>  > we need these issues Jul-Dec of 82, and Jan-May of 83.
>  >
>  > If anyone has them and does not feel up to the task of scanning them ,please email me off list & i can help out
>  >
>  >
>  > this is all we have let to finish off the collection of Rainbows
>  >
>
>  Just wanted to compliment you on all the effort you've put into scanning and uploading Coco magazines.
>
>  I noticed you are uploading the files in PDF format.  This is great for people who want to reproduce the magazines on paper, but it is very inefficient if you just want to be able to view them on your screen.  For that case, the DJVU format (http://en.wikipedia.org/wiki/Djvu) results in files which are 10-25x smaller and look just as good on the screen as PDF documents.  Given the bandwidth limits the excalibur server is subject to, it might be worthwhile to consider making them available in this format in lieu of or in addition to the PDF format.
>
>  If no one else is interested, I'll convert some of them myself and upload them to excalibur, but certainly it would be more efficient if you did this as you already have all of the files yourself.  There are lots of tools for converting DJVU to PDF, but only a few for going the other way.  One is available from http://www.trustfm.net/GeneralTools/SoftwarePdfToDjvuGUI.php?b2=1.
>
>  --
>  Jason
>
>
>
>
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