From: Michael Neumann <mneumann@...>
Date: 2004-04-28T06:05:11+09:00
Subject: Re: Modifying metadata in an image file ...

On Wed, Apr 28, 2004 at 04:39:04AM +0900, Useko Netsumi wrote:
> "Michael Neumann" <mneumann@ntecs.de> wrote in message
> news:20040427182717.GA1345@miya.intranet.ntecs.de...
> > On Wed, Apr 28, 2004 at 03:14:04AM +0900, Useko Netsumi wrote:
> > > Does anyone aware of any program/apps/scripts that has the ability to
> > > modify/add/create/delete metadata in any image type such as JPEG, GIF,
> PNG,
> > > etc.
> >
> > For PNG this would be quite simple as it supports text chunks with
> > keywords. Coincidentally I wrote a simple PNG writer in pure Ruby a few
> > days ago :-)
> >
> > Regards,
> >
> >   Michael
> >
> >
> 
> That's great! Would you extend your script to include other format such as
> JPEG, GIF, etc? Thanks

No, sorry :-)

But it shouldn't be that hard to write a method whose only purpose is to
modify the text information. But I am not familiar with the JPEG and GIF
data format and don't have the time to investigate.

Maybe you just search for an already existing solution or write it
yourself. 

Regards,

  Michael