Generally, posting images on Usenet is frowned on except in newsgroups specifically intended for that purpose. A picture may be worth a thousand words, but it takes up about as many bytes as ten thousand.
In those binary newsgroups which do welcome images, the usual approach is to encode the image file in base-64 (websearch will find tools for this) and to post the resulting text characters. Other folks will use similar tools (sometimes, but not always, provided by their newsgroup readers) to convert that text back to a binary file.
To make it very vaguely on topic: This is also the best approach if you really need to imbed an arbitrary image directly into an XML file. And has the same limitation: the tool used to read that file has to understand that this is what you intended and how to convert it back. Generally that's a Bad Idea unless you're dealing with digital signatures; more commonly, you'd just use a URI to point to a copy of the image available for download somewhere.
Which is also, arguably, a better approach than posting images into a newsgroup.
> I have no idea where to post this. Perhaps one of you folks out there
> can help.
> I am trying to figure out the technique used to post images in Google
> Usenet Groups.
You can't. Usenet is text-only. There are some special-purpose groups with "binaries" in their name where you can post Base64-encoded chunks for readers to reconstruct, but there is no method for attachments as their is with email.
Incidentally, they are Usenet newsgroups. Nothing to do with Google except that Google provides an archive, and an interface for reading an posting, and is trying hard to elide the distinction between its own "groups" and Usenet...for some reason I can't fathom.
>> I have no idea where to post this. Perhaps one of you folks out there
>> can help.
>> I am trying to figure out the technique used to post images in Google
>> Usenet Groups.
> You can't. Usenet is text-only. There are some special-purpose groups
> with "binaries" in their name where you can post Base64-encoded chunks
> for readers to reconstruct, but there is no method for attachments as
> their is with email.
This isn't really true. NNTP attachments[1] are handled in almost
exactly the same way as Mail[2] (I dare say there are still Microsoft
alternatives).
There's nothing to prevent you trying to post a message with attachments
to a Usenet group; however, there are news gateways (such as the one I
use, eternal-september.org) which discard articles with binary content,
both from upstream and downstream, so I can neither see nor post
articles with binary attachments (though text attachments are OK; I'll
try to attach one to this article as a demo).
