There are really only two remaining eBook formats, of the numerous types that were floating around some years ago.

MOBI:  The first and foremost, in terms of commercial sales, are the Kindle format(s) for Amazon.  Those are :mobi, KPF and (for previewing only) .azk files.   (updated 1-28-2021)  Colloquially, these are called "mobi" by most people in the business.

ePUB is used by Apple, Adobe Digital Editions, Nook, Google Editions, Diesel, Kobo, and most Droid-based readers is ePUB.  ePUB allows greater design flexibility than mobi, because it uses a more advanced level of HTML.

Two other formats, Palm and .LIT, (which was Microsoft's attempt to gain entry into the eBook marketplace), are not supported any longer in any significant numbers, and so we do not normally include conversion to those formats as part of our conversion quotes. Palm used a lot of formats that appear as PRC or PDB files on regular computers.

Don't be fooled by those companies offering "conversion to all 6 formats!" or that type of talk. In today's marketplace, you need two formats, and two only. That's MOBI and ePUB.  The first one covers Amazon.  The second covers literally every ebook retailer still standing, in 2021.  Companies offering that type of "too many format" options are likely auto-converting their ebooks with a free program that you can download yourself on the Internet.  The "all those formats" approach should warn you OFF using any formatter that promotes this!

T'was the Night Before Christmas... 

 (With apologies to Clement Clarke Moore, may he forgive my doggerel...)

...and all through the shop,
all we minions were working,
   until ready to drop.

The ebooks were flying,
the covers were spare,
The edits were crazy,
   with "one more thing I must share!"

We waited for Santa,
'Cuz we love old Saint Nick,
But Hitch made us work,
   Waving 'round an old stick!

So slave we all did,
And made all your books,
So that Hitch would say now,
   that we're off the hook.

Come today we're off,
to rest up our fingers,
Our hats we will doff,
   No books they do linger.

But we'll all be back,
Don't give it a thought,
for like all wage slaves,
   we're easily bought.

We'll be back on the fifth,
all eager and fresh,
All ready for you,
   after a well-deserved rest.

So Hitch wants to say,
very strongly and loud,
THANKS ALL YOU GUYS,
  you're the best type of crowd.

Indy and Len and Hitch and the gang,
will be back on the 5th,
to do books with a BANG!

In the meantime don't worry,
if you're in a hurry,
'cuz some poor guy got stuck
   sitting here like a duck.

Your emails we'll receive,
so no need to grieve.
We'll be a bit slow,
but we're raring to go.

Your books will be worked on,
your edits still made,
we're just resting a bit,
   before we all fade.

So please excuse the delays;
It won't be for days;
we'll jump on your queries,
   for your wondrous new series.

We waited for Santa,
'Cuz we love old St. Nick,
And sure 'nuff he came,
   It wasn't a trick.

And as he rode off,
into the night,
I could swear I heard Hitch yell,
   "That Edit's Not Right!"

~~~~~~~~~~

We'll be back on the morning of January 5th; we'll be here parttime between now and then, thanks.