<s>
Bullzip	B-Language
PDF	I-Language
printer	I-Language
is	O
free-of-charge	B-License
virtual	B-Application
printer	I-Application
computer	O
software	O
that	O
allows	O
programs	O
running	O
under	O
Microsoft	B-Application
Windows	I-Application
operating	I-Application
systems	I-Application
to	O
create	O
Portable	B-Application
Document	I-Application
Format	I-Application
(	O
PDF	B-Application
)	O
files	O
by	O
selecting	O
to	O
"	O
print	O
"	O
to	O
the	O
Bullzip	B-Language
PDF	I-Language
printer	I-Language
instead	O
of	O
a	O
physical	O
printer	O
.	O
</s>
<s>
Version	O
12.x	O
of	O
the	O
software	O
was	O
approved	O
for	O
use	O
by	O
the	O
US	O
Department	O
of	O
Veterans	O
Affairs	O
,	O
with	O
AES	O
encryption	O
listed	O
as	O
a	O
benefit	O
,	O
subject	O
to	O
some	O
decision	O
constraints	O
such	O
as	O
keeping	O
up-to-date	O
,	O
and	O
banning	O
the	O
use	O
of	O
FTP	B-Protocol
,	O
unapproved	O
by	O
the	O
VA	O
.	O
</s>
<s>
The	O
Bullzip	B-Language
PDF	I-Language
Printer	I-Language
works	O
by	O
creating	O
a	O
virtual	B-Application
printer	I-Application
in	O
the	O
operating	O
systems	O
that	O
prints	O
to	O
PDF	B-Application
files	I-Application
instead	O
of	O
paper	O
.	O
</s>
<s>
This	O
practically	O
allows	O
any	O
application	O
to	O
create	O
PDF	B-Application
files	I-Application
from	O
the	O
print	O
menu	O
.	O
</s>
<s>
The	O
virtual	B-Application
printer	I-Application
employs	O
Ghostscript	B-Language
in	O
order	O
to	O
translate	O
the	O
document	O
into	O
the	O
Portable	B-Application
Document	I-Application
Format	I-Application
,	O
and	O
requires	O
Ghostscript	B-Language
9.0	O
or	O
later	O
.	O
</s>
<s>
A	O
review	O
in	O
2020	O
reported	O
that	O
the	O
virtual	B-Application
printer	I-Application
had	O
the	O
features	O
of	O
most	O
such	O
programs	O
,	O
with	O
additional	O
security	O
features	O
,	O
including	O
password-protecting	O
PDF	B-Application
files	I-Application
during	O
creation	O
with	O
128/40	O
encryption	O
,	O
and	O
watermarking	O
.	O
</s>
<s>
It	O
stated	O
that	O
PDF	B-Application
files	I-Application
created	O
were	O
not	O
searchable	O
,	O
tended	O
to	O
be	O
larger	O
than	O
produced	O
by	O
other	O
programs	O
,	O
and	O
that	O
conversion	O
was	O
rather	O
slow	O
.	O
</s>
<s>
It	O
is	O
not	O
limited	O
to	O
PDF	B-Application
,	O
also	O
producing	O
BMP	O
,	O
JPEG	O
,	O
PCX	O
,	O
PNG	O
,	O
and	O
TIFF	O
files	O
.	O
</s>
<s>
An	O
unusual	O
feature	O
is	O
the	O
ability	O
to	O
append	O
content	O
to	O
an	O
existing	O
PDF	B-Application
file	I-Application
.	O
</s>
<s>
Bullzip	O
also	O
publish	O
free	O
software	O
"	O
PDF	B-Application
Studio	O
"	O
which	O
can	O
view	O
PDFs	B-Application
and	O
merge	O
,	O
search	O
,	O
print	O
,	O
split	O
,	O
delete	O
,	O
and	O
move	O
pages	O
.	O
</s>
