<s>
The	O
HTTP	B-Protocol
Archive	I-Protocol
format	I-Protocol
,	O
or	O
HAR	B-Protocol
,	O
is	O
a	O
JSON-formatted	O
archive	B-Application
file	I-Application
format	O
for	O
logging	O
of	O
a	O
web	B-Application
browser	I-Application
's	O
interaction	O
with	O
a	O
site	O
.	O
</s>
<s>
The	O
common	O
extension	O
for	O
these	O
files	O
is	O
.har	B-Protocol
.	O
</s>
<s>
The	O
specification	O
for	O
the	O
HTTP	B-Protocol
Archive	I-Protocol
(	O
HAR	B-Protocol
)	O
format	O
defines	O
an	O
archival	O
format	O
for	O
HTTP	O
transactions	O
that	O
can	O
be	O
used	O
by	O
a	O
web	B-Application
browser	I-Application
to	O
export	O
detailed	O
performance	O
data	O
about	O
web	O
pages	O
it	O
loads	O
.	O
</s>
<s>
The	O
HAR	B-Protocol
format	I-Protocol
is	O
supported	O
by	O
various	O
software	O
,	O
including	O
:	O
</s>
