<s>
Sketchfab	B-Application
is	O
a	O
3D	O
modeling	O
platform	O
website	O
to	O
publish	O
,	O
share	O
,	O
discover	O
,	O
buy	O
and	O
sell	O
3D	O
,	O
VR	B-Application
and	O
AR	B-General_Concept
content	O
.	O
</s>
<s>
It	O
provides	O
a	O
viewer	O
based	O
on	O
the	O
WebGL	B-Library
and	O
WebXR	B-General_Concept
technologies	O
that	O
allows	O
users	O
to	O
display	O
3D	O
models	O
on	O
the	O
web	O
,	O
to	O
be	O
viewed	O
on	O
any	O
mobile	B-Application
browser	I-Application
,	O
desktop	B-Application
browser	I-Application
or	O
Virtual	B-Device
Reality	I-Device
headset	I-Device
.	O
</s>
<s>
Sketchfab	B-Application
took	O
part	O
in	O
the	O
Spring	O
2013	O
TechStars	O
New	O
York	O
City	O
startup	O
accelerator	O
program	O
,	O
raised	O
$2	O
million	O
in	O
December	O
2013	O
and	O
$7	O
million	O
in	O
June	O
2015	O
.	O
</s>
<s>
On	O
July	O
21	O
,	O
2021	O
,	O
Epic	O
Games	O
acquired	O
Sketchfab	B-Application
.	O
</s>
<s>
The	O
main	O
product	O
of	O
Sketchfab	B-Application
is	O
a	O
3D	O
,	O
Virtual	B-Application
reality	I-Application
(	O
VR	B-Application
)	O
and	O
Augmented	B-General_Concept
reality	I-General_Concept
(	O
AR	B-General_Concept
)	O
model	O
viewer	O
.	O
</s>
<s>
It	O
enables	O
users	O
to	O
move	O
freely	O
around	O
or	O
inside	O
the	O
3D	O
scene	O
using	O
mouse	O
,	O
touch	O
manipulation	O
,	O
VR	B-Application
or	O
AR	B-General_Concept
.	O
</s>
<s>
Viewers	O
can	O
enable	O
the	O
VR	B-Application
mode	O
to	O
see	O
the	O
model	O
in	O
Virtual	B-Device
Reality	I-Device
headsets	I-Device
or	O
the	O
AR	B-General_Concept
mode	O
to	O
insert	O
the	O
model	O
within	O
the	O
real	O
world	O
via	O
a	O
mobile	O
device	O
.	O
</s>
<s>
The	O
3D	O
viewer	O
is	O
used	O
on	O
the	O
Sketchfab	B-Application
website	O
and	O
mobile	B-Application
apps	I-Application
,	O
but	O
can	O
also	O
be	O
embedded	O
on	O
external	O
websites	O
,	O
notably	O
on	O
Facebook	B-Application
,	O
Twitter	B-Application
or	O
Wordpress	B-Protocol
.	O
</s>
<s>
Sketchfab	B-Application
provides	O
online	O
and	O
mobile	O
community	O
portals	O
,	O
where	O
visitors	O
can	O
browse	O
,	O
rate	O
,	O
download	O
or	O
buy	O
user	O
generated	O
3D	O
models	O
.	O
</s>
<s>
Users	O
of	O
Sketchfab	B-Application
have	O
profile	O
pages	O
,	O
premium	O
users	O
can	O
customize	O
and	O
share	O
their	O
models	O
privately	O
.	O
</s>
<s>
Sketchfab	B-Application
users	O
can	O
choose	O
to	O
make	O
their	O
3D	O
model	O
files	O
available	O
for	O
download	O
under	O
Creative	O
Commons	O
licenses	O
or	O
to	O
sell	O
them	O
in	O
the	O
Sketchfab	B-Application
store	O
.	O
</s>
<s>
With	O
content	O
available	O
for	O
sale	O
or	O
download	O
,	O
Sketchfab	B-Application
is	O
positioned	O
as	O
a	O
3D	O
model	O
marketplace	O
and	O
as	O
a	O
3D	O
printing	O
marketplace	O
since	O
some	O
models	O
are	O
compatible	O
with	O
3D	O
printing	O
.	O
</s>
<s>
Sketchfab	B-Application
offers	O
to	O
paying	O
enterprise	O
customers	O
a	O
dedicated	O
platform	O
to	O
share	O
,	O
manage	O
and	O
collaborate	O
on	O
3D	O
assets	O
.	O
</s>
<s>
A	O
selection	O
of	O
Sketchfab	B-Application
models	O
are	O
available	O
within	O
a	O
native	O
application	O
for	O
the	O
following	O
VR	B-Device
headsets	I-Device
:	O
Google	B-Device
Cardboard	I-Device
,	O
Samsung	B-Device
Gear	I-Device
VR	I-Device
,	O
HTC	O
Vive	O
and	O
Oculus	B-Device
Rift	I-Device
.	O
</s>
<s>
The	O
mobile	B-Application
application	I-Application
can	O
be	O
used	O
to	O
view	O
the	O
3D	O
models	O
in	O
Augmented	B-General_Concept
Reality	I-General_Concept
leveraging	O
the	O
ARKit	O
APIs	B-Application
on	O
iOS	B-Application
and	O
ARCore	O
on	O
Android	B-Application
.	O
</s>
<s>
3D	O
models	O
can	O
be	O
uploaded	O
to	O
Sketchfab	B-Application
from	O
its	O
website	O
or	O
directly	O
from	O
various	O
3D	O
software	O
,	O
using	O
plugins	B-Application
(	O
for	O
example	O
for	O
3ds	B-Language
Max	I-Language
or	O
SketchUp	B-Application
)	O
or	O
natively	O
(	O
from	O
Blender	B-Application
or	O
Adobe	B-Operating_System
Photoshop	I-Operating_System
)	O
.	O
</s>
<s>
Sketchfab	B-Application
offers	O
an	O
API	B-Application
allowing	O
developers	O
to	O
integrate	O
functionality	O
for	O
searching	O
and	O
downloading	O
Sketchfab	B-Application
's	O
Creative	O
Commons	O
licensed	O
3D	O
models	O
into	O
their	O
applications	O
.	O
</s>
<s>
Sketchfab	B-Application
relies	O
on	O
the	O
WebGL	B-Library
JavaScript	O
API	B-Application
to	O
display	O
3D	O
on	O
web	O
pages	O
in	O
all	O
major	O
modern	O
web	B-Application
browsers	I-Application
.	O
</s>
<s>
It	O
does	O
not	O
rely	O
on	O
third-party	O
plugins	B-Application
.	O
</s>
<s>
Sketchfab	B-Application
implements	O
the	O
WebVR	O
JavaScript	O
API	B-Application
to	O
provide	O
a	O
Virtual	B-Application
Reality	I-Application
mode	O
of	O
its	O
viewer	O
on	O
compatible	O
VR	B-Device
headsets	I-Device
.	O
</s>
<s>
The	O
3D	O
viewer	O
uses	O
the	O
open-source	O
OSG.JS	B-Library
JavaScript	O
library	O
,	O
a	O
library	O
created	O
and	O
largely	O
maintained	O
by	O
Sketchfab	B-Application
employees	O
.	O
</s>
<s>
Rendering	O
is	O
achieved	O
using	O
classic	O
real-time	B-General_Concept
rendering	I-General_Concept
or	O
physically	O
based	O
rendering	O
.	O
</s>
<s>
Sketchfab	B-Application
was	O
initially	O
created	O
by	O
entrepreneur	O
and	O
3D	O
developer	O
Cédric	O
Pinson	O
under	O
the	O
domain	O
name	O
ShowWebGL	O
in	O
early	O
2011	O
.	O
</s>
<s>
He	O
was	O
joined	O
in	O
early	O
2012	O
by	O
Alban	O
Denoyel	O
,	O
and	O
they	O
relaunched	O
the	O
site	O
under	O
the	O
name	O
Sketchfab	B-Application
in	O
March	O
2012	O
.	O
</s>
<s>
The	O
year	O
after	O
,	O
Sketchfab	B-Application
was	O
selected	O
in	O
the	O
Spring	O
2013	O
TechStars	O
class	O
in	O
New	O
York	O
City	O
.	O
</s>
<s>
In	O
February	O
2013	O
,	O
Sketchfab	B-Application
raised	O
an	O
angel	O
round	O
of	O
370,000	O
euros	O
.	O
</s>
<s>
Less	O
than	O
one	O
year	O
after	O
,	O
in	O
December	O
2013	O
,	O
Sketchfab	B-Application
raised	O
$2	O
million	O
from	O
Balderton	O
Capital	O
with	O
Partech	O
Ventures	O
,	O
Borealis	O
Ventures	O
,	O
David	O
Cohen	O
and	O
existing	O
angel	O
investors	O
also	O
participated	O
in	O
the	O
funding	O
.	O
</s>
<s>
In	O
June	O
2015	O
,	O
Sketchfab	B-Application
raised	O
a	O
$7	O
million	O
Series	O
A	O
led	O
by	O
FirstMark	O
Capital	O
.	O
</s>
<s>
In	O
December	O
2018	O
,	O
Brendan	O
Iribe	O
,	O
the	O
original	O
CEO	O
and	O
co-founder	O
of	O
Oculus	B-Application
invested	O
in	O
Sketchfab	B-Application
.	O
</s>
