Pixel fallback
Records a conversion from typed query parameters for image pixels and
server-to-server postbacks that can’t run JS, authenticating with ?wk=
or the X-Write-Key header. With format=img it returns a 1x1 GIF and
sets the anonymous-id cookie; otherwise it returns a JSON CollectorResponse.
Query parameters
event
wk
format
Allowed values:
eid
aid
uid
ts
value
currency
fbclid
fbp
fbc
gclid
gbraid
wbraid
ttclid
ttp
li_fat_id
msclkid
epik
rdt_cid
sc_click_id
twclid
Response
Conversion recorded. Returns a 1x1 transparent GIF when format=img; otherwise a JSON CollectorResponse.
ok
event_id
duplicate
Errors
401
Unauthorized Error
422
Unprocessable Entity Error