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

eventstringRequired
wkstring or nullOptional
formatenum or nullOptional
Allowed values:
eidstring or nullOptional
aidstring or nullOptional
uidstring or nullOptional
tsdouble or nullOptional
valuedouble or nullOptional
currencystring or nullOptional
fbclidstring or nullOptional
fbpstring or nullOptional
fbcstring or nullOptional
gclidstring or nullOptional
gbraidstring or nullOptional
wbraidstring or nullOptional
ttclidstring or nullOptional
ttpstring or nullOptional
li_fat_idstring or nullOptional
msclkidstring or nullOptional
epikstring or nullOptional
rdt_cidstring or nullOptional
sc_click_idstring or nullOptional
twclidstring or nullOptional

Response

Conversion recorded. Returns a 1x1 transparent GIF when format=img; otherwise a JSON CollectorResponse.

okbooleanDefaults to true
event_idstring or null
duplicatebooleanDefaults to false

Errors

401
Unauthorized Error
422
Unprocessable Entity Error