vendor/linkedin · ecosystem evidence

LinkedIn image pixels need a Partner ID

Campaign Manager generates this pixel. LinkedIn documents the workflow rather than the query parameters, so the pack is ecosystem evidence, scoped to what the UI emits: pid, conversionId, and fmt.

What this pack matches

Hosts: px.ads.linkedin.com
Paths: /collect
Vendor docs: www.linkedin.com/help/lms/answer/a422796

Rules

Codes are stable. A finding in CI, MCP, or the playground lands on the same id.

Field	Required	What it checks	Rule ids	Source
`pid`	required	It is the numeric Partner ID of the Insight Tag. LinkedIn generates this pixel in Campaign Manager rather than publishing the parameter contract, so this rule is ecosystem evidence, not a published contract. Fix: Copy the image pixel from the conversion's Sources page so `pid` carries the Partner ID.	`vendor.linkedin.param.pid.missing` `vendor.linkedin.param.pid.empty` `vendor.linkedin.param.pid.invalid`	docs
`conversionId`	recommended	Without it the fire is attributed to the Insight Tag rather than to a specific conversion. Fix: Add the numeric conversion ID from Campaign Manager.	`vendor.linkedin.param.conversionId.missing` `vendor.linkedin.param.conversionId.empty` `vendor.linkedin.param.conversionId.invalid`	docs
`fmt`	recommended	Image pixels are generated with `fmt=gif`.	`vendor.linkedin.param.fmt.missing` `vendor.linkedin.param.fmt.empty` `vendor.linkedin.param.fmt.invalid`	docs

Validate a payload

pixellint validate url "$ARTIFACT" --rulepack vendor/linkedin

Or paste it into the playground. Same engine, in the browser, nothing sent anywhere.

cargo install pixellint · npm install pixellint