AdRoll legacy browser pixels preserve their conversion value format.

The pinned legacy roundtrip.js runtime emits /pixel/advertiser/pixel requests. This pack checks path identities and populated conversion metadata.

Producer findings remain advisory. Legacy USC cent amounts and escaped Unicode custom data remain valid. Advertiser-specific v2 bundles are outside this profile.

What this pack matches

Hosts: d.adroll.com
Paths: Full path expression: /pixel/[^/]*/[^/]*
Vendor docs: s.adroll.com/j/roundtrip.js

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
`advertiser_id`	recommended	The legacy SDK supplies this path identity without a published fixed length. Presence diagnostic severity: warning.	`vendor.adroll-pixel.param.advertiser_id.missing` `vendor.adroll-pixel.param.advertiser_id.empty` `vendor.adroll-pixel.param.advertiser_id.invalid`	docs
`pixel_id`	recommended	The legacy SDK supplies this path identity without a published fixed length. Presence diagnostic severity: warning.	`vendor.adroll-pixel.param.pixel_id.missing` `vendor.adroll-pixel.param.pixel_id.empty` `vendor.adroll-pixel.param.pixel_id.invalid`	docs
`conv_value`	optional	The SDK emits a numeric conversion amount when configured. Dollar convenience values are converted to integer cents. Presence diagnostic severity: warning.	`vendor.adroll-pixel.param.conv_value.empty` `vendor.adroll-pixel.param.conv_value.invalid`	docs
`adroll_currency`	optional	The SDK passes the configured currency or emits legacy USC for its dollar convenience input. USC remains accepted. Presence diagnostic severity: warning.	`vendor.adroll-pixel.param.adroll_currency.empty` `vendor.adroll-pixel.param.adroll_currency.invalid`	docs
`arrfrr`	optional	The SDK sends the current absolute page URL after redacting selected sensitive query values. Presence diagnostic severity: warning.	`vendor.adroll-pixel.param.arrfrr.empty` `vendor.adroll-pixel.param.arrfrr.invalid`	docs
`pv`	optional	The producer generates a numeric page-view value, which can be fractional. Presence diagnostic severity: warning.	`vendor.adroll-pixel.param.pv.empty` `vendor.adroll-pixel.param.pv.invalid`	docs
`no-cookies`	optional	The producer uses 1 when cookies are unavailable. Presence diagnostic severity: warning.	`vendor.adroll-pixel.param.no-cookies.empty` `vendor.adroll-pixel.param.no-cookies.invalid`	docs
`adroll_external_data`	optional	Custom data uses legacy JavaScript escape, including percent-u Unicode and Latin-1 bytes. It remains opaque rather than being misread as UTF-8 form data.		docs
`name`	optional	Audience segments remain open.		docs
`adroll_version`	optional	The source identifies its legacy runtime version.		docs
`cookie`	optional	An empty cookie string is a valid initial request.		docs
`method`	recommended	The pinned producer uses these transport methods. Complete HTTP capture contract. Presence diagnostic severity: warning.	`vendor.adroll-pixel.http.method.missing` `vendor.adroll-pixel.http.method.empty` `vendor.adroll-pixel.http.method.invalid`	docs

Validate a payload

pixellint validate url "$ARTIFACT" --rulepack vendor/adroll-pixel

Try this failing payload in the playground. An AdRoll browser pixel with nonnumeric conversion value.

https://d.adroll.com/pixel/ADV/PIX?conv_value=free

cargo install pixellint · npm install pixellint