Documentation Analytics Implementation Guide

Data collection query parameters

Last update: June 19, 2026

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The following table lists all query string parameters Adobe uses in image requests. This information is useful when debugging with packet analyzers, when hardcoding image requests, or when using dynamic variables.

Parameter

Analytics implementation variable

Description

aamlh

None

Audience Manager location hint. Identifies the regional data center used for Audience Manager ID syncing through the Experience Cloud ID Service.

aamb

None

Audience Manager blob. Encoded Audience Manager profile data passed during ID syncing through the Experience Cloud ID Service.

aid

None

The legacy Analytics visitor ID, stored in the s_vi cookie. Superseded by the mid parameter in modern implementations.

AQB

None

Indicates the beginning of an image request query string.

AQE

None

Indicates the end of an image request, meaning that the request was not truncated.

bh

None

Browser height (in pixels). Used in the Browser height dimension.

bw

None

Browser width (in pixels). Used in the Browser width dimension.

c

None

Color quality (in bits). Used in the Color depth dimension.

c.

contextData

Indicates the start of context data variables. Never contains a value.

.c

contextData

Indicates the end of context data variables. Never contains a value.

c1 - c75

prop1 - prop75

Props, or custom traffic variables.

cc

currencyCode

The type of currency used in the hit.

cdp

cookieDomainPeriods

No longer used. The number of periods in a domain.

ce

charSet

The character encoding of the image request.

cl

cookieLifetime

The lifetime of the visitor cookie.

ch

channel

Used in the Site sections dimension.

cp

customerPerspective

Specifies whether a mobile app hit occurred while the app was in the foreground or background. Used in the Hit type dimension.

ct

None

Used in the Connection type dimension.

D

dynamicVariablePrefix

Denotes what to use for dynamic variables.

ev

events

Shorthand for the events parameter.

events

Comma-separated list of events on the page. Used by most metrics.

g

pageURL

The current URL of the page, up to 255 bytes. Used in the Page URL dimension.

-g

pageURL

URLs longer than 255 bytes are split. The first 255 bytes appear in the g parameter, and all remaining bytes appear in the -g parameter.

gn

pageName

Shorthand for the pageName parameter.

gt

pageType

Shorthand for the pageType parameter.

h.

collectHighEntropyUserAgentHints

Prefix for several variables that represent Client hints.

h1 - h5

hier1 - hier5

No longer used. Hierarchy dimensions.

hp

None

No longer used. In previous versions of Adobe Analytics, determined if the current URL was the browser’s homepage.

j

None

No longer used. The JavaScript version installed in the browser.

k

None

Used in the Cookie support dimension.

l1 - l3

list1 - list3

List variables.

lat

None

No longer used. Latitude. Set by legacy mobile SDK implementations; current mobile implementations send geolocation through datastreams.

lon

None

No longer used. Longitude. Set by legacy mobile SDK implementations; current mobile implementations send geolocation through datastreams.

lrt

None

The “last request timing,” which is the roundtrip time for the last request, in milliseconds. It is sent only when more than one request is sent from a single page, such as in a single-page application (SPA).

mcorgid

None

The Experience Cloud Organization ID, which identifies the organization to the Experience Cloud ID Service.

mid

None

Used in the Experience Cloud Visitor ID dimension.

ms_a

None

Set by the Media SDK to 1 when the tracked streaming media is audio rather than video.

ndh

None

Added by AppMeasurement to every image request it generates. Because hardcoded requests typically omit it, its presence indicates that the hit came from AppMeasurement.

ns

visitorNameSpace

No longer used. Helps determine where cookies are set.

oi

None

No longer used. Object instance for the last page. Used in previous versions of Activity Map.

oid

s_objectID

Object identifier for the last page. Used in the current version of Activity Map.

oidt

None

No longer used. Object identifier type for the last page. Used in previous versions of Activity Map.

ot

None

No longer used. Object name for the last page. Used in previous versions of Activity Map.

p

None

No longer used. List of plug-ins used in the browser.

pageName

Used in the Page dimension.

pageType

Used in the Pages not found dimension.

pccr

None

Persistent cookie check redirect flag. Set by Adobe data collection servers for new visitors, and always set to true. When a new visitor’s cookie support is unknown, the data collection server redirects the image request to itself with this flag to confirm the persistent cookie check already occurred. This parameter prevents infinite redirects if the visitor rejects cookies.

pe

tl()

Determines the type of hit. Valid values include lnk_o (Custom link), lnk_d (Download link), lnk_e (Exit link), and tnt (an Analytics for Target hit).

pev1

linkURL

The URL on which the custom link occurred.

pev2

tl()

The friendly name of the custom link.

pev3

None

No longer used. Tracked milestones in previous versions of video reporting.

pf

None

Platform flag; for Adobe use only. Do not alter.

pid

None

No longer used. Page identifier for last page. Used in previous versions of Activity Map.

pidt

None

No longer used. Page identifier type for last page. Used in previous versions of Activity Map.

pl

products

Shorthand for the products parameter.

products

Products variable. Used in the Product and Category dimensions.

purchaseID

Used in the Purchase ID dimension.

r

referrer

Referring URL of the hit. Used in traffic sources dimensions, such as Referrer and Referring domain.

s

None

Screen resolution, in width x height. Used in the Monitor resolutions dimension.

sdid

None

Supplemental Data ID. Links multiple hits that describe the same event, such as Analytics and Target hits in an Analytics for Target integration.

server

Used in the Server dimension.

sv

server

Shorthand for the server parameter.

state

No longer used. Captured the U.S. state a visitor entered, typically through a shipping or billing form.

t

None

Generated date/time of the hit. Uses the format dd/mm/yyyy hh:mm:ss w o.
- dd/mm/yyyy hh:mm:ss is date/time in JavaScript. Month 0 is January, while month 11 is December.
- w is the day of the week. 0 is Sunday, while 6 is Saturday.
- o is the negative GMT offset in minutes. For example, 420 is GMT-7.

tnt

None

Target data payload used in Analytics for Target integrations. Sent when pe=tnt.

ts

timestamp

The custom timestamp set with the hit. Typically used for offline tracking.

u

None

No longer used. Account marker used in previous versions of Activity Map.

v

None

Used in the Java enabled dimension.

v0

campaign

Used in the Tracking code dimension.

v1 - v250

evar1 - eVar250

eVars, or custom conversion dimensions.

vid

visitorID

Visitor ID override variable.

vidn

None

Set by Adobe data collection servers for new visitors, accompanying the pccr parameter in the redirected image request. Contains the visitor ID value stored in the visitor cookie.

vmf

visitorMigrationServer

No longer used. Visitor migration server used during the migration from third-party to first-party cookies.

vmt

visitorMigrationKey

No longer used. Visitor migration key, which helped migrate implementations from third-party to first-party cookies.

vvp

None

No longer used. Variable provider used in Data Connectors.

xact

transactionID

Used with Data Sources to tie online and offline data together.