Bid.w

Field facts

Path

seatbid.bid.w

Object

Bid

Type

integer

Requirement

Optional

Added

OpenRTB 2.2

Spec section

4.2.3

How it is used

Send it, with Bid.h, whenever the impression allowed more than one size, for example through Banner.format, so the exchange knows which size the creative fills.

Example

Where the field sits in a payload, with everything else left out:

{
  "seatbid": [
    {
      "bid": [
        {
          "w": 300
        }
      ]
    }
  ]
}

Common mistakes

• Returning a size the impression did not offer.

Version history

Added in OpenRTB 2.2, and present in the latest snapshot. The table shows how each version's spec text types the field.

Related fields

• Bid.h
• Banner.format
• Format.w

Other Bid fields

• adid
• adm
• adomain
• api
• apis
• attr
• bundle
• burl
• cat
• cattax
• cid
• crid
• dealid
• dur
• exp
• ext
• h
• hratio
• id
• impid
• iurl
• langb
• language
• lurl
• mtype
• nurl
• price
• protocol
• qagmediarating
• slotinpod
• tactic
• wratio

For a walkthrough of the whole object, read Bid response anatomy.