Master Ad Specs

Creative specifications for every ad format supported on Blockboard — display, audio, site-served video, and VAST-served video.

Use the specs below when preparing creative for a Blockboard campaign. Assets that do not meet these requirements may be rejected at upload.

Display

RequirementSpec
File format.jpg, .png, .gif
File size100 MB max

Supported dimensions

PlacementDimensions (W x H)
Wide Skyscraper160 x 600
Square250 x 250
Mobile Leaderboard300 x 50
Mobile Leaderboard 1320 x 50
Medium Rectangle300 x 250
Half Page300 x 600
Portrait300 x 1550
Large Mobile Banner320 x 100
Large Rectangle336 x 280
Full Banner468 x 60
Leaderboard728 x 90
Billboard970 x 250

Audio

RequirementSpec
File format.MP3
Bitrate320 kbps or higher

Video - Site Served

RequirementSpec
File format.MP4 (h.264 codec)
AudioAAC codec, 192 kbps, 48Hz, stereo
Frame rate29.97 (native)
Duration:06, :15, or :30
DimensionsHD (1920 x 1080)
File size100 MB (required)
ImportantThird-party 1x1 impression pixels and click tags / landing page URLs are required for site-served video.

Video - VAST Served

RequirementSpec
StandardIAB VAST 2.0 or 3.0 (HTTPS / SSL)
File formatMP4 (h.264 codec)
AudioAAC codec, 192 kbps, 48Hz, stereo
Frame rate29.97 (native)
Duration:06, :15, or :30

Required renditions

Each VAST tag requires all three of the following versions:

ResolutionBitrate
1920 x 10803000 - 4000 kbps
1280 x 7201500 - 2500 kbps
640 x 360400 - 750 kbps

Need more help?

Our team is here to assist with any questions.

help@myblockboard.com
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