Running B2B paid media requires creative in the right dimensions for every platform. Here's the complete 2026 spec guide.

Ad Creative Size Guide: LinkedIn, Meta, and Google for B2B

Running B2B paid media across LinkedIn, Meta, and Google requires creative in precise specifications for each format. Wrong dimensions mean incorrect cropping, letterboxing, or outright rejection. This is the complete 2026 B2B spec guide.

LinkedIn Ad Specs (2026)

LinkedIn is the primary B2B paid channel. Required formats:

Single Image Ad

• Recommended: 1200 x 627px (landscape)
• Alt recommended: 1200 x 1200px (square — often performs better in feed)
• File: JPG or PNG
• Max file size: 5MB

Video Ad

• Dimensions: 1920 x 1080px (16:9) or 1200 x 1200px (1:1)
• Duration: 3 seconds to 30 minutes (15-30 seconds performs best for demand gen)
• File: MP4, MOV, or AVI
• Max file size: 200MB
• Recommended frame rate: 30fps

Carousel Ad (multiple images)

• Each card: 1080 x 1080px minimum
• 2-10 cards per carousel
• File: JPG or PNG, max 10MB per card

Document Ad (thought leadership)

• PDF upload, minimum 2 pages
• Cover image: 1200 x 628px
• Strong for gated content distribution

Conversation Ad (sponsored InMail)

• Banner image: 300 x 250px
• Logo: 100 x 100px PNG

Meta/Facebook Ad Specs (B2B on Meta)

Meta is secondary for most B2B but relevant for executive targeting through LinkedIn-synced audiences or lookalikes.

Feed Image Ad

• Recommended: 1200 x 628px (landscape) or 1080 x 1080px (square)
• File: JPG or PNG, max 30MB
• Text overlay: minimal (heavy text reduces reach in most auction environments)

Feed Video Ad

• Aspect ratio: 16:9, 1:1, or 4:5 (4:5 gets more screen real estate in feed)
• Duration: 5 seconds to 15 minutes (under 30 seconds for awareness/conversion)
• File: MP4 or MOV
• Resolution: minimum 1080px height

Story Ad

• Dimensions: 1080 x 1920px (9:16)
• Keep CTA and key message in the center 70% of the frame (avoid top and bottom safe zones)

Reel Ad

• 9:16 vertical, minimum 1080 x 1920px
• Duration: 15-30 seconds optimal

Google Display and Demand Gen Specs

Standard Display Sizes (must produce all)

• 728 x 90px (leaderboard)
• 300 x 250px (medium rectangle — highest inventory)
• 160 x 600px (wide skyscraper)
• 300 x 600px (half page)
• 320 x 50px (mobile banner)
• 320 x 100px (large mobile banner)

Responsive Display Ad

• Headlines: up to 30 characters each
• Descriptions: up to 90 characters each
• Logos: 1200 x 1200px (1:1) and 1200 x 300px (4:1)
• Images: 1200 x 628px (1.91:1) — primary format
• Square images: 1200 x 1200px (1:1)

Demand Gen (YouTube and Discover)

• Horizontal: 1920 x 1080px (16:9)
• Square: 1080 x 1080px
• For YouTube pre-roll: 15-30 second non-skippable or 15-30 second skippable (after 5 seconds)

The Production Checklist

For every new ad creative brief, specify:

1. All required platforms and formats (not just the primary format — missing sizes delay campaigns)

2. Whether motion is required (and if so, whether audio should be off-safe)

3. Any text overlay content (to stay within legibility constraints)

4. Brand assets required (logo file with transparent background, fonts, approved color codes)

At Sako, ad creative briefs that include these specs produce the required format set in the 48h window. Incomplete spec briefs require a clarification pass that extends the cycle.

Start shipping on-spec ad creative →. See how to brief creative effectively →.