Reddit

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  • Social

Reddit Free-form Ad ad specs

Reddit Free-form Ad ads are 1:1 or 4:3 or 16:9 still images, up to 10 MB per file, delivered as JPG, PNG, or GIF. They run in the Feed and conversation placement on Reddit.

  • 1:1
  • 4:3
  • 16:9
  • 10 MB
Test a creative

Visual

Aspect ratios
1:1, 4:3, 16:9
Max file size
10 MB
File types
JPG, PNG, GIF

Copy limits

Body
40 000 chars
Caption
50 chars
Headline
300 chars

Notes & source

  • A rich-text post: headline plus body text, with up to 20 images and 5 videos
  • a click opens the post
  • Headline up to 300 characters (100 recommended, 80 if truncation is a concern)
  • Body up to 40,000 characters, with 3–6 lines shown in plain text in the feed
  • Caption up to 50 characters per image or video
  • Images: JPG, PNG or GIF, up to 10 MB, at least 1000 px wide recommended
  • 1:1 (1200×1200), 4:3 (1440×1080) or 16:9 (1920×1080) recommended, any ratio accepted
  • Videos: MP4 or MOV (no ProRes), up to 1 GB (50–100 MB recommended), up to 30 fps, 5–30 s recommended
  • Thumbnail: JPG or PNG, up to 3 MB
  • Ads Manager does not generate one
  • Without a thumbnail no media shows in feeds

Official source · checked not yet

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