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Reddit specifications

Find current Reddit specifications for profiles, posts, videos, carousels and ads. Compare dimensions, aspect ratios, file formats and source guidance.

9 specifications 7 official 2 recommended

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Showing 9 specifications

Profile Avatar

Recommended
Dimensions256×256
Aspect ratio1:1
FormatImage
File typeJPG, PNG
Status Recommended canvas
Reviewed
Source Reddit Help
NotesRecommended square avatar canvas. Reddit explains how to update an avatar image but does not publish an exact personal-avatar upload size.

Profile Banner

Recommended
Dimensions1280×384
Aspect ratio10:3
FormatImage
File typeJPG, PNG
Status Recommended canvas
Reviewed
Source Reddit Help
NotesRecommended personal-profile banner canvas. Reddit explains how to update a profile banner but does not publish this as a fixed requirement.

Subreddit Icon

Official
Dimensions300×300
Aspect ratio1:1
FormatImage
File typeJPG, PNG
Status Official specification
Reviewed
Source Official guide
NotesReddit’s current community-icon specification is 300×300px.

Subreddit Banner

Official
Dimensions1080×128
Aspect ratio135:16
FormatImage
File typeJPG, PNG
Status Official specification
Reviewed
Source Official guide
NotesReddit recommends 1080×128px for mobile community banners; desktop banners must be at least 1072×128px.

Image Ad

Official
PlacementFeed and Conversation
Dimensions1920×1080
Official listing1080×1080, 1080×1350, 1440×1080 or 1920×1080
Aspect ratio16:9
Supported ratios1:1 – 4:5 – 4:3 – 16:9
FormatImage
File typeJPG, PNG
File size3MB in detailed image guidance; overview pages also cite up to 20MB
Text Headline: Up to 300 characters Landing page URL: Up to 268 characters
Requirements
  • JPG, PNG or GIF; GIF renders as a still image
  • Conversation thumbnail: 400×300 JPEG/PNG under 500KB
Status Official specification
Reviewed
Source Official guide
NotesReddit official pages publish different image limits by workflow. This record preserves both the detailed 3MB guidance and the 20MB overview limit.

Video Ad

Official
PlacementFeed and Conversation
Dimensions1920×1080
Aspect ratio16:9
Supported ratios1:1 – 4:5 – 16:9
FormatVideo
File typeMP4, MOV
File sizeUp to 1GB
DurationUp to 15 minutes; 60 seconds or less recommended
Status Official specification
Reviewed
Source Official guide
NotesUse the highest-quality asset that meets the published requirements.

Free-form Ad

Official
PlacementFeed and Conversation
Dimensions1200×628
Aspect ratio1.91:1
Supported ratios1:1 – 4:5 – 16:9
FormatText + Image + Video
File typeMP4, MOV
Status Official specification
Reviewed
Source Official guide
NotesRich-text post with optional images, GIFs, video and inline links; media follows the underlying image or video requirements.

Conversation Ad Placement

Official
PlacementConversation Threads
Dimensions1200×628
Aspect ratio1.91:1
Supported ratios1:1 – 4:5 – 16:9
FormatText + Image + Video
File typeMP4, MOV
Status Official specification
Reviewed
Source Official guide
NotesConversation Ads are a placement, not a unique creative type; the underlying image, video or free-form specifications apply.