Frequently asked questions
Reddit Ad Specs
People go to Reddit for information, which has made it the number one platform for product conversations. Reddit communities cover endless topics, offering wide-ranging advertising opportunities.
Why should you advertise on Reddit?
Reddit gives you access to real, engaged communities (subreddits) rather than just broad audiences. According to Reddit, over half a billion users are active on the platform each month.
Ads on Reddit behave like posts, meaning users can comment, upvote/downvote, and treat them like part of their feed. That means your creative and message need to feel more native.
What are the main ad formats on Reddit?
Image Ads: Static image with text headline/link.
Video Ads: For catching attention, especially if you have something dynamic or product demo-like.
Carousel Ads: Multiple images or videos in one swipeable ad so you can tell more of a story or show multiple products.
Free-Form Ads: Longer text plus images/GIFs/videos, more like a deep post than a typical ad. Good for when you want to explain or engage.
Conversation Placements: These show up in comment threads/discussions. More niche but very Reddit-native.
What are Reddit's ad specs?
| Category | Image | Video | Carousel | Free-Form |
|---|---|---|---|---|
| File Type | JPG, PNG, GIF | MP4, MOV | Up to 6 images (JPG, PNG, GIF) | Up to 20 images (JPG, PNG, GIF) Up to 5 videos (MP4, MOV) |
| Maximum File Size | 3 MB | 1 GB (up to 15 minutes) | GIFs: 3 MB Other types: 20 MB |
10 MB |
| Aspect Ratio / Resolution |
All ratios accepted Recommended:
|
Most ratios accepted Recommended:
|
Most ratios accepted Recommended:
|
Most ratios accepted Recommended:
|
| Text | Headline: Up to 300 characters | Headline: Up to 300 characters |
Headline: Up to 300 characters Caption: Up to 50 characters per image |
Headline: Up to 300 characters Caption: Up to 50 characters per image Body Copy: Up to 40,000 characters |
| Thumbnail |
Auto-generated or upload 400 × 300 px Max 500 KB |
Auto-generated or upload 400 × 300 px Max 500 KB |
Auto-generated or upload 400 × 300 px Max 500 KB |
Upload required 400 × 300 px Max 500 KB |
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