Reddit

Overview

Reddit API posting supports:

• ✅ Text posts
• ✅ Link posts
• ✅ Image posts (single image)
• ❌ Video posts (not supported via API)

Image Requirements

Aspect Ratios

Reddit is flexible with aspect ratios:

Image Post Example

{
  "content": "Check out this view from my hike!",
  "mediaItems": [
    { "url": "https://example.com/hiking-photo.jpg" }
  ],
  "platforms": [
    { "platform": "reddit", "accountId": "acc_123" }
  ]
}

Text Posts

Text-only posts without media:

{
  "content": "What's your favorite programming language and why?\n\nI've been using Python for years but considering learning Rust.",
  "platforms": [
    { "platform": "reddit", "accountId": "acc_123" }
  ]
}

Link Posts

Share a URL:

{
  "content": "Interesting article about AI",
  "link": "https://example.com/article",
  "platforms": [
    { "platform": "reddit", "accountId": "acc_123" }
  ]
}

Note: When a link is provided, Reddit creates a link post. The content becomes the post title.

Subreddit Selection

Posts are submitted to the subreddit configured on the connected Reddit account. You cannot change subreddits per-post via API.

GIF Support

Reddit supports animated GIFs:

• Static display until clicked
• Max 20 MB
• May convert to video format internally
• Keep under 10 MB for better performance

Video Limitations

Important: Reddit's API does not support video uploads for third-party applications. This is a Reddit API limitation, not a Late limitation.

If you need to post videos to Reddit:

1. Upload to a video hosting service (YouTube, Imgur, etc.)
2. Create a link post with the video URL

Formatting Tips

Reddit supports Markdown in text posts:

# Heading
**Bold text**
*Italic text*
- Bullet points
1. Numbered lists
[Link text](https://example.com)
> Block quotes
`inline code`

Common Issues

"Post rejected by subreddit"

Each subreddit has rules:

• Some require flair
• Some don't allow images
• Some have karma requirements
• Check r/subreddit rules

"Rate limited"

Reddit has strict rate limits:

• ~10 posts per day for new accounts
• Higher limits for established accounts
• Wait between posts

Image not displaying

• Check file size (≤20 MB)
• Ensure valid format (JPEG, PNG, GIF)
• Verify URL is publicly accessible

"Video not supported"

Reddit API doesn't support video uploads. Use a link post with a video URL instead.

Post removed

Moderators may remove posts for:

• Breaking subreddit rules
• Spam detection
• Missing required flair
• Low karma accounts