Ten networks, natively.

10 platforms: LinkedIn, Facebook, Instagram, X (Twitter), TikTok, YouTube, Pinterest, Reddit, Medium, and Hacker News. The engine doesn't reformat one caption ten ways — it writes for each network's content types, character limits, and media rules. Here's exactly what it supports on each.

The format matrix

Platform Content types Char limit Media
LinkedIn Text, image+text, article, carousel 3,000 JPG, PNG, GIF, PDF, PPT, DOC
Facebook Text, image+caption, video 63,206 JPG, PNG, GIF, MP4, MOV
Instagram Image+caption, carousel, Reels 2,200 JPG, PNG, MP4, MOV
X (Twitter) Tweet, image tweet, thread 280 JPG, PNG, GIF, MP4
TikTok Video, duet, stitch 2,200 MP4, MOV
YouTube Video, Shorts 5,000 MP4, MOV, AVI, MKV
Pinterest Image/video pin 500 JPG, PNG, GIF, MP4
Reddit Text post, link post 40,000 JPG, PNG, GIF, MP4
Medium Long-form article Unlimited JPG, PNG, GIF
Hacker News Tell HN, Ask HN, Show HN Unlimited Text only

Explore each network

Coming next (planned)

On the roadmap, not yet shipped: Threads, Bluesky, Mastodon, Telegram, and Discord. Track progress on the roadmap.

Forty minutes from now, this could be running.

Start free →

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