// channels
Post everywhere. Know what paid.
21 channels connect today — the rest are coming soon.
Popular combinations
What actually changes when the same post goes to two different networks.
Character limits by platform
What each network actually accepts in a caption, and whether it will reject a text-only post. seenpaid checks both before it schedules, so the same draft can go to all 21 without one of them failing at publish time.
| Platform | Caption limit | Media |
|---|---|---|
| Medium | 250,000 | Optional |
| WordPress | 250,000 | Optional |
| Ghost | 250,000 | Optional |
| Dev.to | 250,000 | Optional |
| Hashnode | 250,000 | Optional |
| Webhook | 250,000 | Optional |
| 63,206 | Optional | |
| 40,000 | Optional | |
| Lemmy | 40,000 | Optional |
| VK | 16,000 | Optional |
| Nostr | 10,000 | Optional |
| Telegram | 4,096 | Optional |
| Tumblr | 4,096 | Optional |
| 3,000 | Optional | |
| Slack | 3,000 | Optional |
| 2,200 | Required | |
| TikTok | 2,200 | Required |
| Discord | 2,000 | Optional |
| 800 | Required | |
| Threads | 500 | Optional |
| Mastodon | 500 | Optional |
| Bluesky | 300 | Optional |
| X | 280 | Optional |
Limits are the ones seenpaid enforces in the composer. Networks change them occasionally — if you hit one that has moved, it is a bug worth telling us about.