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Platform capabilities

Buzzator publishes to a dozen social networks, and each one has its own rules — caption length, how many images fit in a post, whether video is allowed, and more. This page is the at-a-glance reference: what every supported platform can do, and where the hard limits sit. For the detail on any one network, follow its link.

Buzzator enforces these limits for you. If a caption runs long or you attach one image too many, the Composer flags it before you publish, so you rarely hit a platform's raw error.

Supported platforms

Platform Formats Also supports
Instagram Single, carousel, story, reel Inbox, analytics
Facebook Single, carousel, reel, story Inbox, analytics
LinkedIn (profile + Company Page) Single, document carousel Inbox, analytics
X (Twitter) Single, thread Inbox, analytics
TikTok Video, photo Inbox, analytics
YouTube Single video Inbox, analytics
Pinterest Single, carousel Inbox, analytics
Threads Single, thread Inbox, analytics
Bluesky Single, thread Publish (inbox + analytics in progress)
Dribbble Single image Publish only
Slack Single message Inbox, engagement analytics
Twitch Single action Publish only

For messaging and comments, see Inbox. For what each network reports back, see What each platform reports.

Platform Caption Hashtag cap Images / carousel Video
Instagram 2,200 30 Up to 10 per carousel Feed ~100 MB / 90 s · Reel ~300 MB / 15 min · Story ~60 s
Facebook 63,206 — Up to 10 per carousel Feed ~1 GB / up to 4 h · Reel ~90 s
LinkedIn 3,000 10 Document carousel up to 9 pages ~5 GB / 10 min, MP4 only
X (Twitter) 280 (up to 4,000 / 25,000 on Premium) — 4 images or 1 video ~512 MB / 140 s (Premium up to ~8 GB / 3 h)
TikTok 2,200 — Photo post up to 35 ~1 GB / up to 10 min
YouTube 5,000 (description) 15 1 video (+ optional thumbnail) Up to ~12 h
Pinterest 500 20 Up to 5 per carousel 1 video, ~2 GB / 15 min
Threads 500 — Carousel 2–20 1 video, ~1 GB / 5 min
Bluesky 300 — Up to 4 images 1 video, ~50 MB / 60 s
Dribbble 40,000 — 1 image (400×300 or 800×600 px only) Not supported
Slack 3,000 — Images or 1 video 1 video, ~500 MB
Twitch 500 — None (text only) Not supported

Caption limits are character counts

The numbers above are maximum characters. Buzzator truncates a caption that exceeds the platform's limit rather than letting the publish fail, but it's better to write to the limit yourself.

X caption grows with your subscription

A standard X account caps at 280 characters. Buzzator detects your X Premium tier when you connect and raises the ceiling to 4,000 (Premium) or 25,000 (Premium+). See X (Twitter).

Media is required on some platforms

A few networks reject a post that has no image or video attached. Buzzator blocks you from scheduling a text-only post to these:

Platform Why
Instagram The publishing API rejects text-only posts.
TikTok Every post needs a video or at least one photo.
Pinterest A Pin is an image or video by definition.
Dribbble A shot is a single image.

Everywhere else you can publish text on its own — Facebook, LinkedIn, X, Threads, Bluesky, Slack, and Twitch all accept a caption with no media.

One video per post — and the "images or video" rule

Several platforms allow only a single video per post, and some won't let you mix images and a video in the same post:

  • X, Slack, and Pinterest take either images or one video — never both in one post.
  • Threads, Bluesky, and YouTube take at most one video per post.
  • LinkedIn can't mix media types at all: a post is images-only, one video, or one document carousel.

Instagram carousels are the exception — they can hold a mix of images and video children. Facebook multi-photo posts are images-only: a video attached alongside photos is dropped.

Next steps