Supported networks and what each takes - PostMesh

12 networks, one composer.

In short: PostMesh publishes and schedules to Instagram, Facebook Pages, Threads, Reddit, X, LinkedIn, YouTube, TikTok, Bluesky, Mastodon, Telegram and Discord. A post holds up to 35 photos and videos, and each network gets the ones it takes, in order.

At a glance

Network	What you can post
Instagram	Photos, carousels and Reels
Facebook Pages	Text, photo and video posts to Pages
Threads	Text, photo, video and carousel posts
Reddit	Text, link, image and video posts
X (Twitter)	Text, image and video posts
LinkedIn	Text, image and video posts to your profile
YouTube	Videos and Shorts
TikTok	Videos and photo posts
Bluesky	Text, photo and video posts
Mastodon	Text, photo, video and poll posts
Telegram	Messages, photos, videos and albums to channels and groups
Discord	Messages with photos and videos, to channels, forums and threads

Not supported yet

Pinterest, LinkedIn Company Pages and Instagram Stories. Each network’s page lists what it doesn’t support.

Photos and video

Network	Each post	Photos	Video
Instagram	Up to 20 photos and videos.	JPEG up to 8 MB, 4:5 to 1.91:1	MP4 or MOV, 3 seconds to 15 minutes, up to 300 MB
Facebook Pages	Text only, up to 10 photos or one video.	JPEG, PNG or GIF up to 10 MB	MP4, MOV or WebM, up to 1 GB
Threads	Text only or up to 20 photos and videos.	JPEG or PNG up to 8 MB	MP4 or MOV, 1 second to 5 minutes, up to 1 GB
Reddit	Text only, up to 20 photos or one video.	JPEG, PNG or GIF up to 20 MB	MP4, up to 1 GB
X	Text only, up to 4 photos or one video.	JPEG, PNG, GIF or WebP up to 5 MB, GIFs up to 15 MB	MP4 or MOV, 0.5 seconds to 140 seconds, up to 512 MB
LinkedIn	Text only, up to 9 photos or one video.	JPEG, PNG or GIF up to 20 MB	MP4, WebM or MOV, 3 seconds to 30 minutes, up to 200 MB
YouTube	One video.	None	MP4, MOV, WebM, MPEG, AVI, WMV, FLV, 3GP or MXF, up to 256 GB
TikTok	Up to 35 photos or one video.	JPEG or WebP up to 20 MB	MP4, MOV or WebM, 3 seconds to 10 minutes or your account’s limit, up to 4 GB
Bluesky	Text only, up to 4 photos or one video.	JPEG, PNG or WebP up to 1,000,000 bytes	MP4, MOV, WebM or MPEG, 1 second to 3 minutes, up to 100 MB
Mastodon	Text only, up to 4 photos or one video.	JPEG, PNG, GIF or WebP up to 16 MB	MP4, WebM or MOV, up to 99 MB
Telegram	Text only or up to 10 photos and videos.	JPEG, PNG, WebP or GIF up to 10 MB, GIFs up to 50 MB	MP4 or MOV, up to 50 MB
Discord	Text only or up to 10 photos and videos.	JPEG, PNG, WebP or GIF up to 10 MB	MP4, MOV or WebM, up to 10 MB

Any JPEG, PNG, WebP, GIF or AVIF photo up to 40 MB works on every network that takes photos: when yours doesn’t fit a network’s rules, that network gets a JPEG copy that does. A post holds up to 35 photos and videos. Each network gets the ones it takes, in order, and New post says what a network leaves out. A TikTok photo post goes to TikTok on its own.