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Image and video rules by network

Every network takes different media: how many images, which formats, how large, what shape, and how long a video can run. This table lists what 1Post checks for each network before a post is sent, with the Threads and Instagram figures those networks publish cited and dated.

Also:Free image resizer and cropperFree video spec checkerSocial media posting limits by network

Updated 2026-10-26

Media checks (as of 2026-10-22)
NetworkMediaImages per postImage shape or sizeVideo lengthCarousel
XImages, GIFs, Video4---
LinkedIn profileImages, Video20---
LinkedIn PageImages, Video, Documents----
Facebook PageImages, Video--3 seconds to 90 seconds-
InstagramImages, Video104:5 to 1.91:1-2 to 10 items
ThreadsImages, Video20320 to 1440 pixelsAny to 5 minutes2 to 20 items
TikTokImages, Video----
YouTubeVideo----
PinterestImages, Video5--2 to 5 items
BlueskyImages, Video4---
MastodonImages, GIFs, Video4---
Google Business ProfileImages1---
TumblrImages, GIFs, Video30---
TelegramImages, Video10--2 to 10 items
DiscordImages, Video10---
SlackText only----
WordPressImages1---
DEV CommunityImages1---
HashnodeImages1---
LemmyImages1---
WhopImages, Video, Documents----
DribbbleImages1400 x 300 or 800 x 600--
TwitchText only----
KickText only----

A dash means no rule is checked for that field. Check a file with the image resizer or the video spec checker.

What Threads publishes for media
MediaRule
ImagesJPEG or PNG, up to 8 MB, aspect ratio no wider than 10:1, width scaled into 320 to 1440 pixels
VideoMOV or MP4, up to 5 minutes and 1 GB, 23 to 60 frames per second, up to 1920 pixels wide
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Questions

Why does 1Post check media before posting?

A file a network would refuse is found in the composer, where you can fix it, rather than when the post is due.

Does 1Post convert files?

Where a network takes only one format, such as JPEG on Instagram, a PNG or WebP image is converted for you.

Sources

Schedule TikTok posts: formats, limits, setupTikTok specs and limits: text, media, daily capHow to schedule TikTok photo carousels in 1Post1Post vs Vista Social: price, networks, API
Free image resizer and cropper for social postsFree video spec checker for every social networkSocial media posting limits by network, dated

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