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Mastodon

Mastodon image size guide

The size, ratio, file limit and video length for every Mastodon post type. Drop in your file to check it, or crop it to the right size.

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Post

Images and video

1080 × 1080 px1:1

Also crops well at 16:9

Images
Any ratio, up to 10 MB
Video
Any ratio, up to 40 MB
Video length
No set limit
Files per post
Up to 4
GIFs
Keep playing

* Foliwo’s upload limit. The network may take bigger files.

On the other networks

LinkedIn

LinkedIn

  • Post1080 × 1080 px
X

X

  • Post1080 × 1080 px
TikTok

TikTok

  • Video1080 × 1920 px
  • Photo carousel1080 × 1080 px
YouTube

YouTube

  • Short1080 × 1920 px
Facebook

Facebook

  • Post1080 × 1080 px
  • Reel1080 × 1920 px
  • Story1080 × 1920 px
Instagram

Instagram

  • Feed Post1080 × 1350 px
  • Reel1080 × 1920 px
  • Story1080 × 1920 px
Threads

Threads

  • Thread1080 × 1350 px
Pinterest

Pinterest

  • Pin1000 × 1500 px
  • Video Pin1080 × 1920 px
  • Carousel1080 × 1620 px
Bluesky

Bluesky

  • Post1080 × 1080 px
Telegram

Telegram

  • Post1080 × 1080 px
Discord

Discord

  • Message1080 × 1080 px
Google Business Profile

Google Business Profile

  • Post1080 × 810 px
Good to know

What to know about Mastodon media

Mastodon

Mastodon

Each server can set its own limits, so yours may allow larger files. GIFs keep playing.

Reference

Image and video sizes for every network

The size to make each post type, the ratios and file sizes it accepts, and how long a video can be.

Network Post type Size Images Video Video length Files
LinkedIn LinkedInPost1080 × 1080 px 1:1Any · 5 MBAny · 1 GB10 minUp to 10
X XPost1080 × 1080 px 1:1Any · 5 MBAny · 1 GB20 minUp to 4
TikTok TikTokVideo1080 × 1920 px 9:16—Any · 1 GB10 min1
Photo carousel1080 × 1080 px 1:1Any · 10 MB——1 to 35
YouTube YouTubeShort1080 × 1920 px 9:16—Any · 1 GB3 min1
Facebook FacebookPost1080 × 1080 px 1:1Any · 4 MBAny · 1 GB4 hoursUp to 10
Reel1080 × 1920 px 9:16—1:2 to 3:5 · 1 GB90 sec1
Story1080 × 1920 px 9:16Any · 10 MB1:2 to 3:5 · 1 GB60 sec1
Instagram InstagramFeed Post1080 × 1350 px 4:53:4 to 1.91:1 · 8 MB1:100 to 10:1 · 100 MB60 secUp to 10
Reel1080 × 1920 px 9:16—1:100 to 10:1 · 300 MB15 min1
Story1080 × 1920 px 9:16Any · 8 MB1:10 to 10:1 · 100 MB60 sec1
Threads ThreadsThread1080 × 1350 px 4:51:10 to 10:1 · 8 MBAny · 1 GB5 minUp to 10
Pinterest PinterestPin1000 × 1500 px 2:3Any · 10 MB——1
Video Pin1080 × 1920 px 9:16—Any · 1 GB15 min1
Carousel1080 × 1620 px 2:3Any · 10 MB——2 to 5
Bluesky BlueskyPost1080 × 1080 px 1:1Any · 10 MBAny · 300 MB10 minUp to 4
Mastodon MastodonPost1080 × 1080 px 1:1Any · 10 MBAny · 40 MBNo set limitUp to 4
Telegram TelegramPost1080 × 1080 px 1:11:20 to 20:1 · 5 MBAny · 20 MBNo set limitUp to 10
Discord DiscordMessage1080 × 1080 px 1:1Any · 10 MBAny · 20 MBNo set limitUp to 10
Google Business Profile Google Business ProfilePost1080 × 810 px 4:3Any · 10 MB——1

File sizes stop at what Foliwo uploads: 10 MB for an image and 1 GB for a video. Some networks take bigger files.

FAQ

Questions about image sizes

Size guides for each network

Every network at once LinkedIn LinkedIn image sizeX X (Twitter) image sizeTikTok TikTok video sizeYouTube YouTube Shorts sizeFacebook Facebook post sizeInstagram Instagram post sizeThreads Threads image sizePinterest Pinterest pin sizeBluesky Bluesky image sizeTelegram Telegram image sizeDiscord Discord image sizeGoogle Business Profile Google Business Profile photo size

Writing the caption too? Check it with the Mastodon character counter. Made by Foliwo, the social media scheduler that checks every file as you add it.

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