

Mastodon post preview
Add your text and images and see the post the way Mastodon shows it, with the 500 character limit and the image size checked before you post.
- Free
- No sign-up
- Runs in your browser
Runs in your browser. Your text and images are not uploaded.

On the other networks


X
Ready to post
TikTok
Won’t post- Needs an image to post on TikTok


- Needs an image to post on Instagram

Threads
Ready to post
- Needs an image to post on Pinterest

Bluesky
Ready to post
Telegram
Ready to post
Discord
Ready to post
Google Business Profile
Ready to postHow Mastodon shows a post with images

Mastodon
1:1Mastodon shows up to 4 images under the text. 500 characters is the default; some servers allow more.
Post limits for every network
How many images a post takes on each network, the shape that shows best, and how long the text can be.
| Network | Images per post | Best shape | Accepted shapes | Image file | Text |
|---|---|---|---|---|---|
LinkedIn | Up to 10 | 1:1 | Any | 5 MB | 3,000 characters |
X | Up to 4 | 1:1 | Any | 5 MB | 280 characters |
TikTok | Up to 35 | 1:1 | Any | 10 MB | 2,200 characters |
Facebook | Up to 10 | 1:1 | Any | 4 MB | 10,000 characters |
Instagram | Up to 10 | 4:5 | 3:4 to 1.91:1 | 8 MB | 2,200 characters |
Threads | Up to 10 | 4:5 | 1:10 to 10:1 | 8 MB | 500 characters |
Pinterest | Up to 5 | 2:3 | Any | 10 MB | 800 characters |
Bluesky | Up to 4 | 1:1 | Any | 10 MB | 300 characters |
Mastodon | Up to 4 | 1:1 | Any | 10 MB | 500 characters |
Telegram | Up to 10 | 1:1 | 1:20 to 20:1 | 5 MB | 4,096 characters |
Discord | Up to 10 | 1:1 | Any | 10 MB | 2,000 characters |
Google Business Profile | Up to 1 | 4:3 | Any | 10 MB | 1,500 characters |
Questions about previewing posts
Post previews for each network
LinkedIn
X
TikTok
Facebook
Instagram
Threads
Pinterest
Bluesky
Telegram
Discord
Google Business ProfileImage the wrong shape? Crop it to every size with the free image resizer. Text too long? Check it with the character counter.
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