Docs Publish
Captions and post details
Write a caption for each platform and preview the post in a feed.
A design becomes a post when it has captions. Open Post details at the top of the Studio.
Write captions
- Choose a platform tab: Instagram, Facebook, LinkedIn, X, TikTok, YouTube or Pinterest.
- Type the Caption, or choose Write with agent to have one written for every platform at once in your brand voice.
- Choose Save. A dot on the tab shows that platform has a caption.
Each platform gets its own caption. A LinkedIn caption can be long and considered; the X one has to fit in a post. The agent writes them differently on purpose, and you can edit any of them. Captions the agent wrote are tagged "Written by the agent" until you change them.
Limits
A counter under the box shows how much room is left. Soda will not schedule a caption that is over the limit.
| Platform | Caption | Also |
|---|---|---|
| 2,200 characters | Up to 30 hashtags (about 5 work best) and 20 mentions. Up to 20 images in a carousel. | |
| 63,206 characters | ||
| 3,000 characters | Up to 20 images. | |
| X | 280 characters | A link counts as 23 characters and most emoji as 2. Up to 4 images. |
| TikTok | 2,200 characters | A title of up to 90 characters for photo posts. |
| YouTube | 5,000 characters | A title of up to 100 characters. |
| 800 characters | A title of up to 100 characters. |
Hashtags
Instagram has its own Hashtags field: type one and press Enter. They are added after the caption when the post goes out. On other platforms, write hashtags in the caption itself.
Preview in a feed
Under the caption, In the feed shows roughly how the post will look on that platform, with the caption cut where a feed would cut it. It is our own drawing of a feed, not the platform's, so treat the exact cut-off as approximate.
If it says "No portrait version yet" (or landscape, vertical, pin), the design has no page in the shape that platform prefers. Add the format below the canvas: see Pages and formats.