Solnk publishes to nine platforms. Select the destination accounts before adding media so the composer can validate the post against every selected platform.
What each platform accepts
| Platform | Text only | Images | Video | First comment | Scheduling |
|---|---|---|---|---|---|
| X | Yes, up to 280 characters | Up to 4 | 1 | Yes | Yes |
| No | Up to 10 | Up to 10 in a carousel | No | Yes | |
| Facebook Page | Yes | Up to 10 | Up to 10 | Yes | Yes |
| TikTok | No | Up to 35 in Photo Mode | 1 | No | Yes |
| YouTube | No | Thumbnail only | 1 required | Yes | Yes |
| Threads | Yes, up to 500 characters | Up to 20 | Up to 20 | No | Post now only |
| Bluesky | Yes, up to 300 characters | Up to 4 | 1 | Yes | Post now only |
| Yes, up to 3,000 characters | Up to 10 | 1 | Yes | Yes | |
| No | Up to 5 | 1 | No | Yes |
Images and videos cannot currently be mixed in the same post. Choose either images or one or more videos within the platform limit.
Thread or serial-post composition is not currently available in the dashboard, even where the social network supports it.
Account requirements
| Platform | Requirement |
|---|---|
| Business or Creator account (personal not supported) | |
| Facebook Page only (not personal profile) | |
| TikTok | An account accepted by TikTok's Content Posting API; availability is confirmed during connection |
| YouTube | Google account with a YouTube channel |
| Personal profile or Company Page (admin required for pages) | |
| An account that can authorize access to the required board | |
| Threads | Instagram Business/Creator account with Threads enabled |
| Bluesky | Any account — uses App Password (not your login password) |
| X / Twitter | Any account |
File formats and validation
Solnk accepts common web images and MP4 or MOV video, then checks the actual file against each selected platform. Some destinations accept fewer formats, so Solnk may prepare a compatible image during publishing or ask you to replace the file.
The message in the composer is the current requirement for that destination. It takes precedence over a generic limit because platform APIs and account capabilities can change.
For X specifically, use up to four JPEG, PNG, GIF, or WebP images of 5 MB each, or one MP4/MOV video up to 512 MB and 2 minutes 20 seconds.
Destination-specific options
When creating a post, some platforms show additional settings:
- Pinterest — Select which board to pin to, add a destination URL
- YouTube — Set title (required), privacy status, category, tags, and thumbnail
- TikTok — Direct Post or send to TikTok inbox, privacy and interaction controls, branded-content settings
- Facebook — Post or Reel selection when a video is attached
X, Instagram, Threads, Bluesky, and LinkedIn do not currently expose extra settings in the solnk composer.
Not currently supported
- Editing published posts from Solnk
- Instagram direct messages
- Facebook Groups or personal profiles
- YouTube image posts
- Mixing images and videos in the same post
- Thread/serial-post composition
For X-specific allowances, URL-post pricing, first comments, and failure messages, see X publishing limits and allowances.