Platform Limits
Feature | Post |
Caption | Max 3,000 characters |
Images | ✅ (up to 9 images) |
Image size | 5MB max |
Videos | ✅ (1 video) |
Video length | 3 seconds - 15 minutes (900s) |
Video size | 5GB max |
Video formats | MP4 (H.264 codec, AAC audio) |
Image formats | JPG, PNG, GIF |
Image resolution | Min 552x276, Max 1920x1080 |
Video resolution | Min 256x144, Recommended 1920x1080 |
Aspect ratio | Optimal for professional content |
Carousel | ✅ (up to 9 images) |
Frame rate | 24-60 fps |
Video bitrate | Min 192kbps, Recommended 1024kbps |
LinkedIn Mentions
To mention someone on LinkedIn in Dopost, type “@” in the caption editor and start writing the name of the person or company. Type at least 3 characters to load results. Click the result you want and it will be inserted as a bold mention. You can copy this mention and paste it into any of your other LinkedIn accounts, and it will still work.
If you’re searching for a company or school and don’t see it, try using the vanity slug from the LinkedIn URL.
Example:https://www.linkedin.com/school/harvard-university/ → search “harvard-university” instead of “Harvard”.
Searching for people only returns followers of your organization. This is a LinkedIn API limitation.
Account limitations:
Personal accounts can only mention companies, schools, universities, etc.
Organization accounts can mention their followers (people) as well as companies, schools, universities, etc.
Mentions can be cross-shared between accounts. For example, you can copy a person mention generated from an organization account and paste it into a personal account’s caption.