Thumbnail problems
Wrong video thumbnail on LinkedIn: what you can control
Short answer
LinkedIn's video sharing help lists file types, resolution, aspect ratio, frame rate, bit rate and safe zones, but it does not document a cover or thumbnail option for a video post. Some creators and scheduling tools report a thumbnail picker in the desktop composer; if yours shows it, use it. If not, the card shows a frame taken from the video itself, so the framing of the first seconds is the control you have.
Key takeaways
- LinkedIn's help pages do not document a cover or thumbnail option; if your desktop composer offers one, use it.
- Published limits: aspect ratio 1:2.4 to 2.4:1, resolution 256 × 144 to 4096 × 2304, 10 to 60 fps, 192 Kbps to 30 Mbps.
- LinkedIn documents that a larger aspect ratio may be cropped on the sides and at the top and bottom; a wider one is fitted to the screen.
- LinkedIn tells creators to keep the edges free of key elements, text and logos so the interface does not cover them.
- The first frame of your video is the preview people see: make it carry the point.
Find your case
| What you see | What it usually means | Do this |
|---|---|---|
| No cover or thumbnail option anywhere | LinkedIn documents none and it may not show on mobile or for every account | Check the desktop composer, otherwise work on framing (step 4) |
| Card shows a frame with half the subject missing | A larger aspect ratio is cropped on the sides and top and bottom | Reframe so the subject is central (step 2) |
| Video shown with bars or letterboxed | A wider aspect ratio is fitted to the screen | Match the ratio you post at (step 3) |
| Text invisible on the card | Text sits where LinkedIn's interface covers the video | Keep text off the edges (step 3) |
| Upload refused | A file type or value outside the published list | Check formats and limits (step 1) |
| Card looks fine, full-screen player looks wrong | The full-screen vertical player applies its own cropping | Preview in the player too (step 5) |
Fix it step by step
Stay inside the published file requirements
LinkedIn lists MP4, MOV, AVI, WEBM, MKV, WMV and several others as supported, with a maximum of 5 GB, a minimum of 75 KB, a maximum duration of 15 minutes, a minimum of 3 seconds from desktop and 2 seconds from the mobile app, a resolution range of 256 × 144 to 4096 × 2304, an aspect ratio of 1:2.4 to 2.4:1, 10 to 60 fps and 192 Kbps to 30 Mbps. LinkedIn also warns that a file can upload and then fail to process, for example ProRes.
Reframe for the crop LinkedIn documents
LinkedIn's full-screen vertical video help states that uploaded videos with a larger aspect ratio may be cropped on the sides as well as at the top and bottom, and that videos with a wider aspect ratio may be fitted to the screen. Put the subject in the middle of the frame so either outcome keeps it.
Keep text and logos off the edges
LinkedIn's video sharing help includes a video safe zones note: keep the edges, top, bottom and sides of your video free of key elements, text and logos so they stay within the safe zone and are not overlapped by the LinkedIn user interface. It publishes no numbers for those edges, so use the widest margin you can afford.
Make the first frame do the work
If your composer offers no thumbnail picker, the frame that represents the post is one the card takes from the video itself. Start the clip on a frame where the subject is centered and recognizable rather than on a black frame or a slow fade-in, and cut to the point quickly.
Check the full-screen vertical player too
LinkedIn's vertical video experience shows videos in a full-screen player where you can react, comment, share, change playback speed and show or hide closed captions. It may not be available to every member. What you see there is what a viewer sees there, so preview it before you post.
Export at a size LinkedIn accepts without a resize
ffmpeg -i in.mov -c:v libx264 -crf 20 -pix_fmt yuv420p -c:a aac -b:a 160k out.mp4keeps the frame size inside the published range and uses the codecs LinkedIn's list starts with, so the post card shows the framing you exported.
LinkedIn video values, as published
| Cover image | Not documented by LinkedIn · check your desktop composer |
|---|---|
| Aspect ratio | 1:2.4 to 2.4:1 |
| Resolution | 256 × 144 to 4096 × 2304 |
| Frame rate | 10 to 60 fps |
| Bit rate | 192 Kbps to 30 Mbps |
| Size and length | 75 KB to 5 GB, 2 or 3 s to 15 min |
| Safe zones | Keep the edges free of key elements, text and logos · no numbers published |
What LinkedIn publishes, in one place
| Value | Published range |
|---|---|
| File size | 75 KB to 5 GB |
| Duration | 2 s (mobile) or 3 s (desktop) minimum, 15 minutes maximum |
| Resolution | 256 × 144 to 4096 × 2304 |
| Aspect ratio | 1:2.4 to 2.4:1 |
| Frame rate | 10 to 60 fps |
| Bit rate | 192 Kbps to 30 Mbps |
A file outside these values is the kind that uploads and then fails to process, which LinkedIn warns about explicitly with ProRes.
Frequently asked questions
How do I change the thumbnail on a LinkedIn video?
LinkedIn's help does not document a cover image. If your desktop composer shows a thumbnail option, use it; otherwise control what the card shows by framing the first seconds of the video.
Why is my LinkedIn video cut on the sides?
LinkedIn documents that uploaded videos with a larger aspect ratio may be cropped on the sides as well as at the top and bottom. Keep the subject centered in the frame.
What aspect ratio should I post to LinkedIn?
LinkedIn publishes a range of 1:2.4 to 2.4:1 and a resolution range of 256 × 144 to 4096 × 2304. Inside that range, choose the ratio that matches how you framed the shot.
Why does my text disappear on LinkedIn?
LinkedIn tells creators to keep the edges of the video free of key elements, text and logos so they are not overlapped by the interface. It does not publish exact edge measurements.
Sources
- LinkedIn Help: Video sharing troubleshooting (formats, limits, safe zones) (official, checked 2026-10-07)
- LinkedIn Help: Full-screen vertical video on LinkedIn (official, checked 2026-10-07)
- FFmpeg Documentation: Command line options (-map, -c copy, -itsoffset) (official, checked 2026-10-07)
Reviewed 2026-10-07. Steps not attributed to a source are general video practice or computed above.