How to Add Captions to LinkedIn Video (2026)

LinkedIn video autoplays muted in the feed, which makes captions less of an accessibility feature and more of the difference between a video that gets watched and one that gets scrolled. LinkedIn accepts an SRT upload — and only SRT — but burning captions into the video is the better default, because the SRT track is off by default for many viewers and doesn't travel when the file is reposted.

Both routes, plus the format rules LinkedIn is strict about.

Route 1: Upload an SRT File

LinkedIn supports subtitle uploads on native video, on desktop.

On desktop, when posting:

Start a post and select your video.
Before publishing, click the settings / edit control on the video preview.
Choose Select subtitle (SRT) and upload your file.
Publish.

On an existing post: LinkedIn's ability to add captions after publishing has been inconsistent across versions. If the option isn't there, the reliable fix is to delete and repost with the SRT attached — which costs you the existing engagement, so attach it the first time.

On mobile: subtitle upload is generally not available. Post from desktop if you want an SRT track.

LinkedIn's format rules — it is strict:

SRT only. VTT is rejected. See SRT vs VTT vs SBV.
UTF-8 encoding.
Correct SRT structure — sequence number, HH:MM:SS,mmm --> HH:MM:SS,mmm with a comma, text, blank line.
LinkedIn rejects malformed files with a generic error, so validate before uploading. Opening the file in VLC with the video is the fastest check.

Route 2: Burn Them In (Recommended)

Render the captions into the video pixels before you upload.

Why this is the better default on LinkedIn:

Always visible. No toggle, no viewer setting, no reliance on LinkedIn rendering the track.
Survives reposting. LinkedIn content gets downloaded and reshared constantly, and an SRT track doesn't come with the file.
Style control. You can size and position captions for a feed viewed on a phone, which LinkedIn's own rendering doesn't let you do.
Works on mobile posting, where SRT upload doesn't exist.

The trade-off: burned-in captions can't be turned off, and they aren't machine-readable, so you lose whatever indexing benefit the SRT track provides.

The complete answer: burn them in and upload the SRT. One transcript produces both, and you get visibility plus accessibility plus indexing.

How to do it: how to burn subtitles into video on Mac.

Styling for the LinkedIn Feed

LinkedIn is not TikTok, and copying a TikTok caption preset here looks wrong in a professional feed.

What to change from a short-form preset:

Tone down the animation. Word-by-word karaoke captions with a bouncing highlight read as consumer content. Full-sentence captions or a subtle word highlight fit the context better.

Fewer accent colours. One, or none. White with a dark outline is enough.

Font: a clean, heavy sans — Inter Bold, Montserrat Bold or Roboto Black. Inter suits the context particularly well since it reads as neutral and professional.

Size: each line at 5–7% of frame height. Slightly smaller than TikTok, because LinkedIn viewers are more often on desktop where the video is larger.

Position: LinkedIn's UI overlay is lighter than TikTok's, but the bottom of the video still carries controls and the post text sits directly beneath. Keep captions in the middle-to-lower-third, not at the very bottom.

Aspect ratio: square (1:1) and vertical (4:5) both perform well in the LinkedIn feed and take more vertical space than 16:9. Full 9:16 works but gets letterboxed on desktop. 4:5 is the practical sweet spot.

Why This Matters More on LinkedIn Than Elsewhere

Muted autoplay is the default viewing mode. LinkedIn is used at a desk, in an office, between meetings. Sound-on is the exception, not the rule.

The audience is skimming. LinkedIn feed behaviour is closer to scanning a newsletter than to lean-back video watching. Captions let someone extract the point without committing to watching.

Your buyer might be watching without engaging. B2B video is often consumed by people who will never like or comment but will remember you. Captions are what make silent consumption possible.

Accessibility is more visible here. LinkedIn is a professional context where inaccessible content reflects on you and your company more directly than it does on a personal TikTok.

The Workflow

Record. 4:5 or 1:1, good audio — LinkedIn video is speech-led and bad audio is fatal.
Cut the dead air. Muted viewers can't tell you paused, but the pacing still shows. See how to remove silence from video automatically.
Transcribe and generate captions.
Proofread the transcript — jargon and company names are what get transcribed wrong, and on LinkedIn those are exactly the words your audience is checking.
Burn captions in, styled for the feed.
Export an SRT too, and upload it with the post from desktop.
Write the post text to work alone. Many people read the post and never play the video.

Frequently Asked Questions

Does LinkedIn add captions automatically?

LinkedIn has offered auto-captioning on native video, though availability has varied by account type and region and the accuracy is unremarkable. Don't rely on it — supply your own captions.

What subtitle format does LinkedIn accept?

SRT only, UTF-8 encoded. VTT and other formats are rejected.

Can I add captions to a LinkedIn video after posting?

Support for this has been inconsistent. If the option isn't available on your post, the only reliable fix is deleting and reposting with the SRT attached — so add it before publishing.

Should I burn captions into LinkedIn videos?

Yes, as the default. LinkedIn autoplays muted and content gets downloaded and reshared without the subtitle track. Uploading the SRT as well gives you accessibility and indexing on top.

What aspect ratio is best for LinkedIn video?

4:5 vertical or 1:1 square. Both take more feed space than 16:9 without getting letterboxed on desktop the way full 9:16 does.

How long should a LinkedIn video be?

30–90 seconds for most content. LinkedIn tolerates longer than TikTok because the audience is there to learn something, but attention still drops sharply past about two minutes.

Record once, ship to LinkedIn and everywhere else. BlitzCut AI cuts the filler, captions the video for muted desk viewing, and exports both a burned-in version and a clean SRT. Mac and iPhone.

Try BlitzCut AI free for 3 days

Last Updated: August 23, 2026 Category: Captions & Platforms Topic: LinkedIn Video Captions