Add captions to LinkedIn videos
Caption a LinkedIn video for free, right here in your browser. Drop in your clip, let the on-device AI transcribe it word for word, fine-tune the styling for the square feed, and export a 1:1 MP4 with the subtitles burned in — or a clean SRT file. No account, no upload, no watermark.
Built for the way LinkedIn plays video
LinkedIn is not TikTok, and your captions should not behave as if it is. The native feed favors a 1:1 square at 1080 x 1080, which holds a video at roughly the same height in the desktop column and the mobile app — so subtitles you place once read consistently in both. The tool above defaults to that square framing and lets you preview exactly where each line sits before you commit.
LinkedIn also lets you run long: a single post can hold up to ten minutes of footage. That is room for a full thought-leadership clip, a product walkthrough, or a recorded talk, and every second of it gets the same word-level captioning as a fifteen-second teaser. Add your file, watch the transcript build, and adjust from there.
Why captions decide whether your video gets watched
Most of LinkedIn happens at a desk, mid-workday, with the sound off. Someone scrolling between meetings in an open office will not dig out headphones to hear you — they will read it or keep scrolling. Captions are what make your video playable in that moment, no audio required.
There is a second effect specific to a professional feed: captioned video reads as more considered. Clean, well-timed subtitles signal that you put care into the post, which is the impression you want when your audience is colleagues, clients, and recruiters. The message lands silently, and it lands looking deliberate.
Word-perfect timing from on-device AI
The captions come from a speech model that runs locally in your browser. It auto-detects the spoken language across roughly 99 of them and transcribes with word-level timestamps — so each word appears the instant it is said, not a beat early or a sentence late. For a talking-head clip or a narrated demo, that precision keeps the text in sync with your mouth.
Nothing here is locked. Every word in the transcript is editable, so you can fix a name, a piece of jargon, or an acronym the model did not expect. Recording for a multilingual audience? Override the detected language or regenerate the captions in another one, and retime any individual line by hand before you export.
Your footage never leaves your computer
This runs entirely in your browser. Your video is read on your own device, the AI model downloads once and then works offline, and the file is never sent to a server — there is no upload step, no copy sitting in someone's cloud, and nothing of yours used to train a model.
That matters more on LinkedIn than almost anywhere, because the clips people caption here are often unreleased: an internal announcement, a customer story still under wraps, a draft of a keynote. You can caption all of it without it ever touching the internet. Private is not a setting you toggle — it is how the tool is built.
Caption styles that suit a professional feed
You get four animated styles. Karaoke highlights each word as it is spoken, Highlighted boxes the active word in a color, Minimal shows one clean word at a time, and Dynamic gives that single word a small pop. For LinkedIn, the restrained options tend to read best — but the choice is yours, and every one is free.
From there you control the details that make captions feel native to a square frame: typeface from Inter, Montserrat, Oswald, Lora, or JetBrains Mono, plus weight and size, and a position of top, center, or bottom with a nudge to clear the lower play bar. Set text and highlight colors, add an outline or shadow for legibility over busy footage, and cap your words per line so nothing crowds the edges of the 1080 x 1080 canvas.
Export a square MP4 or a subtitle file
When the captions look right, export a 1:1 MP4 with them burned straight into the picture — the reliable way to make sure they show up in the LinkedIn feed exactly as you styled them, on every device, with no dependence on the platform's own player. Hardware acceleration keeps the render quick, and you choose between an output optimized for sharing or one held at source quality. Neither carries a watermark.
Prefer a separate file? Export an SRT or VTT and upload it alongside your video so LinkedIn shows toggleable closed captions. Either way, you can fine-tune the timing of any single line first. Every style, language, and export path is free, with no account.
Questions
Not necessarily. Burning them into the MP4 is the surest way to make them appear exactly as styled in the feed, on any device — that is what we would recommend for posts. You can also export an SRT or VTT and upload it with your video so LinkedIn offers toggleable closed captions. Both are free here, so use whichever fits your workflow.
A 1:1 square at 1080 x 1080 is the safe default — it holds its size well across the desktop column and the mobile app. The tool above frames captions for that square so they sit comfortably without crowding the edges. LinkedIn supports vertical and landscape too, and you can position your captions for any of them.
Large enough to read on a desktop screen from a few feet away, since that is where much of LinkedIn viewing happens. Keep the words per line low so text does not fill the frame, and add an outline or shadow if your footage is bright or busy. You can adjust size, position, and contrast live in the editor before exporting.
Yes. Every caption style, every language, the in-browser transcription, line-by-line timing edits, and both export paths — burned-in MP4 and SRT/VTT — are free for everyone. No account, no paywall at export, and nothing is stamped onto your video. Free is a deliberate choice we made.
No. The whole process runs in your browser on your own device. The AI model downloads once and then works locally, your file is never sent to a server, and none of your footage is used to train anything. That is a literal guarantee, which is why it is safe for unreleased or confidential LinkedIn clips.