A big share of people scroll with the sound off. If your video only works with audio, you've lost them in the first second. Captions fix that, and good ones also keep people watching.
Why captions matter
- Muted viewers can follow along. Without captions, a talking-head video is just a face moving.
- They hold attention. Words appearing as you speak give the eye something to track, which helps retention.
- They help in noisy places and for accessibility. Viewers who are hard of hearing, or watching on a train, can still watch.
- They reinforce the hook. Your first spoken line, on screen, doubles as a text hook.
Built-in auto captions vs. styled captions
Instagram, TikTok and YouTube all offer automatic captions. They're quick, but they look the same as everyone else's, viewers can turn them off, and you can't always control position or styling.
Captions you add to the video yourself ("burned in" or added in your editor) are always visible, look the way you want, and can highlight words for emphasis. For talking-head content, that's usually worth it.
What makes captions easy to read
- Short chunks. One to four words at a time. Long lines make people read instead of watch.
- Word-synced timing. Each word appears as you say it. Captions that run ahead of or behind the speaker are distracting.
- Big and bold. A heavy sans-serif font, large enough to read on a phone at arm's length.
- High contrast. White or yellow text with a dark outline or shadow works on almost any background.
- Emphasis on a few words. Highlight key words with color or size, not every third word. If everything is emphasised, nothing is.
- Consistent style. Use the same look across videos so your content is recognisable in the feed.
Where to put them
Each app covers parts of the screen with buttons, the caption, your username and the audio name, mostly along the bottom and the right side. Keep captions in the middle of the frame, a bit below your face, and away from those edges. Preview your export on your phone before posting.
How to make captions with Captions to Titles
PostKit's Captions to Titles turns your speech into styled, word-synced captions. It works in your browser, with no account needed.
- Drop in your video or audio (up to 50 MB).
- It transcribes automatically, with word-level timing. It detects the spoken language, including English, Hindi, Telugu, Spanish, French, German, Portuguese, Japanese, Korean and Chinese. If you speak a language other than English, you also get an English translation track.
- Fix any words and style it. Adjust the text, pick a look and emphasis.
- Export the format you need:
- Final Cut Pro (FCPXML): captions arrive as editable titles on your timeline, already synced.
- Transparent overlay (.mov): a caption layer you can drop on top of your video in any editor.
- MP4 with captions burned in: ready to post, if your browser supports it.
- .itt subtitles: a standard subtitle file.
Your projects are saved in your browser, so you can come back and tweak them.
Captioning in Final Cut Pro
If you edit in Final Cut Pro, captioning by hand means typing and timing every title. Exporting FCPXML from Captions to Titles skips that: import the file and each caption lands as a title, synced to your speech, styled the same way, and still editable if you want to tweak one.
Quick checklist
- 1–4 words per caption, synced word by word
- Bold font, high contrast, readable on a phone
- Kept clear of the bottom and right-side buttons
- A few key words emphasised, not every line
- Spelling checked, especially names and brands
- Previewed on your phone before posting
Once your video is captioned, post it to Instagram, TikTok and YouTube Shorts at once.