How to Add Captions to Short Videos

A large share of short-form viewers watch with the sound off, so captions are often the difference between a clip that makes sense and one that gets skipped. This guide covers a workflow that works in most editors and caption tools.

Where should captions go? Try each position

Illustrative only. Move the caption and see which spots usually stay clear of the app interface. Test on a real phone before you publish.

Step 1: transcribe

Use the automatic captions in your editor or an AI caption generator to produce a first draft from the audio. Clear speech with little background noise gives better results.

Step 2: correct the text

Read every line. Fix names, brands, numbers and technical terms, which are the words automatic captions get wrong most often. A single wrong word can change the meaning.

Step 3: keep lines short

Aim for one to two short lines at a time.
Break lines at natural pauses, not in the middle of a phrase.
Match the timing so words appear as they are spoken.

Step 4: style for readability

Use a clear, bold font and high contrast against the picture.
Add an outline or soft shadow if the background is busy.
Highlight a key word sparingly for emphasis.
Use the same style on every clip so your videos look consistent.

Step 5: place them in the safe area

Platform buttons and titles cover the edges of vertical video. Place captions in the upper-middle to middle of the frame, clear of the top bar, the very bottom and the right-hand side, and preview on a phone. The Shorts preview checker on this site shades the areas each app covers, so you can see where your captions sit.

Check before you export

Play the clip once with sound off to confirm it still makes sense, and once with sound on to confirm the captions match what is said.

Choosing a caption style

Plain white text with an outline is the most readable on varied backgrounds.
Word-by-word highlighting keeps attention but can feel busy for long sentences.
A box behind the text helps on bright or cluttered footage.

Pick one style and keep it, so your videos feel like a series.

Accessibility and languages

Captions help viewers who are deaf or hard of hearing, people in noisy places and people who speak another first language. If your audience is mixed, consider a second version in another language, and check machine translations with someone who speaks it.

Common caption mistakes

Captions that run ahead of or behind the speech.
Too much text on screen at once.
Colours that blend into the background.
Skipping the proofreading step.

Frequently asked questions

Are automatic captions accurate enough to post as they are?

Usually not. They are a good first draft, but names, accents and jargon often need fixing by hand.

Should I burn captions into the video or upload a caption file?

Burned-in captions look the same everywhere and are standard for short vertical video. A separate caption file can be switched on or off by the viewer but depends on the platform supporting it for that format.

Can captions improve how many people finish a video?

They can help viewers follow along, especially without sound, though results vary by audience and video.

Do I need a paid tool for captions?

Many editors include automatic captions, and some have free options with limits. Compare accuracy and export options on one of your own clips.

Keep reading

Some links on this site are affiliate links; see the disclosure. Platform rules and limits change, so confirm them on the platform’s own help pages.

How to add captions to short videos (and make them accurate)