How to caption clips for TikTok, Reels and Shorts

Updated 15 October 2026 · Written by the SOVE7GN founders

This guide is for clippers, editors and creators who want captions that people can read in a fast-scrolling feed. It covers what kind of captions to use, how to style and place them, which auto-caption tools each app has, and how to make them accessible.

Burned-in vs native captions

Burned-in (open) captions are part of the video. Native (closed) captions are a text track the app shows or hides. The W3C defines the difference: open captions are always on; closed captions can be turned on and off by the viewer.

Most clips use both. Burned-in captions do the work in the feed. Native captions help viewers who rely on them and give the app a text version of your audio.

Style rules that read on a phone

Captions are read in a fraction of a second on a small screen. These rules hold on every app:

• 1 to 4 words per caption for talk clips. Short chunks are easier to follow than full sentences.
• Bold sans-serif font with a dark outline or shadow, so it reads on light and dark footage.
• High contrast. White or yellow on an outline. Avoid thin fonts and pastel colors.
• Highlight one word, not all of them. Color the key word in a line for emphasis.
• Sync to speech. Captions that run early spoil punchlines. For comedy, show the punchline only when it's said.
• Fix names and slang. Wrong names are the most common auto-caption error and the most noticed.
• Keep the hook text separate. The opening on-screen hook sits above the subject's head; captions sit lower. See short-form video hooks.
• One style per account. Same font, size and position every time.

Where to put captions: safe zones

The bottom and right side of a vertical video are covered by buttons, usernames and post text. Meta's Reels ad specs (checked October 2026) suggest keeping about 14% at the top, 35% at the bottom and 6% on each side free of text. On a 1080 x 1920 frame, that leaves a box from roughly 270 px to 1250 px down the frame.

In practice, place captions just below the middle of the frame, around the subject's chest. That clears the bottom UI on TikTok, Reels and Shorts at once. TikTok publishes its own safe-zone templates for ads and says the safe area gets smaller as the post caption gets longer, so keep post captions short if your on-screen text sits low. More specs are in clip specs by platform.

Auto-caption tools on each app

Every major app now makes captions for you. None of them is accurate enough to skip a proofread. What each platform says (checked October 2026):

For burned-in captions, most clippers use an editor with auto captions, then correct them by hand. CapCut is widely used on phones; desktop editors and AI clipping tools also generate captions. See clipping tools for clippers and best clipping software.

Accessibility basics

Captions are also an accessibility feature, not just a reach tactic. The W3C's captions guidance says captions should carry both speech and the non-speech audio needed to follow the content, and that WCAG 2 requires captions for prerecorded video with audio at Level A (success criterion 1.2.2).

For clips, that means:

• Caption every spoken word that matters, not only the highlights.
• Add key sounds in brackets: [laughter], [crowd cheers], [music stops]. A comedy clip without [laughter] loses its timing for deaf viewers.
• Label speakers when two people talk, with a name or a color per speaker.
• Leave native captions on so screen readers and caption settings work.

Caption checklist

Run this before every clip goes out:

1. Burned-in captions on, inside the safe zone.
2. Native auto captions turned on and corrected.
3. Names, brands and slang spelled right.
4. 1 to 4 words per caption, synced to speech.
5. Punchlines appear when spoken, not before.
6. Key sounds in brackets.
7. Hook text and captions don't overlap.
8. No watermark from the editing app.
9. Readable on a phone at arm's length with the sound off.
10. In paid campaigns, the "Ad" label is on screen as well. See clipping and FTC disclosure.

In SOVE7GN campaigns, captions are one of the things a person checks on every clip within 24 hours, along with the brief's other rules.

Questions people ask