---
title: 'Auto Caption Generator - Add Subtitles to Video Free - OpenClip'
description: 'Generate AI-powered captions for your TikTok, Reels, and YouTube Shorts. Remove silences and filler words automatically. Demo accounts can use Quick Captions, and paid plans unlock the full OpenClip workflow.'
canonical: 'https://openclip.app/tools/auto-captions'
markdown: 'https://openclip.app/tools/auto-captions.md'
---

# Auto Caption Generator

Add subtitles, remove silences, and clean up filler words in one simple flow.

Word-level captions Silence cleanup Filler word removal

[Get Started Free](https://openclip.app/register) [See caption styles](#caption-styles)

Included

### AI-Powered Captions

Word-level subtitles built for vertical video.

Included

### Silence Removal

Tighten pauses before they kill the pacing.

Included

### Filler Word Removal

Cut the rough edges from spoken delivery.

How it works

## Three quick steps

Upload, review, export.

1

### Upload your video

Drop in a clip.

2

### Edit captions & cuts

Review the draft.

3

### Export your video

Export and post.

Caption style presets

## Pick a style and keep moving

A few strong starting points for different kinds of clips.

Hooks and punchlines

### Bold Pop

High-contrast, punchy, and fast.

Explainers and demos

### Minimal Clean

Quiet and polished for explainers.

Fast social pacing

### Karaoke Glow

Rhythmic emphasis for social clips.

## Frequently Asked Questions

### Is the auto caption generator free?

Yes. Demo accounts can use Quick Captions with a limited number of exports each month, and paid plans remove that limit while unlocking the full upload and clipping workflow.

### What languages are supported for captions?

Currently English is the primary supported language with high accuracy. Additional languages are being added regularly.

### How accurate are the AI-generated captions?

Our AI transcription produces highly accurate word-level captions. You can review and edit any word in the editor before exporting.

### Can I customize the caption style?

Yes, choose from multiple caption presets including different fonts, colors, sizes, and animation styles. You can also customize individual style properties.

### What video formats are supported?

MP4, MOV, WebM, and MKV files are supported. Most common video formats from phones, cameras, and screen recorders work out of the box.

### How does silence removal work?

Our AI analyzes the audio track to detect gaps between words. You can adjust the sensitivity threshold and preview the cuts before exporting.

## Ready to add captions to your videos?

Upload a video and get AI-powered captions, silence removal, and filler word detection in minutes.

[Get Started Free](https://openclip.app/register)

### More free tools

Keep editing inside the same browser-only toolkit.

- [Landscape to Portrait](https://openclip.app/tools/landscape-to-portrait-video): Turn 16:9 video into vertical 9:16.
- [M4V to MP4](https://openclip.app/tools/m4v-to-mp4): Convert Apple M4V files to standard MP4.
- [3GP to MP4](https://openclip.app/tools/3gp-to-mp4): Convert old phone videos to MP4.