Free AI Subtitle Generator for Auto Captions

Create accurate subtitles and auto captions from video or audio in minutes. Edit the text, style captions, and export SRT files or captioned videos.

Upload a Video or Audio File

Let the AI subtitle generator create synchronized captions automatically.

or drag and drop your file here

Supports popular video and audio formats up to 4GB and 3 hours

Fast AI transcription Multiple languages SRT & captioned video

Generating Your AI Subtitles

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Longer files can take a few minutes. Your file is still being processed.

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Subtitle Editor

Review and Export AI Subtitles

Audio preview

Subtitle preview is for reference only. Please refer to the final exported result.

Subtitle Style

Font
Alignment

Preset Styles

How to Generate Subtitles in 3 Steps

Upload your video or audio, generate accurate captions with AI, and export your subtitles in just a few clicks.

  1. Upload Your Video or Audio File

    Add a video or audio file from your device. Popular formats for social videos, lessons, interviews, and podcasts are supported.

  2. Generate and Edit AI Captions

    AI automatically detects speech and creates synchronized captions. Review the transcript, edit wording, and adjust subtitle timing before exporting.

  3. Customize Styles and Export

    Customize subtitle appearance, export videos with embedded captions, or download SRT subtitle files for YouTube, TikTok, and other platforms.

Edit with Confidence

Edit Auto Captions with the AI Subtitle Generator

Automatic captions give you a fast first draft. A clear editing workspace helps you review the transcript, adjust timing, and create readable subtitles that fit your brand.

  • Edit text and timing in a synchronized transcript
  • Customize fonts, colors, backgrounds, and position
  • Download subtitle files or burn captions into video
Subtitle editor preview
Make every video easier to watch.
Create accurate subtitles automatically.
Review the transcript and timing.
Style your captions and export.

Auto Captions for Every Kind of Content

Help audiences follow along wherever they watch, with or without sound.

YouTube Videos

Add accurate captions and downloadable transcripts to tutorials, reviews, interviews, and long-form videos.

Social Media Clips

Keep viewers engaged on TikTok, Instagram, LinkedIn, and other sound-off feeds with bold, readable captions.

Courses and Training

Make lessons easier to understand, review, and access for learners with different listening needs.

Meetings and Presentations

Turn recorded meetings, webinars, demos, and company updates into searchable, easy-to-skim content.

Podcasts and Interviews

Convert spoken conversations into timed subtitles and reusable transcripts without typing everything by hand.

Accessible Video

Give deaf and hard-of-hearing viewers, non-native speakers, and people in quiet spaces a clearer way to follow along.

Why Add Subtitles

Why Use an Auto Subtitle Generator Online

One subtitle workflow can improve reach, retention, accessibility, and discoverability.

Reach a Global Audience

Create captions for multilingual audiences and prepare subtitles for translation across channels and markets.

Keep Viewers Engaged

Readable on-screen text helps people understand your message in noisy places and on feeds where videos start muted.

Make Content Searchable

Reuse clean transcripts in descriptions, articles, and knowledge bases so spoken ideas are easier to find and review.

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AI Subtitle Generator FAQ

What to know before generating automatic subtitles online.

An AI subtitle generator uses speech recognition technology to convert spoken audio into synchronized captions. You can review, edit, customize, and export subtitles as SRT files or captioned videos.

Yes. After generation, you can correct each subtitle line and change its font size, color, background, and weight before exporting the video.

The generator accepts common browser-supported video and audio formats. Supported formats include *.mpe, *.mpeg, *.ogm, *.mkv, *.mpg, *.wmv, *.webm, *.ogv, *.mov, *.m4v, *.asx, *.mp4, *.avi, *.opus, *.oga, *.mka, *.flac, *.weba, *.wav, *.ogg, *.m4a, *.mid, *.mp3, *.aiff, *.wma, and *.au. Files can be up to 4GB and 3 hours, although shorter files process more quickly.

You can download the generated subtitles as an SRT file or export an MP4 video with the subtitles permanently embedded.

Subtitles make videos more accessible, easier to understand without sound, more engaging for mobile viewers, and simpler to search or repurpose as text.

Yes. The free subtitle generator is available to start with daily guest usage limits, while signed-in users can process additional videos with credits.

Try the Free Subtitle Generator Online

Upload a file and turn spoken content into polished, platform-ready auto captions.

Generate Subtitles

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