Auto Caption Generator & Video Burner
Auto-generate animated subtitles with AI, or upload your existing subtitle file (.SRT, .VTT, .ASS) and video to hardcode captions in seconds. Choose viral styles, customize timing sync, and export watermark-free MP4 videos or download subtitle files directly in your browser.
Burn Existing Subtitles into Video
Already have a subtitle file? Upload your video and subtitle file to sync, apply viral animations, and burn directly into high-res MP4!
Drop video or click to browse
Drop .SRT/.VTT or click to browse
💡 Quick tip: You can select or drag both files together into either box above!
🎨Customize Fonts & Colors▼
クリエイターに選ばれる理由
YouTube、TikTok、動画編集者のための高機能な自動字幕生成ツール。
高精度な音声認識
リップシンクにぴったりの正確なタイミングで単語を分割。
バズる字幕スタイル
単語ごとのバウンスアニメーションで視聴維持率を最大80%向上。
台本からの自動同期
原稿を貼り付けるだけで、自然なテンポのタイムスタンプを自動算出。
SRT・VTT形式対応
Premiere Pro、DaVinci、CapCut、Final Cutにそのまま読み込み可能。
動画への直接焼き込み
字幕付き動画をブラウザ内で直接生成してダウンロード可能。
完全無料 · 透かしなし
課金やクレカ登録は一切不要。
人気の字幕アニメーション
Choose from trending typography presets or customize animations to fit your brand identity.
Hormozi パンチ
High-contrast bold punch designed for high retention on YouTube Shorts & TikTok.
MrBeast ポップ
Heavy 2px black outline with vibrant neon blue bounce for gaming and high-energy content.
シネマティック ボックス
Frosted translucent backdrop box tailored for documentaries, interviews, and brand videos.
ネオン サイバーパンク
Electric cyan and magenta glow effects perfect for music clips, gaming, and tech reels.
カラオケ ウェーブ
Progressive vibrant green highlight wave that guides the viewer word-by-word.
ミニマリスト
Understated elegance for tutorials, podcasts, and corporate presentations.
他社ツールとの比較
InVideo、CapCut、Kapwingなどの有料ツールとの違いをご確認ください。
| 機能 | Subtitle Generator Free | Caption X | CapCut Pro | Kapwing |
|---|---|---|---|---|
| 永久完全無料 | ✓ | Paid Tier for Pro | Paid Pro | Watermarked |
| 動画に透かし（ウォーターマーク）なし | ✓ | Watermark on Free | ✕ | ✕ |
| アカウント登録不要 | ✓ | ✓ | ✕ | ✕ |
| SRT・VTTエクスポート対応 | ✓ | ✓ | ✓ | Paid Only |
| 台本からの自動字幕同期 | ✓ | ✕ | ✕ | ✕ |
| 単語バウンスアニメーション | ✓ | Cloud Audio Upload | App Install | Cloud Queue |
| ブラウザ内動画レンダリング | ✓ | ✓ | SRT Only | Paid Only |
世界中の50万人以上のクリエイターが利用
100%クライアント側処理：メディアは外部サーバーに送信されず安全です。
Frequently Asked Questions
Everything you need to know about generating, styling, and exporting subtitles for free.
Is Subtitle Generator Free completely free to use?+
Yes, 100% free with no hidden paywalls, no credit card requirements, and no watermarks on your videos or subtitle files.
How do I generate subtitles from an existing script or text?+
Simply click the "Script to Subtitles" tab in our studio, paste your raw transcript or lyrics, adjust your preferred reading speed (WPM), and click "Auto-Generate Subtitle Cues". Our algorithm will segment the sentences into optimal lines and calculate exact timestamps automatically.
Can I burn the animated subtitles directly into my video file?+
Yes! In the Live Video Studio tab, you can customize the caption animations, positions, and fonts, then click "Export Video (Burn-In Subtitles)" to render and download your video with hardcoded subtitles directly in your browser.
What subtitle export formats are supported?+
You can export industry-standard .SRT (SubRip) files, .VTT (WebVTT) files for web players, and .TXT plaintext transcripts, as well as copy timestamped cues directly to your clipboard in one click.
Is my audio and video data kept private and secure?+
Absolutely. Subtitle Generator Free operates client-side inside your browser sandbox. Your media files and scripts are processed locally and are never stored or uploaded to third-party databases.
What video aspect ratios are supported for social media?+
Our studio supports 9:16 vertical (TikTok, Instagram Reels, YouTube Shorts), 16:9 widescreen (YouTube, TV, Presentations), and 1:1 square (Instagram feed, LinkedIn, Facebook).