从音频和文案一键生成爆款字幕。
自动语音转文字、文案自动对齐、热门动态字幕特效（Hormozi、MrBeast、K歌跳动），免费导出 SRT、VTT 或压制高清 MP4 视频。
Upload Video & Subtitle File
Have a video file? Upload your video and subtitle file to sync, style, and burn them into high-res MP4 with zero watermark.
Don't have subtitles yet? Cloudflare Whisper AI can automatically extract and generate timestamped subtitles from your video audio.
音频/视频转字幕
支持 MP3, WAV, M4A, MP4, MOV, WEBM · 100% 本地浏览器隐私保护
粘贴文案剧本或歌词
智能断句算法将文案分割为适于阅读的字幕长度，并自动计算精准时间戳。
实时视频与字幕预览
sync.desc
为什么创作者选择 Subtitle Generator Free
为短视频创作者、B站UP主、播客打造的高效字幕工具。
高精度语音识别
先进声学算法精准识别每个词的起止点，与口型完美同步。
爆款动态大字特效
逐字跳动高亮特效提升视频完播率达80%以上。
文案智能时间戳对齐
直接粘贴文案，算法自动计算自然语速并排版字幕。
通用 SRT 与 VTT 格式
无缝兼容剪映、Premiere Pro、Final Cut 及 DaVinci Resolve。
浏览器内直接压制视频
无需复杂软件，直接在网页端导出压制好字幕的高清视频。
100% 永久免费 · 无水印
无需注册登录，无需信用卡，导出无任何水印标记。
热门爆款动态字幕样式
Choose from trending typography presets or customize animations to fit your brand identity.
Hormozi 爆款大字
High-contrast bold punch designed for high retention on YouTube Shorts & TikTok.
MrBeast 描边跳动
Heavy 2px black outline with vibrant neon blue bounce for gaming and high-energy content.
电影级磨砂黑框
Frosted translucent backdrop box tailored for documentaries, interviews, and brand videos.
赛博朋克霓虹发光
Electric cyan and magenta glow effects perfect for music clips, gaming, and tech reels.
K歌渐变逐字亮起
Progressive vibrant green highlight wave that guides the viewer word-by-word.
极简干净
Understated elegance for tutorials, podcasts, and corporate presentations.
Subtitle Generator Free 对比其他工具
查看我们与 InVideo、CapCut 和 Kapwing 等付费工具的对比优势。
| 特性 | Subtitle Generator Free | Caption X | CapCut Pro | Kapwing |
|---|---|---|---|---|
| 100% 永久免费 | ✓ | Paid Tier for Pro | Paid Pro | Watermarked |
| 视频无任何水印 | ✓ | Watermark on Free | ✕ | ✕ |
| 免登录免注册即用 | ✓ | ✓ | ✕ | ✕ |
| 免费包含 SRT / VTT 导出 | ✓ | ✓ | ✓ | Paid Only |
| 文案剧本自动对齐时间轴 | ✓ | ✕ | ✕ | ✕ |
| 逐字跳动高亮动画 | ✓ | Cloud Audio Upload | App Install | Cloud Queue |
| 网页直接压制视频导出 | ✓ | ✓ | SRT Only | Paid Only |
全球超过 500,000+ 视频创作者的信赖之选
100% 浏览器本地隐私保障：您的音视频与文案完全在本地处理，绝不上传至第三方服务器。
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).