AI caption generator — captions that look good, in seconds.
Free captions and subtitles for any video. What’s said is turned into text, timed to every word. Pick a style, fix any word, and export an MP4 or SRT file — right in your browser.
- Lightning fast
- No install
- No watermark
- Private
How to add subtitles to a video
- 1UploadDrop a video, audio or SRT file. AI transcribes the speech in 100 languages.
- 2Edit & styleFix any word, pick a caption style, or translate the subtitles.
- 3ExportDownload the captioned MP4, or SRT, VTT and TXT subtitle files.
Styles people stop scrolling for
Start from a ready-made look and make it yours. What you see in the preview is exactly what you export.
- 8 free styles, 22 with Pro
- Karaoke, word highlight, bounce and morePRO
- AI keyword highlightsPRO
- Your own fonts and saved stylesPRO
Add a hook title that stays on screen
Put a title on your video, like “3 tips for beginners”, so people know what they’re watching from the first second.
- Up to 3 texts per video
- The whole video, the first seconds, or set times
- Safe-zone check for TikTok, Reels and Shorts
- Colored wordsPRO
Every word, right on time
Speech is turned into text and each word is timed to the audio, so captions appear exactly when they’re spoken.
- 100 languages, detected automatically
- English and Chinese mixed in one sentence
- Fix any word, or import your own SRT
Hey, welcome back to the channel
Here’s how to caption any video
in just a few seconds
Happy 中秋节 to everyone watching
Translate subtitles into any language
Translate your captions in one click, or show two languages at once for learners and viewers abroad.
- Translate into 100+ languages, free
- Bilingual captions, two lines at oncePRO
- Arabic, Hebrew and other right-to-left scripts
Burn in captions or download SRT
Burn the captions into your video, or download subtitle files for YouTube, Premiere, CapCut and any other editor.
- Free MP4 export in 1080p, no watermark
- Up to 4K on ProPRO
- SRT, VTT and TXT files
- Your video never leaves your device
Why add captions to your videos?
people worldwide live with disabling hearing loss. Captions let them follow every word.
of US adults under 30 prefer watching with subtitles on — even in their own language.
“Captions are provided for all prerecorded audio content in synchronized media…”
Level A — required for accessible video.
Simple pricing
Free
$0
Free account
- Edit videos up to 90 minutes
- Export videos up to 3 minutes
- 30 minutes of captions a month
- No watermark, 1080p export
- 8 caption styles, any font and color
- Text on video, like hook titles
- SRT, VTT and TXT downloads
- Upload audio or SRT files
- Translation into 100+ languages
Pro
$4.92/month
Billed $59 yearly · Cancel anytime
- Everything in Free, plus
- Videos up to 90 minutes
- Unlimited AI captions
- Exports up to 4K
- All 22 styles: karaoke, word highlight and more
- Bilingual captions
- AI keyword highlights
- Custom fonts and saved styles
Frequently asked questions
How do I add subtitles to a video automatically?
Upload your video above. AI transcribes the speech, times every word and turns it into captions. Check the text, pick a style, then export a captioned MP4 or download an SRT file.
Is it free?
Yes, with no watermark. You can caption and edit any video up to 90 minutes for free. A free account exports videos up to 3 minutes long, with 30 minutes of captions a month, as MP4 up to 1080p without a watermark. It includes 8 caption styles, SRT, VTT and TXT downloads and free translation into 100+ languages. Pro gives you unlimited captions on videos up to 90 minutes, all 22 styles with word animations such as karaoke and word highlight, bilingual captions, exports up to 4K, AI keyword highlights, custom fonts and saved styles. See what’s included in the free subtitle generator.
How does it compare with other AI subtitle generators?
It’s a caption tool, not a full video editor: CapCut, VEED and Descript do more editing. What it adds is a free plan with no watermark, SRT, VTT and TXT files and free translation. See how 11 AI subtitle generators compare.
Is my video private?
Yes. Your video never leaves your device — captions are rendered in your browser. Only the audio track is sent for transcription, and we never store your video or audio.
Can I use my own SRT file?
Yes. Import an SRT or VTT, restyle it and burn it into your video, or edit and convert it to another format.
Which languages are supported?
Transcription works in 100 languages with automatic detection. Translation (free) also covers 100+ languages, and bilingual captions (Pro) show two at once.
Does it work for TikTok, Reels and YouTube Shorts?
Yes. Captions are drawn at the size of your video, so vertical 9:16 clips work just like 16:9 YouTube videos, and they start clear of each app’s buttons. See the Instagram Reels safe zone for each app. You can also add a hook title that stays on screen.
How many characters per line should captions have?
It depends on the frame. For landscape film and TV, Netflix allows up to 42 characters per line and two lines per subtitle. The BBC sizes online subtitles by width instead: up to 68% of a 16:9 frame and 90% of a vertical 9:16 one. As the BBC puts it, lines are constrained by the width of the region in which they are displayed.
Our styles keep 16–34 characters per line and wrap to the width of your video, so vertical clips get short, punchy lines.
What’s the difference between burned-in captions and an SRT file?
Burned-in (open) captions are drawn into the video itself, so they show on every platform in the style you picked. An SRT file is a separate subtitle track that viewers can turn on or off on YouTube and other players; it keeps the text and timing but not the style. YouTube accepts both SRT and WebVTT, the W3C’s subtitle format.
