CaptionIt — Download & Caption Any Video

ℹ️ Downloads use cobalt.tools (YouTube, Instagram, X) and tikwm.com (TikTok). Use only for videos you own. If a download fails, install the CORS Unblock browser extension in Chrome.

Paste a video link

Video found

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If download doesn't start, right-click the button and choose "Save link as…"

Load your video

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Click to choose or drag & drop your video

MP4, MOV, WebM — processed entirely in your browser

Preview

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🤖 Auto Captions (AI)

Whisper AI Transcription Generates accurate captions with timestamps from your video's audio using OpenAI Whisper.

OpenAI API Key — stored only in your browser, sent only to OpenAI

Get a key at platform.openai.com → API Keys. Costs ~$0.006/min of audio.

Language

Max chars per caption

Extracting audio...

Manual Captions

💡 Pause the video → type text → click Add at Current Time.

No captions yet — use Auto Caption above or add them manually ↑

Caption Style

Font Size

Position

Text Colour

Background

Font Weight

Box Opacity

Export

Captions are burned in entirely in your browser — nothing is uploaded. Large videos may take a few minutes.

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