Free · runs in your browser

Long videos in.
Shorts out.

Paste a YouTube link and get a ranked list of clips that make sense on their own, reframed to 9:16 with word-by-word captions. Or give it a topic and get a finished Short.

No sign-upYour files never leave your deviceBring your own free API keys
94 / 100virality score
CLIP 1 · 0:42
WAITFORIT
9:16captions burned in
Two tools

Pick how you want to make Shorts

Both run entirely in the page. Add your keys once and they work in both.

From an existing video

Clip a video

Find the moments worth posting from a long video.

  • AI watches your YouTube link and picks self-contained clips
  • Virality score, hook, reason and a ready-to-post caption
  • Tweak times, layout and speaker position per clip
  • Export 9:16 with highlighted word captions
From a topic

Create a Short

Go from one sentence to a finished, uploadable Short.

  • Script, title, description and tags written for you
  • AI voiceover and matching vertical b-roll
  • Captions, optional background music at −20 dB
  • Upload straight to your YouTube channel
How it works

Three steps, no editing timeline

Everything after the AI call happens locally on your machine.

Add your keys

Paste a free Gemini key (and Pexels for b-roll). They stay in your browser.

Drop in a link or topic

The AI finds the best moments or writes the script, with timing and captions.

Render & post

Your browser records each clip in 9:16. Download it or upload to YouTube.

Built with
GeminiClaudePexelsYouTube Data APICanvas & MediaRecorderWeb Audio
FAQ

Good to know

Is it really free?

The site is free. You use your own API keys, and Gemini has a free tier that covers light use. Pexels is free. A typical clip analysis costs a fraction of a cent to a few cents depending on video length.

Where are my keys and videos stored?

Keys live in this browser's local storage and are sent only to the provider they belong to (Google, Anthropic, Pexels). Video files you choose are processed locally and are never uploaded to this site.

Why do I need to choose a video file to export?

Browsers can't download YouTube videos, and this site doesn't. Analysis works from the link; export renders from a file you provide, so use videos you own or have permission to use.

Why does rendering take as long as the video?

Rendering is recorded in real time from a canvas in your browser. Keep the tab visible until it finishes.

How accurate are the clip boundaries and captions?

The AI's timestamps are approximate, so you can nudge the start and end of each clip. Caption timing within a line is estimated, so expect small drift.

API keys

Stored only in this browser (). Shared by both tools. Clear them any time.
Get a free key
Get a free key
In Google Cloud create an OAuth "Web application" client, enable the YouTube Data API v3, and add as an authorized JavaScript origin.