Auto-edit your videos to the beat, free in your browser

Pick a song, drop in your clips, and Beat Cut builds a beat-synced edit ready for Instagram Reels, TikTok or YouTube Shorts. There is no upload, no account and nothing to install — your footage never leaves your device.

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What Beat Cut does

Beat Cut is a free automatic video editor that cuts your footage in time with your music. It analyses the track to find the strongest beats, looks at your clips to avoid cutting across scene changes that are already there, and assembles a finished vertical reel — all locally, using WebAssembly, inside the browser tab you already have open.

How it works

1. Choose a song. Use one of the bundled tracks or load your own audio file.
2. Add your clips. Select as many videos as you like from your phone or computer.
3. Analyse. Beat Cut detects the beats, scores your footage and picks which moment to cut on.
4. Adjust and export. Add or remove cuts on the timeline, then render the finished video and save it.

No footage to hand? The editor can load a set of demo clips and a track for you, so you can go from opening the page to a finished edit in a couple of taps.

Why it is different

• Nothing is uploaded. Beat detection, scene detection, cutting and encoding all run on your own machine. We never receive your media.
• No account, no install. Open the page and start editing. It works in the browser on a phone or a laptop.
• Scene-aware cuts. Cuts land on musical impacts while avoiding the scene changes already present in your clips.
• Manual control. Every cut is editable on a timeline, so you can add, move or remove them by hand.
• Export presets. Vertical for Reels, TikTok and Shorts, plus square and landscape, at resolutions up to 4K.

Frequently asked questions

Is Beat Cut free?

Yes. You can make and export as many edits as you like at no cost. Free exports carry a small watermark. A one-time Pro purchase removes it; there is no subscription.

Do my videos get uploaded anywhere?

No. The entire editing pipeline runs inside your browser, so your video and audio files are read straight from your device and processed in memory. When you close the tab they are gone. See the privacy policy for the detail.

Do I need an account?

No. Beat Cut has no sign-up and no login, so there is no name, email or password to give.

Can I use my own music?

Yes. Load any audio file from your device, or start from one of the tracks bundled with the editor. You are responsible for having the rights to any music you add to a video you publish.

Does it work on iPhone and Android?

Yes. Beat Cut runs in a mobile browser as well as on a desktop. Rendering uses your device's own processor, so a newer phone or computer will finish a long edit faster.

Is there a limit on file size or length?

Edits can run from a few seconds up to the full length of the song. Because everything is held in browser memory, very large sources — roughly 500 MB and above — may run out of memory on some devices.

How do I remove the watermark?

Buy Beat Cut Pro once, then paste the license key into the box in the editor's footer. The unlock is stored on that device and every later export renders without a watermark.