OntoCraft
Tools · ontoCut

Cut and join videos
in your browser, no install

A free video editor that runs right in Chrome, with no install or sign-up. Videos are processed on your computer and never uploaded to our server.

Open the editor

Use the latest Chrome or Edge on a PC. No login.

Start editing

What it does

  • Open video (MP4, MOV, WebM), images (PNG, JPG, WebP) and music (MP3, M4A, WAV) by drag and drop
  • Trim, split, reorder, duplicate and delete clips on a single-track timeline
  • Text (caption) boxes: font, size, color, outline, position
  • One background music track: trim, volume, fade in and out
  • Aspect ratios 16:9, 9:16, 1:1
  • Export MP4 (H.264, AAC) without watermarks, 720p or 1080p at 30 fps
  • Autosave and undo, a project list, and save/open project files (.ontocut)

Files never leave your browser

  • Importing, editing and exporting all happen inside this browser (WebCodecs). Videos are not uploaded to our server
  • Edit state and copies of imported files stay in this browser's storage (IndexedDB, OPFS)
  • To continue on another browser or computer, save a project file (.ontocut) and move it

Supported browsers

  • Latest Chrome or Edge on a PC (macOS, Windows)
  • Chrome on Linux may not export audio (AAC)
  • Safari and Firefox open it but recommend Chrome
  • Phones and tablets are not supported

Not yet

  • No automatic captions (speech recognition), filters or color correction, transitions, multiple video tracks or speed control
  • HEVC (H.265) MOV files recorded on phones may not open, depending on the device
  • Very large files (several GB) may hit the browser's storage limit. You will then be asked to pick the original file again

Open-source notices

mediabunny is used unmodified. The Pretendard font is bundled with the editor. The editor screens are in Korean.