What is Video Cutter Online (video-cutter-js.com)?

Updated

Video Cutter Online is a free browser-based video editing tool that runs entirely on your device using HTML5 and JavaScript. It handles cutting, converting, compressing, resizing, cropping, rotating, and mirroring, and because files are processed locally rather than uploaded to a server, it's a reasonable choice when you want to trim or reformat a video without installing software or handing the file to a third party. It works best for common formats like MP4, WEBM, and MOV, and for edits that don't require multi-track timelines or advanced effects.

What you can do with it

The site groups its tools under a single "Video Cutter & Converter & Compressor" interface, with a tab for each operation:

  • Cut — set a start and end point to extract a segment.
  • Convert — change the output container and codec (see the format table below).
  • Compress — reduce file size by adjusting resolution, frame rate, and bitrate.
  • Resize — set a new resolution.
  • Crop — define a rectangle using starting X/Y coordinates plus width and height.
  • Rotate — turn 90° clockwise or counterclockwise.
  • Mirror — flip horizontally or vertically.

All of these share the same output settings panel, so you choose your format once and apply whichever edit you need.

How it works (and why that matters)

The tool uses HTML5 and JavaScript to process video directly in the browser. According to the site, video files do not need to be uploaded to a server, which is the main privacy argument for using it over a cloud converter. In practice this means:

  • Your file stays on your machine during processing.
  • There's no upload wait, so speed depends on your device rather than your connection.
  • Very large files or long clips may be limited by your browser's available memory.

Supported input formats

The site lists support for the following video formats:
MP4 WEBM MOV FLV
3GP M4V MPG MPEG
MKV AVI WMV MV
DV ASF 3G2

Output options

When you export, you can choose from these containers: MP4, AVI, MPG, MOV, FLV, 3GP, WEBM, MKV, WMV, GIF, plus presets labeled Apple Video and Android Video.

Additional output controls include:

  • Video encoder: H.264 or MPEG-4
  • Audio encoder: MP3 or AAC
  • Audio quality: 48k to 256k
  • Audio sample rate: 8000 to 48000 Hz
  • Audio channel: Mono or Stereo
  • Resolution presets: from Mobile (320x240) up to HD 1080p (1920x1080), plus DVD and TV sizes
  • Frame rate: 25p, 30p, or 60p depending on preset
  • Video bitrate, resolution, and fps fields for manual control

Who it's for

This tool fits quick, single-clip tasks: trimming a recording, shrinking a file before sending it, converting a format your player doesn't recognize, or cropping out a border. If you need transitions, captions, multiple tracks, or frame-accurate color work, you'll want a full editor instead.

How to use it

  1. Open the video file — either click to choose a file or drag it into the drop zone.
  2. Preview the clip to find your edit points.
  3. Pick the operation tab you need (Cut, Convert, Compress, Resize, Crop, Rotate, or Mirror).
  4. Set your output format and any encoder, quality, resolution, or bitrate options.
  5. Start the process and save the resulting file.

The site describes this as a four-step flow, with the first step being to open the file and confirm it's in a supported format.

Things to check before relying on it

  • Browser memory: since processing is local, a long or high-resolution video can stall or fail on a low-memory device. Test with a short clip first.
  • Format support: the listed formats cover most consumer video, but unusual codecs inside a supported container may still fail.
  • No account needed: the page shows no pricing links or payment platforms, and it presents itself as free — but nothing on the page guarantees unlimited use or future availability, so keep your original file until you've confirmed the output.