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Your files are never uploaded. Everything is processed in your browser and nothing is stored.

Split & Trim Video

Split a long video into equal parts, cut it at the times you choose, or trim out just the clip you need. By default nothing is re-encoded, so quality is unchanged and it takes seconds. Your file is never uploaded; everything runs in your browser.

Handy for messaging apps and social networks with length limits.
Minutes:seconds or hours:minutes:seconds, separated by commas. Three times make four parts.

Fast cuts move to the nearest keyframe, usually by a few seconds at most.

Choose a video, pick how to split it, then press Split.

Done

    How to split or trim a video

    1. Press Choose a video. Its length, resolution and codec appear (the first time, the video engine of about 32 MB downloads).
    2. Pick how to split. A preview below shows the parts as you type.
      • N equal parts: a 1-hour video in 3 parts → 20 minutes each
      • Every N minutes: a 25-minute video every 10 minutes → 10, 10 and 5 minutes
      • Cut at chosen times: "1:30, 5:00" → 0:00–1:30, 1:30–5:00, 5:00–end
      • Trim out one clip: start 1:00, end 2:30 → just that minute and a half
    3. Press Split video, then Save each part or use Download all as ZIP.

    Fast cuts vs. exact cuts

    Video is compressed as full pictures (keyframes) every few seconds plus the changes in between. Cutting without re-encoding means each part must start on a keyframe, so a fast cut moves slightly, usually by a few seconds at most, to the nearest keyframe. In exchange the quality is identical and even an hour of video takes seconds.

    MethodWhere it cutsQuality and speed
    Fast (default)The keyframe near your timeIdentical to the original, seconds
    ExactExactly at your timeRe-encoded to H.264 MP4, slow (can take longer than the video)

    The result list shows where each part actually starts and ends. To put parts back together, use Merge Videos; parts from the same video join without quality loss.

    Good uses

    FAQ

    Is my video uploaded?

    No. Videos are never sent to a server; they are processed in your browser. Only the video engine (ffmpeg.wasm) downloads once from a public CDN.

    How large can the video be?

    The original is read only where needed, but the parts are built in your device's memory. 1–2 GB is comfortable on a computer, a few hundred MB on a phone.

    Does it work with AVI?

    Yes. Fast cuts keep AVI; exact cuts produce MP4. Browsers can't play AVI directly, so open the parts in a video player.

    Sources

    Merge Videos

    Join MP4, AVI and MOV videos into one in the order you choose, without re-encoding when they match. Processed in your browser, never sent to a server.

    No upload · runs in your browser

    Merge MP3

    Join several MP3 files into one in the order you choose, without quality loss when they share a format. Processed in your browser, never sent to a server.

    No upload · runs in your browser

    Subtitle Converter

    Convert SRT, VTT and SMI subtitles and shift their timing or fix frame-rate drift. Processed in your browser, never sent to a server.

    No upload · runs in your browser