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Video Trimmer

Cut any MP4, WebM or MOV to an exact start and end time, adjust speed, mute audio, and download the clip. No watermark, no upload — it runs in your browser.

Drop your video here

MP4, WebM, MOV — opened locally, nothing uploaded.

Your video never leaves this device.

Trimming a video in the browser means the file never leaves your device — no upload, no wait, no privacy concern. The usual way to do it in a browser is to play the clip into a recorder and save what comes out, which is why so many online trimmers produce something soft and juddery: a recorder only captures what the machine managed to draw, so every frame dropped under load is a frame missing from the file.

This decodes each frame the output needs and hands it straight to the encoder. Nothing is drawn to the screen and nothing depends on timing, so every frame arrives, the picture is the decoder's own rather than a screenshot of it, and the work runs as fast as your machine allows instead of taking as long as the clip does.

Re-encoding still costs a little against the original, as any re-encode does — the Quality setting decides how much. Only a byte-for-byte stream copy is genuinely lossless, and that needs ffmpeg outside the browser. If you have it installed and want a lossless cut, use it; this is the right choice when you would rather not install anything, upload anything, or wait for a server.

How to trim a video

  1. 1. Open your video

    Drop an MP4, WebM or MOV file onto the page, or click Choose video. The file is read in your browser — nothing is uploaded, however large the video is.

  2. 2. Set the trim range

    Drag the start and end handles on the timeline to select the part you want to keep. The preview loops between the handles so you can see exactly what will be in the output.

  3. 3. Adjust speed and audio

    Optionally change playback speed (0.25× to 4×) and mute the audio track if you want a silent clip.

  4. 4. Set the output

    Pick MP4 (H.264) or WebM (VP9), a quality tier, a frame rate, and whether to keep the source resolution or scale it down. An estimated file size updates as you change them.

  5. 5. Download

    Press Trim & Download. The clip is encoded on your device and downloads directly — no waiting for an upload, no watermark.

What you can do

Frequently asked questions

How do I trim a video online for free? +

Drop your video above, drag the handles on the timeline to select the part you want, and press Trim & Download. The clip encodes in your browser and downloads immediately. There is no sign-up, no watermark, and no file size limit — it works on a 2 GB file just as well as a small one.

Is my video uploaded anywhere? +

No. The file is opened locally by your browser and never sent to any server. Trimming happens entirely on your own machine. This matters for dashcam footage, meeting recordings, personal clips — anything you would rather not have in a cloud service.

What video formats does it support? +

MP4, WebM and MOV. Support for HEVC and AV1 depends on the browser and operating system rather than this tool — if a file will not load, converting it to MP4 with H.264 first will fix it. The output is WebM or MP4, whichever encoder is available in your browser.

How precise is the trimming? +

The handles move in hundredths of a second and you can type exact values in the start and end fields. The frame-by-frame export captures each frame at the exact time sought, so the output starts and ends on the frame you chose rather than the nearest keyframe.

Can I change the playback speed? +

Yes. The speed options go from 0.25× (quarter speed, for slow motion) to 4× (for a fast timelapse). A clip trimmed to 60 seconds at 2× plays back in 30 seconds. The output length shown in the panel updates as you change the speed, so you know the result length before encoding.

Can I remove the audio from a video? +

Yes — tick Mute in the Audio section before trimming. The output video has no audio track. Useful for social clips where you want to add your own music, or dashcam footage you want to share without the conversation in it.

Is there a file size or length limit? +

No file size limit, because the file is never uploaded — the browser reads it directly. The practical limit is memory: a very long, high-resolution video decoded to raw frames can fill RAM. For clips over 30 minutes, trim to a shorter selection first.

Will the quality be reduced? +

Not noticeably, and you can make it effectively lossless. Each frame is decoded and re-encoded at the source resolution and the source frame rate, so nothing is dropped and no frame is a screenshot. The bitrate is set from what your own file used rather than from a fixed number: Standard matches the source, High spends about 1.6× it, and Maximum about 2.5×, which is enough that a second generation of compression does not show. Measured on deliberately noisy footage — the hardest case for any codec — High reached 36.6 dB PSNR and Maximum 44.1 dB, where anything above about 40 dB is considered visually indistinguishable from the original. Only a byte-for-byte stream copy is lossless in the strict sense, and that needs ffmpeg outside the browser.

Does it work on a phone? +

The trimming interface works on a phone — drag the timeline handles with your finger, or type exact times. Exporting needs WebCodecs, which Chrome and Edge on Android support, as does recent Safari on iOS. Encoding a long clip on a phone is slower than on a laptop and uses a lot of memory, so trim to a short selection first.

What output format should I choose? +

MP4 (H.264) is the default and the right answer for almost everything — it plays in every video player, messaging app and social platform. Choose WebM (VP9) when you want a smaller file at the same quality and know the destination accepts it, which browsers and most modern platforms do.

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