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Video Trimmer & Cutter

Cut a video to any start and end time with zero quality loss

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100% private. Your file is processed locally in your browser with WebAssembly — it is never uploaded to a server, stored, or seen by anyone.

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The ClipTools Video Trimmer lets you cut a video down to a chosen start and end time and download the result with zero quality loss. Because it copies the original video and audio streams instead of re-encoding them (ffmpeg's -c copy mode), the trimmed clip keeps the exact same codec, resolution, bitrate, and quality as your source file, while finishing in seconds rather than minutes.

Everything runs locally in your browser using ffmpeg compiled to WebAssembly, so your video is never uploaded to any server. It is built for anyone who needs to quickly grab a section of a clip, remove dead space at the start or end, or split out a highlight, including content creators, students, teachers, and social media managers, with no account, no software install, and no watermark.

Why use this tool

Zero quality loss

Stream copy (-c copy) keeps the original codec, resolution, and bitrate untouched, so your trimmed clip looks identical to the source with no re-encoding artifacts or generation loss.

Near-instant trimming

Since frames are copied rather than re-encoded, even hour-long videos are cut in seconds instead of the minutes a re-encoding editor would take.

Completely private

Your video is processed locally in your browser and never uploaded, making it safe to trim private, sensitive, or pre-release footage.

No watermark or signup

Download clean, unbranded clips with no account, no install, and no watermark stamped over your video.

How to use the Video Trimmer & Cutter

  1. Upload your video

    Drag and drop your video file onto the upload zone or click to browse and select an MP4, MOV, MKV, WebM, or other supported file from your device.

  2. Set the start time

    Enter the start time (for example 00:00:15) to mark where the trimmed clip should begin and skip any unwanted footage at the beginning.

  3. Set the end time or duration

    Enter the end time or the clip length to define where the cut ends, keeping only the section between your chosen start and end points.

  4. Trim the video

    Click Trim Video to cut the clip in your browser using lossless stream copy, with no re-encoding and no upload.

  5. Download the result

    Download your trimmed clip in the same format and quality as the original, ready to share or use immediately.

Popular use cases

  • Cutting a 30-second highlight out of a long gameplay or webinar recording to share on social media
  • Removing dead air, silence, or the setup at the start and end of a screen recording
  • Trimming a phone-shot clip down to the exact moment before posting it to Instagram, TikTok, or WhatsApp
  • Splitting a single recorded lecture or meeting into a shorter, focused section to send to others

Frequently asked questions

Is this video trimmer free to use?
Yes, the ClipTools Video Trimmer is completely free with no signup, no watermark, and no limit on how many videos you can trim. There are no paid tiers required to access the trimming feature, and the output has no added branding.
Is my video uploaded to a server when I trim it?
No. Your video is processed entirely in your browser using ffmpeg compiled to WebAssembly, so the file never leaves your device and is never uploaded to any server. This makes it safe for confidential, personal, or unreleased footage.
Does trimming reduce the video quality?
No. The trimmer uses stream copy (ffmpeg's -c copy mode), which copies the original video and audio data without re-encoding. The trimmed clip keeps the exact same resolution, codec, bitrate, and quality as the source file, with no generation loss.
What video formats can I trim?
It supports common formats including MP4, MOV, MKV, WebM, AVI, and FLV. The output is saved in the same container as the input, so trimming an MP4 produces an MP4 and trimming a MOV produces a MOV, preserving the original codecs.
How fast is trimming compared to other editors?
Very fast. Because no re-encoding happens, trimming is near-instant and usually completes in a few seconds even for long videos, since ffmpeg only copies the selected stream segment rather than re-processing every frame.
Is there a file size limit?
You can trim videos up to about 2 GB. Larger files depend on your device's available memory, since all processing happens in your browser's RAM rather than on a remote server. Desktop browsers handle big files better than mobile.
Why does my trim start or end slightly off from the exact second I set?
Stream copy can only cut at keyframes, so the start and end points may snap to the nearest keyframe rather than the exact millisecond. This is the trade-off for lossless, instant trimming; if you need frame-accurate cuts, a tool that re-encodes is required.
Can I trim a video on my phone?
Yes. The trimmer runs in any modern mobile browser like Chrome or Safari, with no app to install. Processing uses your phone's memory, so very large or long videos may work better on a desktop computer.

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