Online Video Cutter

Every long recording usually has a shorter, better video hiding inside it -- a highlight reel of a match, the ten seconds of a lecture worth re-watching, or the one clean take out of a dozen retries. Trimming is how you find and keep that better video, and it's one of the most common editing tasks anyone does, whether they're a content creator prepping a YouTube Short, a student clipping a class recording, or someone who just wants to cut the boring intro out of a phone video before sending it to family. This page gives you a completely free, browser-based online video cutter to trim video online of any format -- MP4, MOV, WEBM, AVI, MKV, and more -- without installing software, creating an account, or uploading your file to anyone's server.

What Does "Trimming a Video" Actually Mean?

Trimming means removing footage from the beginning and/or end of a clip while keeping everything in between untouched. It's different from "cutting," which usually implies removing a chunk from the middle and splicing the remaining pieces back together, and different from "cropping," which changes the frame size instead of the length. A trim tool like this one gives you two markers -- a start point and an end point -- and exports only what falls between them. Because nothing outside that range is ever touched, and because this tool copies the original video and audio streams instead of re-encoding them, the part you keep comes out at exactly the same resolution, bitrate, and quality as the source file. There's no re-compression, no blurring, and no re-rendering involved for a straightforward trim.

Why Trim a Video Instead of Just Leaving It As-Is?

A few extra seconds at the start or end of a clip rarely feel like a big deal in the moment, but they add up in ways that matter. Social platforms like Instagram Reels, TikTok, and YouTube Shorts reward videos that get to the point immediately -- a slow three-second intro before anything happens is often enough for a viewer to scroll past. Shorter, tighter clips also upload faster, take up less storage on your phone or drive, and are easier to send over WhatsApp or email when there's a file-size limit involved. And when you're recording something like a screen tutorial or a Zoom call, there's almost always a bit of dead air at the start ("okay, are we recording now?") and a rambling sign-off at the end that's worth cutting before you share the file with anyone.

How to Trim a Video Online, Step by Step

Using this tool takes under a minute once your file is ready:

1. Choose your file. Click "Choose File" and pick a video from your device, or drag and drop it directly onto the page. You can also paste a direct video URL from the dropdown next to the button.
2. Preview and find your range. Once the video loads, a thumbnail timeline appears below the preview so you can see the whole clip at a glance without scrubbing blindly.
3. Drag the purple handles. Drag the left handle to set where the trimmed video should start, and the right handle to set where it should end. You can also type exact timestamps directly into the two time fields if you need frame-level precision.
4. Preview your selection. Hit the play button to preview just the selected range before committing to it -- it will loop back to the start automatically when it reaches your end point.
5. Save and download. Click "Save." The tool loads a small trimming engine the first time you use it (a one-time download), then processes the cut and automatically downloads the finished file to your device.

Everything Happens in Your Browser -- Nothing Is Uploaded

Most "free" online video tools work by uploading your file to a remote server, processing it there, and sending the result back -- which means your video (and whatever is in it) briefly leaves your device and sits on someone else's infrastructure. This trimmer works differently. It uses WebAssembly, a technology that lets a real, full-featured media engine run directly inside your browser tab at near-native speed. Your video file never leaves your device: it's read locally, trimmed locally, and saved locally. That also means the tool keeps working even if your internet connection is a little unstable partway through, since there's nothing to upload or download except the file you're saving at the end.

Fast, Lossless Trimming vs. Re-Encoding

There are two fundamentally different ways a tool can trim a video, and it's worth understanding the trade-off. The first is stream copying, which is what this tool uses by default: it copies the compressed video and audio data directly from the source file into the new file without decoding and re-compressing it. This is extremely fast (even a very long video trims in seconds) and produces zero quality loss, since none of the original data is re-processed. The trade-off is that a stream-copy cut can only start exactly on a "keyframe" -- a full reference frame that the video format stores every second or two -- so your exact cut point may snap slightly to the nearest keyframe rather than landing on the precise frame you dragged to. For the overwhelming majority of everyday videos (phone recordings, downloaded clips, screen recordings, exported footage), keyframes are frequent enough that this is barely noticeable. The second approach is full re-encoding, which decodes every frame and rebuilds the video from scratch for perfect frame accuracy, at the cost of being much slower and technically re-compressing the video at least once. This tool is built around the first approach specifically so that trimming stays fast and your video quality never degrades.

Common Ways People Use a Video Trimmer

• Cutting a long gameplay or event recording down to a shareable highlight for YouTube, Instagram, or TikTok.
• Removing a countdown, dead air, or a shaky first few seconds from a phone recording before sharing it.
• Trimming a screen recording or webinar down to just the useful segment before sending it to a client or teammate.
• Shortening a video so it fits under a platform's maximum length (e.g. Instagram Reels or a messaging app's upload limit).
• Pulling a specific moment -- a goal, a joke, a mistake -- out of a much longer video file.
• Removing copyrighted intro music or an outro card before re-uploading a clip elsewhere.

Supported Formats and File Handling

The trimmer accepts MP4, MOV, WEBM, AVI, MKV, and most other common video containers your browser can read, and it exports in the same format and container as your original file so there's no unnecessary conversion step. Because everything runs on your own device's processor, very large or very long files (particularly multi-hour recordings) will naturally take longer and use more memory than a short clip -- this is a limitation of doing everything locally in the browser rather than on a powerful remote server, and it's the trade-off for keeping your file completely private. For typical clips -- a few minutes to a few dozen minutes long -- trimming is usually near-instant thanks to the stream-copy approach described above.

More Than Just a Trim: The Full Editing Toolbar

Alongside the core Trim tool, the toolbar above the video preview gives you a small set of editing tools that apply on top of your selected range, all combined into a single export when you hit Save:

• Crop & Ratio -- reframe your video to a fixed aspect ratio (square 1:1, portrait 4:5 or 9:16, landscape 16:9 or 4:3) with a position slider to choose which part of the frame to keep.
• Rotate & Flip -- fix a sideways phone recording with one click, or mirror the frame horizontally or vertically.
• Volume -- turn the audio up to 200% or all the way down, useful for quiet phone recordings or clips you want to mute.
• Speed -- slow footage down for emphasis or speed it up to fit more into a shorter clip, from 0.5x up to 2x.
• Loop -- repeat your trimmed clip back-to-back, handy for short looping content.
• Timer -- stretch or compress your clip to hit an exact target length automatically.
• Image & Text overlays -- add a logo or watermark image, or add on-screen text in any color and size, positioned in any corner or centered.
• Effects -- apply a quick visual look (grayscale, sepia, blur, brightened, or a vintage tone) to the whole clip.

Unlike a plain trim, any of these edits require re-encoding the video (since the frames themselves are being changed), so exports with one or more of these active will take a bit longer than a pure trim and involve a small amount of quality re-compression -- this only applies when you actively turn one of these tools on, so a straightforward trim with nothing else enabled always stays on the fast, lossless path described above.

Choosing the Right Length and Aspect Ratio for Each Platform

Different platforms favor different clip lengths and shapes, and getting this right before you export saves a re-edit later. Instagram Reels and TikTok both favor vertical 9:16 video and perform best under roughly 60-90 seconds for most content types, though both platforms technically allow much longer uploads. YouTube Shorts also uses a vertical frame and caps out around 60 seconds. Standard YouTube videos and most desktop-first content still favor the classic horizontal 16:9 frame, with length driven entirely by the content rather than a platform limit. Square 1:1 video remains a safe middle ground for feeds where you don't know whether the viewer is on mobile or desktop, such as Facebook or X (Twitter). Use the Trim handles to get your target length first, then switch to the Ratio tool if you need to reshape the frame for a specific platform before downloading.