Guides4 min read
Trimmed Video Bigger Than the Original? Why
Why a trimmed video can end up larger than the original, with a measured example, and three fixes: lower the resolution, skip re-encoding, or compress.
Trim video
Cut a video down to the exact clip you need — free, instant, and private. Nothing leaves your device.
Drop a video here, or click to browse
MP4, MOV, WebM, MKV, or AVI — up to 2GB
Everything you need to trim video fast
Frame-accurate range slider
Drag two independent handles on the timeline to set your exact start and end point, down to a tenth of a second.
Live preview while you drag
The video preview jumps to your start handle as you drag, so you can see exactly where the trimmed clip will begin.
Works with your existing format
Drop in MP4, MOV, WebM, MKV, or AVI — no need to convert first. The trimmed result is saved as a widely-compatible MP4.
Instant download, no waiting on uploads
Because there's no upload step, trimming starts the moment you press the button — no queue, no server-side processing time.
Private by design
Your video never leaves your device. PixelTools runs entirely in your browser using ffmpeg.wasm — zero server uploads, zero data stored.
Three steps to a trimmed clip
- 1
Upload your video
Drag and drop a video onto the page, or click to browse. Supports MP4, MOV, WebM, MKV, and AVI files up to 2GB.
- 2
Drag the range handles to your clip
Use the two-handle timeline slider to pick the exact start and end point of the section you want to keep.
- 3
Download your trimmed video
Your clip is cut instantly in your browser. Download the result as MP4. Nothing is uploaded to any server — your file stays on your device.
Built for anyone who works with video
Whether you are cutting a highlight for social media, sharing one moment from a screen recording, or removing dead space from a clip — PixelTools trims it in your browser in seconds.
Social media clips
Cut a long recording down to the exact highlight you want to post, without opening a full video editor.
Sharing a specific moment
Trim a screen recording or camera clip to just the relevant part before sending it to a coworker or friend.
Students and educators
Cut lecture recordings and tutorial videos down to the section that matters, for faster review or sharing.
Removing dead space
Trim off a shaky intro, a silent pause, or extra footage at the end of a clip before compressing or uploading it elsewhere.
Frequently asked questions
Is PixelTools video trimmer free?
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Yes, completely free with no limits. Trim as many videos as you want, as often as you want. No subscription, no trial, no account required.
Are my videos uploaded to a server?
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No. PixelTools trims videos entirely in your browser using ffmpeg.wasm. Your files never leave your device — there is no server upload, no cloud processing, and no data stored anywhere.
What video formats can I trim?
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PixelTools accepts MP4, MOV, WebM, MKV, and AVI as input. The trimmed output is always saved as MP4 for the widest compatibility across phones, editors, and platforms.
How precise is the trim?
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The range slider lets you set start and end points to a tenth of a second. Trimming re-encodes the clip so the cut lands on the exact point you chose, rather than snapping to the nearest keyframe like a simple stream-copy cut would.
Will trimming reduce my video's quality?
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PixelTools re-encodes the trimmed section at a high-quality setting (CRF 23), which is visually lossless for almost all footage. The trimmed clip keeps its original resolution.
What is the maximum file size I can trim?
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PixelTools can handle video files up to 2GB. Since only the section between your start and end handles needs to be re-encoded, trimming is often quicker than a full re-encode of the same file — actual time still depends on your device's performance.
Can I trim a video to keep only the middle section?
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Yes. Drag the left handle to your desired start point and the right handle to your desired end point — everything before the start and after the end is removed, keeping only what's between them.
How is this different from other online video trimmers?
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Most online video trimmers upload your file to a server for processing, which is slow for large files and means your video leaves your device. PixelTools trims everything locally in your browser with no upload and no usage limits.
From the blog
Tutorials4 min read
How to Trim a Video in Dropbox (Step by Step)
Open the video on dropbox.com, click Edit, set the start and end, then save. Limits: under 1 GB and 10 minutes. Longer or bigger? Trim it elsewhere.
Guides6 min read
Trim, Crop & Speed Up Video (No Software)
Cut a clip down, reframe it for vertical, or change its speed — all in your browser, with no upload and no account. A walkthrough of PixelTools' Video Trimmer, Video Cropper, and Video Speed Changer.
Guides5 min read
Compress Video to 10MB: How Long a Clip Fits
How long a video can be and still fit in 10MB, with the bitrate math behind it, and how to compress to exactly 10MB in your browser.
Trim your video now
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