1
Select your MP4 video
Click or drag your MP4 file into the upload area above.
- The tool only accepts MP4 video files
- Your file must be smaller than 50 MB, and the trimming process will time out if it takes longer than 90 seconds to complete
Video Trimmer
Trim the timeline of a local MP4 file in your browser without uploading it.
No installation
Fast processing
Browser friendly
Privacy-aware
Features
Trim video clips with precise start and end time selectors directly in your web browser
Local in-browser processing using HTML5 video and WebCodecs — zero server uploads
Interactive timeline preview with real-time video scrubbing and playback controls
Exports standard MP4 video files with preserved audio and video synchronization
Optimized for mobile smartphones (iPhone, Android) and desktop web browsers
Free to use with no watermarks, account signups, or software installations required
How It Works
2
Choose your trim points
Use the range sliders to set your start and end times, or type the exact seconds for precision up to 0.01 seconds. Click 'Play selection' to preview your trimmed clip.
- The minimum trim length is 0.1 seconds
- You can preview your selected segment before committing
3
Trim and download
Click the 'Trim video' button. Once processing is complete, your new trimmed MP4 video will be ready to download.
- Your video is processed securely in your browser
- The trimmed video retains the MP4 format and preserves the audio
Common Use Cases
Social Media Reel & Story Highlights
Trim longer video recordings into short 15 to 60-second clips optimized for TikTok, Instagram Reels, and YouTube Shorts.
Removing Unwanted Intros & Outros
Cut out dead air, setup delays, or awkward endings from presentation recordings and screen captures.
Extracting Key Moments & Highlights
Isolate specific segments from sports games, webinars, or family video recordings for easy sharing via messaging apps.
Tips & Best Practices
Precision Trimming
You can type precise timestamps into the start and end boxes (e.g., 12.35) for exact precision up to 0.01 seconds.
Completely Private
All video trimming happens directly in your browser. Your MP4 video is never uploaded to any server, ensuring complete privacy.
Keep Your Audio
The tool preserves the original audio track from your video during the trimming process.
Frequently Asked Questions
How do I trim a video online?
Upload your video file, adjust the start and end handles on the timeline, preview the selected segment, and download your trimmed MP4 file.
Is my video file uploaded to an external server?
No. Video trimming runs 100% locally in your web browser using client-side video APIs; your video never leaves your device.
What video formats are supported for trimming?
The tool supports standard web video formats including MP4, WebM, and MOV supported by your browser.
Does trimming reduce video clarity or quality?
The video is re-encoded at standard high-definition parameters to preserve visual clarity while ensuring accurate timeline cutting.
How can I reduce the trimmed video file size further?
After trimming, you can run the exported clip through our Video Compressor tool to optimize its bitrate for quick sharing.