Trim a Video to Reduce File Size

Shorten a video to bring it under an upload or email size limit without re-compressing it.

无需登录文件保持私密

将文件拖放到此处或点击浏览

MP4, WebM, MOV, AVI 无文件大小限制

浏览文件

你的文件永远不会离开你的设备。所有处理都在你的浏览器中本地进行。

file size tips

📏

Trimming length is the cleanest way to shrink a file — fast mode removes seconds without re-compressing what remains.

⚡

Because fast mode copies the streams, a 30-second cut of a 2-minute clip is roughly a quarter of the size, at full quality.

🎬

Still too big after trimming? Run the result through the video compressor to drop resolution or bitrate.

🔒

No upload means no size cap — trim multi-gigabyte files that conversion sites would refuse.

选择文件

Drop your file into the tool above. It stays entirely on your device — nothing is sent to any server.

处理

The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

下载

Get your result instantly. Nothing is stored after you leave the page — complete privacy.

✓完全免费——永远没有隐藏费用

✓无需账号、邮箱或登录

✓文件永远不会离开你的设备

✓绝无文件大小限制

✓所有输出均无水印

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