Hit a target size
Type a size like 25 MB and the tool re-encodes your video to land near it. Cap the resolution at 1080p or 720p when you need it smaller still.
Submagicは、チームやビジネス向けに魅力的なshort-form ビデオを数秒で作成できる最高のAIツールです。
Compress a video without uploading
Make a big video small enough to share. Set a target size in megabytes and the tool hits it on your device, so nothing is uploaded and there is no waiting on a server.
数分で字幕付きの動画を作成
これらの企業は、Submagic AIキャプションを信頼し、愛用しています。
Common questions about compressing video
How do I compress a video?
Open the tool, drop in your video, set a target size or pick a quality, and compress. When the smaller file is ready, save it. It all happens in your browser, so there is no upload step and no account to create.
Is it free?
Yes. The compressor is free to use, with no sign-up, no trial, and no watermark on the result.
Is my video uploaded anywhere?
No. The re-encode runs on your device with WebCodecs, so the file never leaves your browser and nothing is stored on a server.
How do I get a video under 25 MB for email or Discord?
Type 25 in the target size field and compress. If it still looks soft, cap the resolution at 720p for more headroom, then compress again.
Will compressing reduce quality?
Compression re-encodes the video at a lower bitrate, so a smaller target trades away some detail. You control the balance with the target size, the quality setting, and the resolution cap, so you can keep it sharp or push for the smallest file.
What formats can I compress?
MP4, MOV, WebM, and MKV. The output stays a standard video that plays back the way the source did.
Is there a file size limit?
There is no server limit, because nothing is uploaded. Very large files are bounded only by your device memory, but most clips compress without trouble.
Can I compress a video on iPhone?
Yes. The tool runs in your phone browser, so it works on iPhone and Android with no app to install. Pick your video, set a size, and the smaller file saves to your downloads or files.
Will it add a watermark?
Never. The output is your video at a smaller size, with no watermark and no sign-up.