Why does it take as long as the video itself?

A browser has no way to re-assemble a video. Instead it plays it back and redraws it into a smaller frame as it goes, so a one-minute video takes about a minute. This is not a workaround but the only route available in a browser, which is why the remaining time is shown plainly.

Where does the video get uploaded?

Nowhere. The whole point is that footage with your face or your home in it never has to go to an unfamiliar site.

How much smaller does it get?

It depends on the original. Phone footage usually shrinks a lot; something already well compressed can grow instead. When that happens it says it grew rather than claiming it shrank.

Should I reduce the frame size or the quality first?

Frame size has the larger effect on file size. For something you will only watch on a phone, halving it still looks fine. For a big screen, leave the size and lower the quality.

Why is it saved as webm?

It picks the most widely supported of the formats a browser can capture. webm opens in current browsers and in most editing tools.

Compress video

Name: 영상 용량 줄이기
Author: KarmoLab

Pick size and quality · estimated size · check before saving · no upload

영상 용량 줄이기

영상 용량을 줄입니다. 해상도와 화질을 고르고, 영상이 브라우저를 벗어나지 않습니다

영상을 끌어다 놓거나 눌러서 고르세요

영상은 브라우저 안에서만 열립니다 — 어디에도 올리지 않습니다.

Compress a video so it fits through email or a messenger. Pick the frame size and quality; the video never leaves your browser.

How to use it

Add a video file
Pick the frame size and quality
Check the estimated size
Hit Compress and wait
Watch the result, then download

Common questions

Why does it take as long as the video itself?: A browser has no way to re-assemble a video. Instead it plays it back and redraws it into a smaller frame as it goes, so a one-minute video takes about a minute. This is not a workaround but the only route available in a browser, which is why the remaining time is shown plainly.
Where does the video get uploaded?: Nowhere. The whole point is that footage with your face or your home in it never has to go to an unfamiliar site.
How much smaller does it get?: It depends on the original. Phone footage usually shrinks a lot; something already well compressed can grow instead. When that happens it says it grew rather than claiming it shrank.
Should I reduce the frame size or the quality first?: Frame size has the larger effect on file size. For something you will only watch on a phone, halving it still looks fine. For a big screen, leave the size and lower the quality.
Why is it saved as webm?: It picks the most widely supported of the formats a browser can capture. webm opens in current browsers and in most editing tools.

Other tools

Stays on your device What you enter is handled inside your browser only — nothing is stored or sent anywhere.

This tool page states where what you enter goes — see the badge above. All tools · KarmoLab · Who made this · Built with AI. View source