Crop Video

Crop a video to a square, 9:16 or 16:9 for Instagram, TikTok, Reels or YouTube.

Select a video file

Crop a video to a square, 9:16 or 16:9 — for Instagram, TikTok, Reels or YouTube. Runs in your browser.

點擊選擇，或將檔案拖曳至此

如何 Crop Video

1
Add your video
Drop in an MP4, MOV or WebM clip.
2
Pick an aspect ratio
Square, 9:16, 16:9 or 4:3 — the crop is taken from the centre.
3
Crop and download
Click Crop; the video is re-recorded at the new shape.

Is my video uploaded?+

No. It's cropped by re-recording from a canvas in your browser.

Can I choose where the crop is?+

This version crops from the centre. For an off-centre subject, move it toward the middle in another editor first.

Does it re-encode?+

Yes, in real time — best for short clips. The audio is kept.

Which ratios are there?+

Square 1:1, portrait 9:16, landscape 16:9, and classic 4:3, plus keeping the original.

你們會把我的檔案上傳到伺服器嗎？+

不會——這裡的每個工具都完全在你的裝置上處理檔案，不會向伺服器上傳任何內容。唯一的例外是 AI 工具，它們會把擷取的文字（而非檔案本身）傳送給 Claude 來完成工作。

有檔案大小限制嗎？+

我們沒有人為設下限制，但由於處理過程在你的瀏覽器中進行，非常大的檔案（超過 500MB 或 1000 頁）會受你裝置記憶體的限制，而非我們的限制。