画像切り抜き
デバイス上で処理 · アップロードなし画像を正確に切り抜き・リサイズ。
画像を切り抜く方法
- 切り抜きたい画像ファイルをドラッグまたは選択します。
- 画像上でドラッグして切り抜き範囲を指定します。
- 「切り抜き」ボタンを押して結果をダウンロードします。
Cropping keeps the part of a photo you want and removes unwanted margins or background. With aspect-ratio presets (1:1, 16:9, 9:16), use-case presets for Instagram and YouTube, a circle-crop mode, and exact pixel sizing, you can fit profile pictures, thumbnails, and social images in one place. It runs in your browser with no uploads, and your original is kept intact.
Aspect-ratio and use-case presets
Lock the crop to a ratio like square (1:1), 16:9, or 9:16 with one click. Use-case presets are ready too — Instagram feed (1:1, 4:5), Stories/Reels (9:16), YouTube thumbnail (16:9), and passport photos — so your image isn't awkwardly re-cropped after you upload. Once a ratio is locked, dragging a corner keeps that ratio.
Circle crop (round profile pictures)
Choose 'Circle' to crop the image into a circle and save it as a transparent PNG. Perfect for profile pictures, avatars, and round logos — no separate editor needed.
Crop to an exact pixel size
Type an exact width and height in pixels to crop to that precise size — handy when you need something like 1080×1080 or 1920×1080. Rough it in by dragging, then fine-tune with the numbers.
Compress after you crop
Cropping already reduces the file, but for the web run it through the image compressor for faster loading. Your original stays untouched — only the cropped result is downloaded. See the circle crop guide, the social image size guide, and the crop image guide for more.
よくある質問
- 正確なサイズで切り抜けますか？
- はい、選択範囲の幅と高さ（ピクセル）がリアルタイムで表示され、正確なサイズ調整が可能です。
- 元の画像は変更されますか？
- いいえ。元画像はそのまま保持され、切り抜いた新しい画像を別途ダウンロードします。
- 対応している画像形式は？
- JPG、PNG、WebP、GIFなど、ブラウザ対応のすべての画像形式が使用できます。
- Can I crop to a fixed ratio like square or 16:9?
- Yes. Tap an aspect-ratio preset (1:1, 4:3, 3:4, 16:9, 9:16) or a use-case preset like Instagram or YouTube to lock that ratio.
- What happens to the background with a circle crop?
- Everything outside the circle becomes transparent and is saved as a PNG, so it looks round on any background.
- Can I crop to an exact pixel size?
- Yes. Enter the width and height under 'Custom size' to crop to those exact pixels.
- Does cropping change the original?
- No. The original is left as-is and only the cropped image is downloaded.