Crop image online, free aspect-ratio cropper with draggable rectangle
Drop an image, drag a rectangle or pick a preset aspect ratio (1:1, 4:5, 16:9), and download the cropped output. Runs in your browser, nothing saved.
- Aspect-ratio presets
- Runs in your browser
- Drag-friendly rectangle
ドラッグで比較、ビフォー / アフター
概要
Cropping a photo on a desktop browser usually means launching an image editor, fighting with a misbehaving rectangle, and exporting a file in a format you did not pick. This tool keeps the surface small: drop an image, pick an aspect ratio (or pick Custom to drag freely), drag the rectangle to the part you want, and download.
Aspect-ratio presets cover the cases people actually need: square (1:1) for product tiles, portrait (4:5, 9:16) for Instagram and TikTok, landscape (16:9, 3:2) for YouTube thumbnails and DSLR-native ratios. The Original preset removes the aspect constraint; Custom does the same but reflows freely as you drag the corners.
In any modern browser the crop runs locally: the cropper renders to a canvas and the encode happens in the browser, so the image bytes never leave your device. A server fallback exists for browsers that cannot mount the cropper canvas; on that path the upload is deleted the moment we send the result back.
使い方
3 ステップ、通常 5 秒以内に完了。
- 1
Upload an image
Drop a JPG, PNG, WebP, or AVIF up to 25 MB. Clipboard paste also works.
- 2
Pick an aspect ratio
Choose Original, 1:1, 4:5, 16:9, 9:16, 3:2, 2:3, or Custom. The rectangle resnaps to the new ratio without losing your position.
- 3
Drag the rectangle
Move the rectangle, resize from the corners, or drag the edges. The selection updates live; you can switch presets at any time.
- 4
Download the cropped image
Pick the output format (Same as source, JPEG, PNG, or WebP) and confirm. The file downloads with `-cropped` appended to the original filename.
実際の動作を見る
各スライダーをドラッグして、ビフォーとアフターをピクセル単位で比べてみてください。
画像は使い終わったら消えます
Cropping runs in your browser by default. Your image never leaves your device on that path. For the small share of browsers that cannot mount the cropper canvas we fall back to a server round-trip, where the upload is only held while we process it and is deleted the moment the result is sent back. Nothing is saved, indexed, or trained on.
- 数秒で処理
- データ保存なし
- アカウント紐付けなし
画像をアップロード
ワンクリック。サインアップ不要。あとはこちらにお任せ。
画像をトリミング
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よくある質問
新しいツールを試す前にもっとも多く寄せられる質問への回答。
関連ツール
この画像でおそらく必要になる他の作業へ、ワンクリックでジャンプ。
Resize image
Already at the right shape? Resize to exact pixels with optional aspect-ratio lock and a quality knob.
Pad to square
Want to keep the whole frame? Pad to a target aspect ratio instead of cropping it away.
Rotate or flip
If the source is sideways from your phone, rotate first, then crop.