Blur Part of an Image
Hide just one area — drag a box over the part to blur and leave everything else sharp, free and in your browser.
ぼかす画像をドロップ
ドラッグ＆ドロップ、貼り付け、またはファイルを選択
PNG · JPG · WebP · GIF · BMP — お使いのデバイスで処理
Blur only what you choose
Sometimes you only need to hide one thing — a face in the corner, a sign in the background, a number on a screen — while keeping the rest of the photo crisp. This tool lets you drag a box over exactly that area and blur, pixelate, or black it out, leaving everything outside the box at full resolution.
Add as many boxes as you like, each obscured independently, and adjust the strength to taste. When you download, only the selected areas are changed and the effect is flattened into the file — so the rest of your image is untouched and the hidden parts can't be recovered.
How to blur part of an image
- Open your image. Drag it onto the tool, choose a file, or paste it.
- Drag over the area. With Selected areas chosen, drag a box over just the part you want to hide. Add more boxes if needed.
- Adjust and download. Set the blur strength (or switch to pixelate/redact), then download in your original format.
Resize by re-drawing
To change an area, remove it with the small ✕ on the box (or Undo) and drag a new one. Draw the box slightly larger than the detail so nothing identifying peeks out at the edges.
blur part of an imageの仕組み
- 何をするか
- 一つ以上の領域を選択的にぼかす
- ツールの処理方法
- 隠したい領域だけにボックスをドラッグし、ぼかし・ピクセル化・ベタ塗りバーから選びます。効果は領域ごとに適用され、そのボックス内にクランプされるため、選択範囲の外のピクセルはすべて元の解像度を完全に保ちます。
- 何のためのものか
- 選択的な隠蔽は、写真の残りをぼかしたり劣化させたりせずに、たった一つ—隅の顔、背景の看板、モニター上の数字—だけを隠したいときのためのものです。
- 元に戻せるか？
- 変更されるのはボックス内の領域だけで、結果はダウンロードファイルに統合されるため、隠した部分は復元できず、触れていない領域は元と1ピクセルずつ同一のまま残ります。
ヒント： 端から識別できるものがのぞかないよう、ボックスを細部より少し大きく描いてください。ボックスの大きさを変えるには、その✕で削除して新しく描き直します。
More ways to blur & hide
よくある質問
How do I blur only one part of an image?
Choose Selected areas and drag a single box over the part you want to hide. Everything outside the box stays sharp.
Can I blur several separate parts?
Yes. Drag a box over each part; every box is blurred independently, and you can remove any one of them.
Does the rest of the image stay sharp?
Yes. Only the areas you box are blurred; the rest keeps its full resolution. The effect is baked in when you download.
Where is my image processed?
The blurring happens in your browser, so the new file is created on your own device. How any data associated with the tool is handled is described in our privacy policy.
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