2026 年 3 月更新

画像をぼかします

Add an adjustable blur to any photo online for free — soften a whole image or obscure sensitive details, instantly and privately in your browser.

Drop or click to upload PNG, JPG, WebP or BMP

最大ファイルサイズは10MBです。サインアップさらに詳しく。

How To Blur An Image Online For Free

Upload Your Image

Drag and drop an image or click to browse. Supports PNG, JPG, WebP, and BMP.

Adjust the Blur

Drag the Blur Strength slider and watch the live preview until the softness looks right.

ダウンロード

Choose PNG, JPG, or WebP and download the blurred image at full resolution.

100% Free

No fees, no watermark, no sign-up required.

Private

Runs in your browser — images never leave your device.

Full Resolution

エクスポートでは、画像の元のサイズが維持されます。

Any Device

Works on desktop, tablet, and mobile browsers.

よくある質問

How do I blur an image?

Upload your image and drag the Blur Strength slider until you reach the softness you want — the preview updates live. Click Download to save the blurred image.

Can I use this to hide sensitive information?

A strong blur obscures faces, license plates, or text for casual sharing. For legal redaction, note that heavy pixelation or a solid box is more secure than blur, which can sometimes be partially reversed.

どれくらいの強さのぼかしが可能ですか？

The slider goes from a subtle 1-pixel softening up to a heavy blur that removes all fine detail, so you can dial in anything from a gentle glow to full obscuring.

Does blurring change my image resolution?

No. The output keeps the original width and height — only the sharpness changes. PNG export is lossless.

Are my images uploaded to a server?

いいえ。ブラーは Canvas API を使用してブラウザ内でローカルに実行されるため、画像がデバイスから離れることはありません。

What formats can I use?

Upload PNG, JPG, JPEG, WebP, or BMP, and export as PNG, JPG, or WebP.