画像ツール
画像の透かし
複数画像に文字やロゴの透かしを追加し、位置・透明度・サイズを調整します。
Preview
Your preview will appear here.
Drag the watermark in the preview to position it.
Watermark settings
Choose one or more JPG, PNG or WebP images to begin.
ほとんどのツールはブラウザ内でローカル処理します。背景除去では選択した画像を設定済みサーバーで処理し、完了後に元画像を削除します。
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使い方
- Drop JPG, PNG or WebP images into the box, then choose a preview image.
- Choose a text or logo watermark and adjust its style, position, size and opacity.
- Apply the watermark to one image or all images, then download individual files or a ZIP.
おすすめの用途
- Product photography
- Social media graphics
- Proofs and client previews
注意点
Canvas encoding depends on browser support. SVG logos are sanitized locally, and animated images are rendered as their first frame. Very large images may exceed browser canvas limits.
よくある質問
Are my images uploaded?
No. Images and logos stay in your browser and are never sent to a server or analytics.
Can I watermark multiple images at once?
Yes. Add as many supported images as your device can handle and choose Apply to All Images.
Can I use my logo as a watermark?
Yes. PNG, JPG, WebP and SVG logos are supported, including transparent PNG areas.
Can I create a repeated watermark?
Yes. Turn on Tiled watermark and adjust the gaps, rotation, opacity and staggered rows.
Does the tool preserve transparent backgrounds?
PNG and WebP output preserve transparency. When converting to JPG, transparent pixels use the background color you choose.
Can I download all images as a ZIP?
Yes. Download All as ZIP is generated locally and includes only successfully watermarked images.