透かし追加

写真やイラストにテキストやロゴの透かし（ウォーターマーク）を合成。位置や透明度を自由調整。

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1. Upload Image

Choose Image

Max 50MB.

Watermark Text

Font Size48px

Opacity70%

Text Color#ffffff

Position

Upload an image to preview the watermark

透かし追加

🔐 100% Private — Client-Side Execution

All processing happens inside your browser using WebAssembly and HTML5 Canvas. Zero file uploads, zero server tracking. Compliant with LGPD & GDPR.

よくある質問 (FAQ)

Can I adjust the opacity of the watermark?

Yes. The opacity slider ranges from 0 (invisible) to 100 (fully opaque). A setting of 30-50% is typically ideal for visible but non-intrusive watermarks on photographs.

Where can I position the watermark on the image?

Choose from 9 preset positions: 4 corners, 4 edge centers, and the image center. The watermark is rendered precisely at the chosen position regardless of image size.

Can I add a logo or image as a watermark instead of text?

This tool adds text-based watermarks. Use the Add Logo tool for image-based overlays. Both run entirely in your browser and require DCPixel PRO.

Will the watermark be visible if someone screenshots my image?

Yes. The watermark is burned directly into the image pixels. It cannot be removed by simply right-clicking and saving — it is as permanent as any other part of the image.

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透かし追加

1. Upload Image

Watermark Text

Position

透かし追加

よくある質問 (FAQ)

Score 99+ on Google PageSpeed Insights

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