画像に透かしをオンラインで追加 — 著作権テキスト・ロゴ

Apply copyright text or logo watermark stamp with opacity and position.

Drop photos here to add watermark

Stamp copyright text, brand names, or logos onto your images

ファイルキュー 0 images 0 B
100%クライアントサイドサンドボックス
W3C Canvas 2D & EXIF Compliant

使用方法 画像に透かしを追加

1

選択してアップロード

Drag your photos into the watermarking workbench.

2

設定とプレビュー

Enter your watermark text, adjust font size, color, opacity, and choose placement (Corner, Center, Tiled).

3

処理とダウンロード

Click 'Apply Watermark' to stamp and download your protected photos.

技術アーキテクチャとクライアント側のプライバシー

Processing Engine Browser Canvas 2D & Binary Transcoder
Privacy Model 100% In-Memory Sandbox · Zero Server Uploads
Format Standards PNG, JPEG, WebP, SVG, ICO Specifications
Execution Speed Zero Network Latency · Instant Local Output

Frequently Asked Questions

Can I position the watermark anywhere on the image?

Yes. You can select Bottom-Right, Bottom-Left, Top-Right, Top-Left, Center, or full-surface Tiled protection.

Can I adjust watermark transparency?

Yes. Use the opacity slider (from 10% faint to 100% solid) to balance visibility and aesthetic appeal.

Can I watermark multiple photos at once?

Yes. Your watermark settings are applied consistently across all uploaded photos in the batch.