画像ウォーターマークツール
画像にテキストウォーターマークを追加します。位置、不透明度、回転、タイルパターンをカスタマイズ。
Click to upload an image
Supports JPEG, PNG, WebP
Tips:
- • Use tiled pattern for better protection against cropping
- • Lower opacity (20-40%) is subtle but still visible
- • Diagonal rotation (-45°) makes watermarks harder to remove
- • Processing is done entirely in your browser
Watermarking Images - 技術的な詳細
Watermarks help protect images from unauthorized use and establish ownership. Place watermarks strategically to be visible without ruining the image. Use tiled patterns for better protection against cropping.
コマンドラインでの代替方法
Watermark tips:\n- Use 20-40% opacity for subtle marks\n- Diagonal placement is harder to remove\n- Tiled patterns prevent cropping\n- Include copyright symbol: \u00a9