Image Watermark Adder

Workflow & Usage

1. Add your images Drag & drop, paste, or click to select JPEG, PNG, or WebP files. You can watermark a single image or process many at once.

2. Choose watermark type

• Text watermark — add brand names, URLs, or copyright notices
• Logo watermark — upload a logo image and place it over your photos

3. Position the watermark Use the 3×3 position grid to anchor the watermark exactly where you want it. When tiling is enabled, the watermark automatically fills the image.

4. Adjust appearance

• Opacity — control visibility without overpowering the image
• Rotation — angle the watermark for subtle or assertive placement
• Margin — keep distance from image edges (single watermark mode)

5. Enable tiling (optional) Tile the watermark across the entire image to prevent easy cropping. Adjust spacing to balance coverage and readability.

6. Preview instantly Each image card updates live as you change settings. Previews reflect real canvas rendering — not CSS overlays.

7. Export your results

• Download images one by one
• Export all selected images as a ZIP Files keep their original format and use clear names like: photo-watermark-text-single.jpg

Everything runs fully on-device and offline-friendly.

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Text Watermark Features

• Auto text color Automatically switches between white and black based on the underlying image area for maximum contrast.

• Custom fonts Choose between clean sans, serif, or monospace styles.

• Size relative to image Text scales proportionally with image dimensions for consistent results.

• Bold & outline options Improve readability on complex or high-contrast backgrounds.

• Tiled text mode Repeat text across the image for stronger protection.

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Logo Watermark Features

• Supports PNG, JPEG, and WebP logos Transparent PNG logos work best.

• Proportional scaling Logo size adapts to each image automatically.

• Single or tiled placement Place a logo once or repeat it across the image.

• High-quality rendering Uses image smoothing for clean results even on large photos.

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Perfect For

• Photographers & Creators Protect images before publishing or sharing previews.

• E-commerce & Product Photos Add subtle branding without damaging the image.

• Social Media Content Prevent reuse while keeping visuals clean.

• Client Proofs Share drafts safely before final delivery.

• Batch Branding Apply the same watermark settings across an entire image set.

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Tips for Best Results

• Use auto text color for speed. It reliably picks a readable color without manual tweaking.

• Lower opacity looks more professional. Subtle watermarks are harder to remove and less distracting.

• Tile for protection, single for branding. Tiling discourages misuse; single placement keeps designs clean.

• Rotate slightly for resilience. Angled watermarks are harder to crop out cleanly.

• Optimize after export. Run your images through Image Compressor or Progressive JPEG Converter for web-ready file sizes.

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How It Works

• Canvas-based rendering Images and watermarks are drawn using the HTML Canvas API.

• EXIF-aware loading Images are loaded with createImageBitmap({ imageOrientation: 'from-image' }) to preserve correct camera orientation.

• Automatic contrast sampling Text color is chosen by sampling pixel brightness beneath the watermark area.

• Anchor-based positioning A 3×3 anchor grid maps directly to canvas alignment logic.

• Client-side batch export Each image is processed independently and packaged into a ZIP — no servers involved.