Image Watermarker
Image Watermarker
Batch add text/logo watermarks to images, single/tiled layout, rotation, opacity, ZIP download.
Drag & drop images here or click to select
Supports PNG / JPEG / WebP / AVIF / HEIC / HEIF
🚀 Quick Start
- Import images: Drag & drop or click to select multiple images
- Select type: Text watermark or logo watermark
- Set text: Enter watermark text, adjust font size, color, font
- Upload logo: Select logo image for watermark
- Adjust params: Position, margin, opacity, scale, rotation
- Select layout: Single (9-position anchor) or tiled (cover entire image)
- Generate watermark: Click button for batch processing
- Download result: Download individually or all (ZIP)
📌 Common Scenarios
- Copyright attribution: Add author name or copyright notice
- Brand identity: Add logo watermark for product images
- Anti-theft protection: Use tiled mode to cover entire image
🎛️ Watermark Options
- Watermark type: Text watermark with custom text style; Logo watermark uses uploaded image
- Watermark text: Supports placeholders {filename}, {index}/{total}, {date}
- Font settings: Size, color, font, bold, stroke, shadow
- Logo image: Recommend high-resolution transparent background image
- Layout: Single (one at specified position)/Tiled (fill by spacing)
- Position: 9-position anchor (single mode only)
- Margin: Distance from edge (not available when centered)
- Opacity: 0–100%, controls watermark visibility
- Scale: Logo as percentage of image short edge, text as font size multiplier
- Rotation: -180° to 180°
- Tile settings: Horizontal/vertical spacing, offset X/Y, diagonal tiling
- Output format: PNG/JPEG/WebP, quality only applies to JPEG/WebP
🧭 Usage Advice
- Enable stroke/shadow/background box to improve text readability
- Text watermark supports placeholders: {filename} (filename) {index}/{total} (sequence) {date} (date)
- Use high-resolution transparent background logo, avoid excessive enlargement
- Increase spacing if tiles too dense, use offset or diagonal for staggering
⚠️ Limitations & Compatibility
- Large images or large batches may take longer, batch in groups recommended
- Processing may fail if output pixels too large, resize images first
- Font rendering depends on local fonts, falls back to fallback fonts if unavailable
🔒 Privacy & Security
- All processing is done in your browser; data never leaves your device
❓ FAQ
Why doesn't PNG have quality options?
PNG is lossless; JPEG/WebP use lossy compression where quality affects size and clarity.
Why does transparent background turn white when exporting JPEG?
JPEG doesn't support transparency, fills with background color. Use PNG/WebP for transparency.
What if logo is blurry?
Use higher resolution logo source, avoid excessive enlargement.
Export file size larger?
Export re-encodes the file. PNG lossless may be larger, try lower quality or WebP.
What is tiled mode?
Repeats watermark at fixed spacing across entire image, increase spacing to reduce density.