ยฉ๏ธ 100% Client-Side ยท Multi-Photo Batch Watermarking

Batch Watermark Images Online

Add a text or logo watermark to multiple images at once. Customize position, opacity, scale and output settings, then download individual images or a ZIP with ReducerImage.

Features:Text & Logo WatermarksProportional Scaling9 Anchor PositionsZIP Bulk Export

Drag & Drop Multiple Photos Here

Select dozens of photos to apply custom text, copyright, or logo watermarks in one go.

๐Ÿ’ก Tip: 100% in-browser processing. Zero photos uploaded to any external server.

How Batch Watermarking Works

Our batch watermarking engine processes entire photo galleries directly inside your browser memory, applying resolution-independent branding to every image.

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Proportional Auto-Scaling

Watermarks automatically scale as a percentage of each photo's resolution, ensuring consistent branding across mixed portrait, landscape, and high-res cameras.

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Memory-Safe Processing

Images are rendered sequentially on offscreen canvas buffers, preventing browser tab memory crashes on large multi-megapixel photo batches.

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1-Click ZIP Archive

Export dozens of watermarked images into a single compressed ZIP file, ready for social media publishing or client delivery.

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100% Client-Side Privacy

All image watermarking and ZIP creation happen locally in your browser. Zero photos are uploaded to any external server.

More Watermark & Batch Tools

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Add Watermark

Single image watermark editor

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Watermark Remover

Erase logos & stamps from photos

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Batch Processor

Bulk compress & resize images

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Object Eraser

Erase unwanted items & clutter

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Blur & Censor

Pixelate faces and private info

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Compress Image

Reduce photo file size

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Resize Image

Change dimensions & scale

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Crop Image

Free & ratio crop

โ“ Help Center

Frequently Asked Questions

Everything you need to know about batch watermarking photos.

Upload your photos, select a text or logo watermark, choose your preferred position and opacity, and click 'Apply Watermark to All'. You can download individual photos or a complete ZIP file.
Yes. Type your copyright name or brand text, select your font, text color, and stroke outline, and the watermark will be applied proportionally across every queued photo.
Yes. Upload a transparent PNG or WebP logo file. The engine will overlay it with preserved transparency at your chosen position and scale.
Yes. The opacity slider allows you to set transparency from a subtle 10% watermark to an opaque 100% overlay.
Yes. You can position the watermark in any of the 9 anchor positions (Top-Left, Top-Center, Top-Right, Center-Left, Center, Center-Right, Bottom-Left, Bottom-Center, Bottom-Right) with adjustable margin spacing.
Yes. Watermark dimensions are computed proportionally as a percentage of each individual image's width, preventing watermarks from becoming oversized or microscopic on mixed-dimension batches.
Yes. Click 'Download All as ZIP' to download a clean, structured ZIP archive containing all successfully processed images.
No. Your original files remain completely untouched on your device. The tool generates new watermarked copies for export.
Yes. Each image is processed at its full native resolution (e.g. 4000x3000 px) preserving 100% of the original photo dimensions.
No. All batch processing and ZIP generation execute 100% locally inside your web browser. Zero photos are sent to remote servers.
For maximum privacy, canvas re-encoding strips embedded GPS and camera metadata by default before creating the watermarked output.
View Full FAQ โ†’