Bulk Image Watermark
Protect photos instantly with customizable text and logo watermarks directly inside your mobile browser.
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Original Resolution Preserved
How to Use This Tool
1
Upload Pictures
Select single or bulk photos directly from your phone storage or computer gallery.
2
Configure Watermark
Type your custom text or pick a transparent logo. Set rotation, size, and pattern tiling.
3
Export Stamped Assets
Export individual stamped pictures or archive the entire queue in a compressed ZIP file.
Frequently Asked Questions
Are my uploaded photos sent to any remote server?
No. All processing happens 100% locally inside your client-side browser utilizing HTML5 Canvas APIs. Zero images or metadata ever leave your mobile device, guaranteeing complete privacy and offline processing security.
Does the watermarking process reduce original image resolution?
No. While the mobile screen renders a real-time scaled viewport, the final export strictly draws over the source photo's native pixel width and height, preserving 100% full-resolution camera clarity.
How does the Repetitive Grid Tiling feature work?
Grid tiling repeats your text stamp or brand logo uniformly across the full surface area of the photo canvas. This prevents copyright theft or unauthorized background cropping on e-commerce catalogs.
What do different blend modes (Multiply, Difference, Overlay) do?
Blend modes alter how watermark pixels mix mathematically with the background pixels beneath them. For example, Difference inverts colors dynamically so text remains clearly readable over bright and dark backgrounds.
How does the Batch ZIP Archive feature perform on mobile phones?
Batch export applies stamps to all queued items in an asynchronous loop, compresses the resulting files into an archive, and triggers a clean multi-file zip download titled with the required naming convention.
Stamping Watermarks...
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