Image Watermark & Copyright Stamp Generator

Protect your photos with custom text watermarks or logo stamps. 9-point anchor grid, diagonal tiling, free-form drag, and opacity controls. 100% in-browser processing.

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PNG
JPG
WEBP

🔒 100% Local Processing — Watermarks applied entirely in your browser memory. Nothing is ever uploaded.

HTML5 Canvas 2D Compositing

Drop an image here, click to browse, or paste with Ctrl+V

Supports high-resolution JPG, PNG, WebP, and SVG files. Protect with custom typography, transparent logo stamps, and diagonal tiled grids.

How to use this tool

Upload any image (JPG, PNG, WebP, SVG) or paste directly from your clipboard using Ctrl+V or Cmd+V.
Choose your Watermark Type: Text Watermark or Image Logo Stamp.
Customize text, font family, font size, text color, bold/italic style, and drop shadow contrast, or upload a transparent PNG/SVG logo.
Select a placement layout: 9-point anchor grid (e.g. Bottom-Right, Center), diagonal repeating tile, or drag directly on the canvas to place anywhere.
Fine-tune opacity (10% to 100%), rotation angle (-90° to +90°), and margin padding offsets.
Download your full-resolution watermarked photo as lossless PNG or high-quality JPEG.

Frequently asked questions

Quick answers about file privacy, processing modes, formats, and device support.

All text typography rendering, logo compositing, rotation matrices, opacity blending, and tiled patterns are executed entirely within your browser tab using HTML5 Canvas 2D APIs. Your photos never leave your device and are never sent to any remote server.

Yes. In Image Logo Stamp mode, you can upload any PNG, WebP, or SVG logo. Transparency channels (alpha channels) are strictly preserved, allowing clean vector logos and graphic seals to overlay seamlessly on your photography.

Diagonal Tiled Grid mode repeats your watermark text or logo across the entire image in an evenly spaced matrix at a diagonal angle. This prevents unauthorized users from cropping out corner marks or using AI inpainting to erase localized stamps.

Yes. You can click and drag the watermark directly on the live preview canvas to place it anywhere with pixel-level precision. You can also snap it back to any of the 9 anchor points (Top-Left, Center, Bottom-Right, etc.) at any time.

Photographs often contain both bright highlights and deep shadows. Enabling the drop shadow adds a subtle dark outline behind your watermark text, ensuring it remains crystal clear and readable over any background tone.

Never. All watermarking operations are rendered onto an off-screen canvas matching 100% of your source photo's native dimensions (img.naturalWidth × img.naturalHeight) before saving.

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