Add watermarks to images online with ImageWizo. Upload your image, customize the available watermark settings, preview the result, and download your watermarked image.
ImageWizo Image Watermark is a professional in-browser copyright protection and digital asset branding suite designed to overlay custom typographic text or graphic logo watermarks onto your photos with sub-pixel alignment. Equipped with 9 rapid alignment presets, live interactive drag-and-drop placement, customizable font typography, granular opacity transparencies (0% to 100%), 360-degree rotation angles, and a repeating diagonal tiled security pattern mode, this utility safeguards intellectual property against unauthorized scraping and redistribution. Executed entirely within your device’s local browser sandbox, your proprietary creative assets are processed with zero remote server upload queues.
Local File Processing: File processing is performed locally in your browser rather than uploaded to an ImageWizo processing server. All processing for Image Watermark happens directly inside your web browser using client-side technologies and local device memory.
The watermarking engine composite-renders text and logo layers onto your base image using an HTML5 Canvas 2D graphics context. When a text watermark is configured, the browser calculates bounding metrics using the chosen font family, weight, and size, rendering vectors at your designated opacity and rotation coordinates. When an image logo is uploaded, it is decoded into an alpha-channel bitmap, scaled to your chosen proportion, and blended onto the primary canvas buffer using globalCompositeOperation rules. For tiled patterns, mathematical row and column loops calculate equidistant intervals across the entire canvas area. All blending and binary re-encoding execute locally in browser memory without sending data to an ImageWizo processing server.
Drag and drop any JPG, PNG, or WebP photo into the watermarking workspace to load it directly into browser memory.
Select Text Watermark to type custom copyright messages, or Image Watermark to upload a transparent PNG brand logo.
Adjust font typography, size, color, opacity transparency slider, and rotation angle to achieve your desired visual prominence.
Click any of the 9 compass alignment presets (e.g., Bottom-Right, Center) or drag the watermark directly on the canvas preview to fine-tune placement.
Enable the Tiled Pattern switch to distribute repeating diagonal stamps across the entire image for maximum proof protection.
Select your preferred export format (PNG, JPG, or WebP) and download your protected image immediately.
Stamp customized copyright typography or upload high-resolution transparent PNG brand logos.
Freely click and drag watermarks to any pixel coordinate with real-time visual alignment feedback.
Instantly snap watermarks to Top-Left, Top-Center, Top-Right, Center, Bottom-Left, Bottom-Center, Bottom-Right, and more.
Distribute semi-transparent stamps across the entire surface to deter uncredited cropping or AI background removal.
Fine-tune subtle translucent watermarks or bold opaque copyright stamps with multi-angle rotation.
File processing is performed locally in your browser rather than being sent to an ImageWizo processing server.
Apply repeating diagonal translucent proof stamps on wedding, portrait, and commercial photo galleries before client payment.
Stamp branded storefront logos onto white-background product photos to prevent competitors from scraping your visual assets.
Add subtle agency branding and listing agent contact details across property listing photographs.
Stamp bold "CONFIDENTIAL" or "DRAFT" diagonal watermarks across scanned contracts and internal memos.
Always use transparent 24-bit PNG files for logo watermarks to avoid unsightly rectangular white background boxes around your brand icon.
An opacity setting between 20% and 40% ensures watermarks deter image theft without overpowering or distracting from the underlying photo subject.
When applying white text onto light or variable backgrounds, choose a watermark color with slight drop-shadow or place it across a darker quadrant of the image.
A single corner watermark can easily be cropped off by unscrupulous web users. Use the Tiled Pattern mode for full-canvas proof protection.
Solution: JPG has no transparency channel and displays an opaque white box over your photo. Convert your logo to transparent PNG format first.
Solution: Opaque watermarks obscure the beauty of photos and ruin portfolios. Reduce opacity to 25-35% for elegant protection.
Solution: Corner watermarks are easily cropped out using simple photo editors. Place watermarks near the central subject or use tiled mode.
Solution: Small 100px logos appear blurry when scaled onto large 4000px photos. Upload high-resolution master PNG logos (at least 1000px wide).
Possible Cause: The uploaded logo was saved in JPG format rather than transparent PNG.
How to Fix: Re-export your logo from design software with transparency enabled as a PNG file, or use our Background Remover tool to make it transparent.
Possible Cause: The chosen text color lacks sufficient contrast against both dark shadows and bright highlights.
How to Fix: Increase text font weight, adjust the opacity slider, or select a high-visibility contrasting color.
Possible Cause: The base photograph has massive pixel dimensions (e.g., 6000x4000 px), making default font sizes appear smaller.
How to Fix: Increase the font size slider or logo scale percentage to match the large canvas resolution.
Possible Cause: The export format was set to uncompressed PNG. For photographs, export as JPG or WebP at 80% quality.
How to Fix: Switch your target export format to JPG or WebP to reduce output byte weight.
Bottom-right corner placement at 35% opacity is the universal standard for photography portfolios and social media editorial attribution.
Format your text as "© 2026 YourBrand.com" to provide clear legal attribution and direct prospective clients back to your website.
A 45-degree angled repeating tile at 20% opacity provides bank-grade proof protection that AI tools cannot easily erase.
Always maintain un-watermarked high-resolution master originals in your personal archive before distributing watermarked proofs.
Yes. ImageWizo Image Watermark is 100% free with no registration, no daily caps, and zero hidden fees.
Yes. You can upload any transparent PNG, JPG, or WebP logo file, adjust its scale and opacity, and position it anywhere on your image.
Yes. In addition to the 9 compass position presets, you can freely click and drag the watermark directly on the canvas preview to position it with pixel precision.
The tiled pattern mode repeats your text or logo watermark diagonally across the entire image at regular intervals, providing comprehensive proof protection against unauthorized cropping.
No. Supported file processing is performed locally in your web browser using HTML5 Canvas rather than being uploaded to an ImageWizo processing server. Your creative assets remain strictly confidential.
You can export in transparent PNG, compressed JPG, or next-generation WebP format with customizable quality controls.
During export, the watermark is flattened into the image pixels. Make sure to keep your un-watermarked master image safe in your personal files.