Watermark Adder
Add a text or logo watermark to your images online.
Upload your image, customize your watermark, position it exactly where you want and download the watermarked image.
Drag & Drop your image here
or Choose Image from your device
Use watermarks to protect or identify images you own or are authorized to publish. Adding your copyright or logo safeguards your photography against unauthorized online sharing.
Add a Watermark to an Image Online
Learn how text, logos, transparency, and positioning protect your visual assets.
Stamp copyright notices, website URLs, or author names with custom typography, font sizing, weights, and high-contrast outline strokes.
Overlay your company emblem or brand badge while preserving full alpha channel transparency and proportional scaling.
Drag the watermark freely with live canvas feedback or snap to standard 9-point grid corners with responsive edge margins.
How to Add a Watermark to an Image
Follow this straightforward workflow to stamp and protect your photos in seconds.
Drag & drop your photo or browse files (JPG, PNG, WebP, AVIF).
Switch between custom Text Watermark or Logo Image watermark.
Enter your text or upload a transparent PNG logo.
Adjust font size, text color, logo scale, opacity, and rotation.
Drag directly on the canvas or pick a 9-point corner anchor.
Inspect the real-time canvas preview or toggle Before/After compare.
Click 'Apply Watermark' to render full-resolution output.
Save your protected watermarked image instantly.
Frequently Asked Questions
Everything you need to know about stamping watermarks online with ReducerImage.
Upload your photo, select Text or Logo watermark, customize the font, size, color, and opacity, drag or choose a preset position, and click 'Apply Watermark' to download your watermarked image.
Yes. You can enter any custom text, choose from web-safe and Google fonts, adjust font size (12–300px), font weight (Normal, Medium, Bold), text color, and add contrast outlines.
Yes. Upload your logo in PNG, JPG, or WebP format. PNG logos with transparent alpha channels will maintain their transparency over your photo.
Yes. The opacity slider allows you to set the watermark transparency anywhere from 0% (invisible) to 100% (solid).
Yes. You can rotate text or logo watermarks freely between -180° and +180° for diagonal stamps and angled branding.
Yes. You can click and drag the watermark directly on the live interactive canvas or choose any of the 9 preset anchor positions (top, center, bottom, left, right).
Yes. You can apply a text watermark, click Apply, and then add a logo watermark or additional text layers on top of the generated result.
Yes. Toggle the 'Tile Watermark Pattern' option to tile your text or logo across the entire image with customizable spacing and rotation.
Yes. The output image retains the exact pixel width and height of your original high-resolution photo.
Yes. You can export as JPG with adjustable quality (1–100%), or save in lossless PNG or WebP format.
Yes. Selecting PNG format exports a lossless, high-quality image with full color fidelity.
For multi-image batch watermarking with ZIP downloads, you can use our dedicated Batch Watermark tool at /batch-processor.html.
No. Your images are processed 100% locally in your browser using HTML5 Canvas. Zero data or images are ever uploaded to external servers.
No. The watermark is rendered at full source resolution without downscaling your photo. Choosing PNG or high-quality JPEG (90%+) retains crisp image clarity.
Yes. Transparent PNG logos are rendered with full alpha transparency preserved so only the graphic overlays the photo.