Add Watermark to Image — Text Watermark Online Free

How to Add a Watermark to Your Image

Adding a watermark to your images is essential for protecting your creative work and establishing ownership. Our free online watermark tool lets you add custom text watermarks to any image in seconds. Simply upload your photo, type your watermark text, adjust the position, opacity, and font size, then download the watermarked image. Everything happens in your browser — your images are never uploaded to any server.

Why Watermark Your Images?

In today's digital world, images are easily copied and shared without permission. Watermarks serve as a visible deterrent against unauthorized use and help establish your ownership of creative content. Photographers, designers, artists, and content creators all benefit from watermarking their work before sharing it online. A well-placed watermark protects your intellectual property while still allowing viewers to appreciate your work.

Customizable Text Watermarks

Our tool gives you full control over your watermark appearance. Enter any text you want — your name, business name, copyright notice, or website URL. Adjust the font size from 12px to 200px to match your image dimensions. Control the opacity from subtle (5%) to fully opaque (100%). Position your watermark in the center for maximum protection, or in a corner for a more discreet mark. The live preview shows exactly how your watermark will look before you download.

Five Position Options

Choose from five strategic positions for your watermark: center, top-left, top-right, bottom-left, or bottom-right. Center placement offers the strongest protection against cropping since it overlays the main subject. Corner placements are less intrusive and work well for portfolio images where you want to show your work clearly while maintaining ownership. Bottom-right is the most common choice for professional photographers, as it's visible but doesn't distract from the image content.

Adjustable Opacity for Perfect Balance

Finding the right opacity is key to an effective watermark. Too transparent and it's easily removed; too opaque and it detracts from the image. Our opacity slider lets you find the perfect balance. A 30-50% opacity works well for most images, providing clear visibility without overwhelming the photo. For proofing images sent to clients, higher opacity (60-80%) ensures the watermark is clearly visible and prevents unauthorized use of preview images.

Browser-Based Privacy

Unlike many watermark tools that require you to upload your images to a server, our tool processes everything locally in your browser using the HTML5 Canvas API. This means your original high-resolution images never leave your device. For professional photographers handling client work or anyone concerned about image privacy, this is a significant advantage. No account creation, no cloud storage, no data retention — just instant watermarking.

Professional Quality Output

Our watermark tool uses the Canvas API's text rendering capabilities to produce clean, professional-looking text overlays. The text is rendered with a subtle shadow for readability against both light and dark backgrounds. The output maintains the original image resolution and quality, with the watermark seamlessly integrated into the image. Downloaded images are saved as high-quality PNG files suitable for web use or printing.

Best Practices for Watermarking

For maximum protection, place your watermark in the center of the image at moderate opacity. This makes it difficult to crop out while still allowing the image to be appreciated. Use a consistent watermark across all your images for brand recognition. Include your name or website URL so viewers can find you. Avoid placing watermarks in areas of solid color where they can be easily cloned out with editing software. Keep the text concise and professional.

Frequently Asked Questions