Watermarking images protects your photographs, illustrations, and creative assets from unauthorised use and builds brand presence across shared media. Photographers watermark portfolio images before sharing with clients. E-commerce sellers watermark product photos before uploading to marketplaces. Content creators watermark their graphics to maintain attribution. The Utility Spark Watermark Image tool adds text or logo watermarks directly in your browser: choose position (corner, centre, tiled), set opacity, font, size, and colour for text watermarks, or upload a logo PNG for image watermarks. Batch processing supports multiple images in one operation. All processing runs via the Canvas API — your original images never leave your device.
lightbulb When to use this tool
- check_circle Watermarking a batch of photography portfolio images before sharing a client preview gallery.
- check_circle Adding a brand logo watermark to product photos before uploading to an e-commerce platform.
- check_circle Applying a 'CONFIDENTIAL' or 'DRAFT' text watermark to document screenshots shared for review.
- check_circle Protecting original illustrations and artwork shared on social media or portfolio sites.
Why use our tool?
Text and Logo Watermarks
Text watermarks: custom text, font, size, colour, and opacity. Logo watermarks: upload a PNG logo (with transparency preserved) and position it on the image. Both types support position presets (corners, centre) and custom positioning.
Opacity Control
Adjust watermark opacity from subtle (10–20% — barely visible in normal viewing) to prominent (60–80% — clearly legible). Standard portfolio watermarks use 30–50% opacity.
Tiled Watermark Option
Apply the watermark in a repeating tile pattern across the entire image — a more robust protection against cropping out a corner watermark.
Canvas API — Privacy-Safe
Watermarks are applied using the Canvas API drawText() and drawImage() methods locally. Your original images never leave your browser.
How it works
Upload your image(s).
Select watermark type: text or logo.
Configure the watermark: text content/font/colour or logo PNG upload.
Set position and opacity.
Click 'Apply Watermark' — preview appears.
Download the watermarked image.
Examples
science Photography Portfolio Watermark
Text watermark: '© 2024 Studio Name' | Font: Georgia | Size: 24px | Opacity: 40% | Position: Bottom-right
Result: Professional watermark visible enough to identify ownership, subtle enough not to distract from the image