Watermark & Protect PNG Images — Free Online
Protecting your PNG images with a watermark prevents unauthorized use and ensures proper attribution. Lossless image format that supports full alpha transparency. Best for logos, graphics, and images requiring sharp edges. ImageSmith lets you compress and optimize PNG images for the web, making them ready for sharing while keeping file sizes small. All processing happens in your browser — your PNG files are never uploaded.
Watermark PNG Now
Corner placement
Place watermarks in a corner — visible but not intrusive
Semi-transparent
Use 50–70% opacity for a professional, non-distracting look
Brand identity
Include your brand name, website URL, or copyright notice
Consistent style
Consistent watermark placement builds brand recognition over time
Compress your PNG too
Reduce file size before sharing — instant, browser-based, free.