In this article
What Is Image Watermarking?
A watermark is a semi-transparent text or image overlay placed on a photo to assert ownership, discourage theft, or brand your work. Watermarks have been used in photography, stock imagery, and document protection for decades.
Text watermarks typically display a name, URL, or copyright notice. Image watermarks use a logo or stamp. Both can be positioned at a single point or tiled across the entire image for stronger protection.
How Our Watermark Tool Works
CheckTown's watermark tool runs entirely in your browser — no files are uploaded to any server. Here's the workflow:
- Upload your image (JPEG, PNG, or WebP up to 50 MB) via drag-and-drop or file picker
- Choose between text or image watermark mode, adjust font size or scale, opacity, position, rotation, and tiling
- Click Apply and instantly preview the watermarked result — then download as PNG
Try it free — no signup required
Add a Watermark →When To Use Watermarks
Watermarking is valuable in many creative and professional contexts:
- Photography portfolios — protect your shots from unauthorized use while still showcasing your work online
- Stock images and proofs — add a visible overlay to previews so clients see the sample without being able to use it commercially
- Social media branding — tile your brand name or logo subtly across images to maintain credit as they are reshared
Frequently Asked Questions
Does watermarking reduce image quality?
The original pixels are preserved. The watermark is drawn on top as an overlay. You can adjust opacity to keep it subtle. Output is saved as lossless PNG, so there is no compression quality loss.
Can I use a logo instead of text?
Yes. Switch to Image mode and upload any PNG, JPG, or WebP file as your watermark. You can scale it, adjust opacity, and tile it across the image just like text.
Is my image uploaded to a server?
No. CheckTown processes everything in your browser using the Canvas API. Your image never leaves your device.