Image Watermark Tool
Stamp a text watermark on an image before you post or send a proof. Processing stays on your device.
Images never leave your browser — processed 100% locally.
What this tool does
Watermarks deter casual reposting of your photography and graphics on social platforms.
Apply locally before sharing — opacity and placement balance protection vs. viewing experience.
How to use it
- 1
Upload your image locally.
- 2
Enter watermark text, adjust size, opacity, and position.
- 3
Download the watermarked image — processed entirely in-browser.
Effective watermarking
Corner placement is standard — center watermarks protect more but distract heavily.
Semi-transparent text at 30–50% opacity is readable without dominating the image.
Tips
- Include your handle in watermark text for attribution when reposted.
- Watermark final exports, not RAW masters you may re-edit later.
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Frequently asked questions
Can I use custom fonts?▼
The tool uses web-safe fonts — choose size and opacity for visibility without overpowering the image.
Is my image uploaded?▼
No. Watermarking uses HTML canvas locally — your image stays private.