Watermark Tool
Protect your images by adding custom text or logo watermarks securely.
Upload Image to Watermark
Drag and drop your image here. Supports JPG, PNG, WebP up to 50MB.
How to use the Watermark Tool tool
Our watermark tool tool is designed to be completely straightforward and runs entirely in your browser. This means your files are never uploaded to our servers, ensuring absolute privacy and security.
Upload Image
Upload your image using the secure drag-and-drop area above.
Adjust Settings
Tweak the settings and quality according to your exact needs.
Download
Click the action button and save your optimized image instantly.
Why use JSoftwareLabs?
100% Free
No hidden costs, no premium tiers, and absolutely no subscriptions required.
Privacy First
We utilize modern Web APIs to process your files securely and entirely locally.
No Watermarks
Your images belong strictly to you. We never ruin them with our logo.
Frequently Asked Questions
Is my data secure?
Yes! The Watermark Tool tool processes your files entirely within your web browser. Nothing is ever sent to our backend servers, keeping your sensitive data exactly where it belongs—with you.
Are there file size limits?
Because the intensive processing happens locally on your browser using Web APIs, the limit simply depends on your device's memory. Typically, files up to 50MB work seamlessly and instantly.