Protect your creative work with precision watermarks.
Add beautiful, customizable watermarks to your photos, artwork, and documents. Control every detail - from subtle signatures to bold tiled patterns. All processing happens in your browser, keeping your files 100% private.
Watermark Examples
Real situations where a simple watermark makes a big difference.
Protect Your Identity Documents
Mark your passport or DNI with the exact purpose before sharing it — hotel check-in, rental contract, certificate request. Prevents misuse like opening bank accounts or getting credit in your name.
Identity Protection
Photography Studio & Events
Share wedding or event previews with your studio name tiled across each photo. Clients see the quality — clean files ship only once payment is confirmed.
Studio Watermark
OriginalPreview Without Full Access
Cover the lower portion of a painting, book, or document. Viewers see enough to decide — the full content stays protected behind a purchase or subscription.
Content GatePowerful Watermark Features
Everything you need to protect your creative work with professional-grade watermarks.
Full Text Control
Customize font size, rotation, position, and color. Add borders, backgrounds, and gradient effects to make your watermarks unique.
Tiled Patterns
Create repeating watermark patterns across your entire image with customizable spacing, rotation, and random offsets for maximum protection.
Multiple Watermarks
Stack multiple watermarks with different styles, positions, and opacities. Save your favorite configurations for quick reuse.
Batch Processing
Apply watermarks to multiple images at once. Perfect for photographers and content creators who need to protect entire portfolios.
PDF Support
Protect your documents too. Add watermarks to PDF files with the same precision and customization options as images.
Smart Presets
Start with professionally designed watermark templates. One click to apply, then customize to match your exact needs.
Your Data Stays Private
Security isn't a feature - it's our foundation. Your files never leave your browser.
Zero-Knowledge Processing
All watermarking happens locally in your browser. Your files are never uploaded to any server, ensuring complete privacy.
No Storage, No Logs
We don't store your files, track your usage, or collect any data. What happens in MarkShield stays in MarkShield.
Works Offline
Once loaded, MarkShield works completely offline. No internet connection required for watermarking your files.