Image & ID Card Watermark Studio
100% client-side watermark generator. Protect ID cards, certificates, and photos by overlaying repeated semi-transparent anti-abuse watermarks without uploading to server.
Opacity
{{ Math.round(opacity * 100) }}%
Rotation Angle
{{ angle }}°
{{ imgEl.naturalWidth }} × {{ imgEl.naturalHeight }} px
All watermark rendering is performed purely inside your browser memory using HTML5 Canvas. Your sensitive identity cards, passports, contracts, and business licenses will NEVER be uploaded to our servers or stored anywhere. Safe, instant, and completely private.
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