Opacity isn’t linear
Dropping opacity from 20% to 10% halves perceived strength. Tiny changes at low opacities make big visual differences.
Visibility curve
Image Watermark Tool — Add Text or Logo
Preview
Tip: choose “Free (drag)” and move the watermark with mouse/touch. Arrows = 1px, Shift+arrows = 10px.
Controls
Supported: PNG, JPEG, WebP, SVG (rasterized by the browser).
Repeat watermark
About this tool
This watermark tool works entirely on your device using the HTML5 canvas API—no uploads, no tracking of your images. It supports text or logo watermarks, corner or free placement, tiling patterns, and common export formats.
5 Fun Facts about Watermarks
Tiling beats corners
A tiled watermark survives most crops. Corner stamps vanish the moment someone trims the image for social posts.
Tamper deterrent
Rotation = anti-bot
A slight rotation (5–15°) makes pattern removal harder for basic scripts that expect horizontal repeats.
Pattern breaker
Logo whites need padding
White logos disappear on bright photos. A thin shadow or outline (or darker fill) keeps them legible without cranking opacity.
Readability
Save a template
Reusing the same rotation, spacing, and opacity makes brand marks consistent—and faster to apply across batches.
Brand consistency
Frequently Asked Questions
What image formats can I export?
PNG (lossless), JPEG, or WebP. For transparency, use PNG or WebP.
Can I tile watermarks diagonally?
Yes—set a rotation (e.g., 30°) and enable Tiling. Adjust spacing to taste.
Is my data private?
Yes. This tool runs entirely in your browser; your images never leave your device.