Watermark Image
Stamp a custom text watermark across JPG, PNG and WebP images. Position, color, opacity and size all configurable.
Drop images to watermark
text overlay added to every image
Watermarks deter casual reuse of images and signal ownership without hiding the underlying photo. Converterzilla's image watermarker draws your text directly onto the image using the Canvas API, with full control over color, opacity, font size and corner placement.
How to use Watermark Image in your browser
- Drop your images. Add the images you want watermarked. The same watermark settings are applied to every image in the batch.
- Type your watermark text. DRAFT, CONFIDENTIAL, your name, a copyright line — anything works. The text is centered or corner-aligned based on your position choice.
- Pick position, color, size and opacity. Seven preset positions (corners, edges, center). Opacity ranges from 10% (subtle ghost) to 100% (fully visible).
- Click Watermark. Each image is drawn on canvas with the text overlay and downloaded with a -watermarked suffix.
Why use Converterzilla for Watermark Image
Seven preset positions
Top-left through bottom-right plus center. The position you pick is consistent across the batch.
Adjustable opacity
From 10% subtle ghost (for branded photos) to 100% bold stamp (for confidential drafts).
Auto-scaling text
Font size scales with image width — a 48px watermark on a 4000px-wide photo and a 1280px-wide photo look proportionally consistent.
Color picker + drop shadow
Any color you want, with a subtle shadow that keeps light text readable on light backgrounds and vice-versa.
Frequently asked questions about Watermark Image
Further reading and references
- MDN — fillText on CanvasRenderingContext2D — the browser API used to draw the watermark