Calqu Search tools
KR EN
Image

Image Watermark

Add a text or logo watermark to an image.

Files never leave your device · Processed in your browser

Select an image to see the watermarked preview here.

What is this?

Overlays text or a logo on your photo to mark copyright or source. The original image is drawn onto a browser canvas and the watermark is composited on top — no upload needed, results appear instantly.

Position, rotation & opacity tips

Use the 9-way position grid for a rough placement, then drag the dashed area on the preview to fine-tune it. The rotation slider (-180° to 180°) tilts the watermark, and an opacity around 30–60% keeps it visible without covering too much of the photo.

Font & style

Text watermarks let you pick a font (sans-serif, serif, monospace, Georgia, Impact, cursive), toggle bold, and adjust size and color. Only system / generic fonts are used — nothing is downloaded — so the exact look may vary by device.

Logo watermark

Upload a logo image file instead of text to composite it onto your photo, adjusting its size (%), opacity, position, and rotation. A transparent-background PNG logo blends in more naturally.

Privacy & safety

Loading, compositing, previewing and downloading all happen entirely in your browser — files are never uploaded or stored on a server.

FAQ

What is a watermark used for?
Watermarks stamp a copyright notice, signature, or logo onto a photo before sharing it online, helping deter unauthorized use. Common for social media photos, portfolios, and product images.
How do I adjust position and opacity?
Use the 9-way position grid to place the watermark, then drag the dashed area on the preview to fine-tune it. The opacity slider controls how much the background shows through — 30–60% opacity is usually a good balance.
Can I use a logo image as the watermark?
Yes. Upload a logo image file instead of text, then adjust its size, opacity, position, and rotation over the original photo. A transparent-background PNG logo blends in best.
Is my photo uploaded to a server?
No. Loading, compositing, previewing and downloading all happen in your browser only — nothing is sent or stored on a server.

Related tools

Image Compressor Reduce image file size while keeping quality. Image Editor Resize, crop, rotate and flip in one place. Image Format Converter Convert between PNG, JPG, WebP, AVIF and more.