Watermark Multiple Images Online

The fast, private bulk image watermarker. Easily watermark many images with custom text, logo stamps, or tiled protection — 100% in-browser with zero uploads.

Drag & drop or click here to watermark multiple imagesTap to select photos and watermark many images

Select MultipleJPG, PNG, WebP100% In-Browser
Supports JPG, PNG, WebP • Select multiple files
Private by default — images are processed in your browser. No upload required • Your images stay on your device.
Simple 4-Step Workflow

How to Watermark Multiple Images

The fastest way to watermark many images with our private bulk image watermarker & adder.

01

Upload Multiple Images

Drag and drop 10, 50, or 100+ images in JPG, PNG, or WebP. Watermark many images simultaneously with zero server uploads.

02

Choose from 50+ Templates

Browse curated templates for Copyright, Photography, Stock Previews, Branding, and Tiled Protection.

03

Customize & Preview

Tweak text, font, color, opacity, rotation, and 3x3 position. Preview live on high-res photos.

04

Apply to All & Download

Web Workers batch render every image. Download files individually or all together as a ZIP archive.

Privacy by Architecture

Your images never touch our servers

Unlike traditional watermarking services that force you to upload private creative assets to cloud servers, Watermarker.online runs an advanced Canvas and Web Worker pipeline directly inside your browser. Your confidential photographs, client proofs, and high-resolution originals stay 100% on your device.

Zero cloud storage
No login or registration
Original files are never modified