Add Watermark to Images Online
Add Watermark to Images
Overlay text or logo watermarks onto your photos in seconds. Batch process hundreds of images privately in your browser — no uploads, no account.
100% Private
Zero cloud uploads
True Color Fidelity
Original colors stay vibrant
Instant Speed
Fast in-browser processing
Free Online
No file limits
Upload Images to Watermark
Drag & drop single or multiple files
Watermark Config
Protect your photos with our free online image watermarking tool. Overlay text or logo graphics onto JPG, PNG, and WEBP images instantly. Process single files or batch watermark hundreds of images at once natively in your browser.
Why use our Watermark Tool?
100% Private & Secure
Your images never leave your device. All watermarking is processed locally in your browser, ensuring maximum privacy and security for your photos.
Batch Processing
Save time by watermarking multiple images simultaneously. Apply your logo or text once, and our engine will stamp all your uploaded files in seconds.
Fully Customizable
Control exactly how your watermark looks. Adjust opacity, padding, rotation, font styles, scale, and choose from 9 grid positions—or tile it across the whole image.
How to compress WATERMARK files
Instant, private compression in three quick steps.
Select Files
Drag and drop your WATERMARK files into the browser or click Browse.
Choose Quality
Pick Balanced (recommended), Lossless, or Maximum compression presets.
Instant Download
Save files individually or download all converted files in a single ZIP archive.
Why use FastCompressor Desktop for WATERMARK?
Online tools are great for quick, single-image edits. But when you need to process hundreds of files or maintain strict privacy, native software is the only way to go.
Frequently Asked Questions
Common questions about in-browser WATERMARK optimization.