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.

Upload Images to Watermark

Drag & drop single or multiple files

Watermark Config

Tile Grid
5%
Compress OutputReduce file size of watermarked images

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?

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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.

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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.

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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.

Why use FastCompressor Desktop for add watermark to images online?

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.

Feature
Desktop App
Online Tools
Upload Required
Internet Required
Batch Compression
Unlimited
Usually capped
Folder Support
Privacy
100% Local
Uploaded to servers
Large Files
No limits
Strict limits
Download for Windows

Frequently Asked Questions

You can watermark JPG, PNG, and WEBP images. The tool also lets you upload transparent PNGs to use as logo watermarks.
Yes! You can toggle the 'Compress Output' option. Once watermarked, the images are run through our powerful compression engine to reduce file size before downloading.
No! Because the processing happens locally on your computer, there are no strict server limits. However, processing massive batches (500+ images) may depend on your computer's RAM.