Batch Image Compressor
Compress and convert images to WebP/AVIF to reduce file size.
Add watermark to photos online free
Protect photo copyright and stamp custom text or vector logos across multiple images simultaneously with 100% local privacy.
Easy Batch Watermarking Features
Protect your photos and brand assets across hundreds of images in seconds.
PNG & SVG Logo Support
Upload transparent PNGs or vector SVG logos that remain crisp on high-resolution 4K photos.
Proportional Scaling (%)
Set watermark size relative to image width so watermarks stay proportionally sized across mixed photo batches.
Grid Positioning & Rotation
Place watermarks in any corner or center position with custom rotation angles and opacity levels.
100% Private In-Browser Engine
Watermarking executes locally inside your browser memory so your original photos are never uploaded online.
How to Watermark Photos Online in 3 Steps
Upload Images
Drag your JPG, PNG, WebP, or AVIF photos into the workspace.
Customize Watermark
Select Text or Logo mode, enter custom text or upload an SVG logo, and adjust opacity.
Download Watermarked Images
Save watermarked photos individually or download the entire batch in a ZIP file.
Why Add Watermarks to Your Photos?
Safeguard image copyright and strengthen visual brand identity.
E-Commerce & Store Owners
Add your store logo to product photos so viewers can recognize their source.
Photographers & Digital Artists
Protect proof sets and portfolio samples before posting online or sending to clients.
Real Estate Agencies
Automatically stamp agency logos and contact info across property photo listings.
Social Media Managers
Add brand handles or website URLs to viral visual content across social media.
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Frequently Asked Questions
Can I upload a vector SVG logo as a watermark?
Yes! Vector SVG files render with crystal clarity on photos of any resolution.
Does the watermark size adjust automatically for different photo dimensions?
Yes. Watermark size is defined as a percentage of photo width, keeping scale consistent on all files.
Can I adjust watermark transparency and angle?
Yes, opacity is adjustable from 10% to 100% and rotation ranges from -180° to +180°.
Are my original photos stored on any server?
No. All watermarking processing occurs locally inside your web browser.
Does ToolsBatch add any hidden watermark to my photos?
No! We add zero third-party branding. Only your own custom text or logo appears on exported images.