Bulk watermark photos online
Add a text or logo watermark to dozens of photos at once, then download them one by one or as a ZIP.
🔒 100% Secure & Private: All watermark processing occurs instantly within your browser local RAM. Your commercial assets are never transmitted to any external server.
Drag & drop your images here
or browse files. JPG, PNG and WebP up to 50 MB each.
Live preview
Upload images to see the preview
Sizes are relative, so the watermark looks the same on every image whatever its resolution.
Your images never leave this device.
Add a watermark to many photos at once
Watermarking photos one by one in an editor takes minutes per image. This bulk watermark tool applies the same text or logo to every photo in a single pass ("đóng dấu ảnh hàng loạt"), with size, margin and position scaled to each image, so a 600 px phone photo and a 6000 px camera file look consistent.
Preview the result live, fine-tune size, opacity, margin and rotation, then download each image or the whole batch as a ZIP. It suits photographers, online sellers, real estate agents and anyone who shares images publicly.
Watermark a batch in 4 steps
- 1Drop your photos into the upload area.
- 2Type your text or upload your logo, then pick a position on the 9-point grid or the tiled pattern.
- 3Adjust size, opacity, margin and rotation while watching the live preview.
- 4Click Watermark, then download images individually or all at once as a ZIP.
Where to place your watermark
- Bottom-right corner: subtle and professional, but easy to crop out.
- Center: hard to remove, but it draws attention away from the photo.
- Tiled pattern: the strongest protection, ideal for previews and proofs.
Your photos never leave your device
Watermarking usually happens right before publishing, while photos are still unreleased product shots, client work or personal documents. Upload-based tools copy those files to someone else's server. Here every image is decoded, stamped and saved inside your browser's memory, and nothing is uploaded. Output keeps the exact original pixel dimensions, and camera metadata such as GPS location is removed from the exported files.
Frequently asked questions
Does a watermark stop people from stealing my photos?
It discourages casual reuse and keeps your name attached when images are shared. A small corner mark can be cropped out, though; for stronger protection, use the tiled pattern across the whole image.
Will the watermark look the same on all my photos?
Yes. Size and margin are relative to each image, so the watermark keeps the same proportions on portrait and landscape photos of any resolution.
How many photos can I watermark at once?
There is no fixed limit. Images are processed one at a time to keep memory low, so even large batches of camera photos work on a laptop.
Does watermarking reduce image quality?
The resolution never changes. PNG output is pixel-perfect, and JPG or WebP output is saved at the quality you choose, up to 100%.