Bulk image watermarker
Drop in a batch of photos and one logo. Place it in a corner or tile it diagonally across every image, preview the selected photo, then download one file or a ZIP of the whole batch — all on your device.
How it works
- Add your photos (JPEG, PNG, or WebP) and one logo — a transparent PNG works best.
- Choose corner placement or a tiled overlay, then adjust size, margin, rotation, and opacity.
- Download the selected image, or export the whole batch as a ZIP. Work runs on download, never on upload.
Frequently asked questions
Are my photos uploaded anywhere?
No. Your photos and logo are processed entirely in your browser. Nothing is sent to any server, and downloads are generated locally.
Which image formats can I watermark?
JPEG, PNG, and WebP photos, with a logo in PNG, JPEG, or WebP. HEIC, AVIF, GIF, and SVG are not supported yet — iPhone users should export photos as JPEG first.
What is the difference between corner and tiled mode?
Corner mode places your logo once, in one of nine positions with a margin. Tiled mode rotates the whole overlay layer (0–45°) and repeats your logo across the photo, like the diagonal protection overlays used on stock photo previews.
Will watermarking change my photos?
JPEG and WebP photos are re-encoded at quality 0.92, so they are not bit-identical. PNG output keeps pixels lossless. The logo is added, and metadata including GPS is removed. Tiled watermarks are a visible deterrent, not DRM.