Add Watermark — Text / Logo, Tiled or Positioned
Add text or logo watermarks to your images in batch: tiled for anti-theft, corner / center placement, custom opacity, size and color, with live preview. Works on desktop, tablet & mobile — batch, local, no upload.
Watermarking overlays text or a logo on an image for attribution, theft protection, or branding. This tool supports text watermarks and locally uploaded logo watermarks, tiled across the whole image (diagonal repeat — hardest to crop out) or placed in a corner / center, with adjustable opacity, size and color and a what-you-see-is-what-you-get live preview. Batch supported, processed entirely in your browser — and for an anti-theft task like watermarking, local processing matters most.
When You Need It
Protect Art / Photos
A tiled, semi-transparent signature is hard to crop out or erase.
Brand Product Shots
Batch-add your logo to the corner of product images for consistent branding.
Mark Docs / Screenshots
Stamp “Sample” or “Internal” text onto contracts and drafts.
About Watermarking
- Text + logo watermarks, tiled or positioned
- Adjustable opacity / size / color with live preview
- Batch support — image and logo both stay local
- Logo is local-upload only (no external URLs, to avoid canvas taint / export failure)
- Tile density is computed from text / logo size
- Supports PNG / JPG / WebP only
Watermark FAQ
No. Both the text watermark and your uploaded logo are composited locally with Canvas — neither leaves your device.
Tiled repeats diagonally across the whole image — hardest to crop or erase, best for anti-theft. Single places one watermark in a corner or center — lighter, good for branding.
Yes — switch to “Logo” mode and upload an image (transparent PNG recommended); adjust size, opacity and position. The logo is not uploaded either.
Yes — upload a batch, apply the same watermark to all, then download as a single ZIP.