Batch watermarking that respects your photos
BigWatermark draws your watermark onto each image at its native resolution — a 6000 × 4000 pixel photo comes back as a 6000 × 4000 pixel photo. Watermark size is calculated relative to each image’s width, so a mixed batch of portrait, landscape, small and large images looks consistent without adjusting every file by hand.
| Input format | Output format | Notes |
|---|---|---|
| JPG / JPEG | JPG | Re-encoded at high quality (~92%). Orientation from the camera is respected. |
| PNG | PNG | Lossless; transparency is preserved. |
| WebP | WebP | Transparency preserved. Browsers without WebP encoding (older Safari) save PNG instead. |
Ideas for photographers, sellers and creators
- Photographers: a small logo or signature in the bottom-right corner of client previews and portfolio uploads.
- Online sellers: a store name on product photos to discourage competitors from reusing them.
- Real-estate agents: the agency logo on listing photos shared across portals.
- Designers & illustrators: a tiled, low-opacity pattern on proofs sent for approval.
- Social media managers: a consistent handle or URL on every image in a campaign.
Learn how to get the best results in our guides on batch watermarking photos without losing quality and choosing the best watermark opacity, size and placement.