Add a Watermark to Photos Online
Stamp your logo or signature on photos before sharing — with a live preview, batch support and full-resolution export. Free, in your browser.
Watermarking done properly
- Your own logo: use any PNG (transparency supported), JPEG, WebP or SVG.
- 9 anchor positions: corners, edges or center — like Lightroom's watermark editor.
- Size, opacity and inset sliders with a live preview on your actual photo.
- Remembered between sessions: set it up once, reuse it on every export.
- Full resolution: the watermark is rendered onto the final full-size JPEG or PNG.
Watermark a whole batch
Delivering a client gallery or posting a photo set? Select any number of photos in the grid view (press G), click Export, and every photo gets your watermark in the same position — exported in one go, straight into a folder on Chrome and Edge.
Edit and watermark in one place
OpticRaw is a full Lightroom-style editor, so you can color grade, crop and apply presets first, then watermark on export. It even works with RAW files from Sony, Canon, Nikon, Fujifilm and more.
Frequently asked questions
How do I add a watermark to a photo online?
Open OpticRaw, load your photo, click Export and enable Watermark. Choose your logo image, set position, size and opacity with the live preview, then export.
Can I watermark many photos at once?
Yes. Select multiple photos in the grid view (G) and export them together — the same watermark is applied to every photo in the batch.
What image should I use as a watermark?
A PNG with a transparent background works best — your logo or signature. JPEG, WebP and SVG also work.
Is my watermark saved for next time?
Yes. Your watermark image, position, size and opacity are remembered in the browser, so the next export is one click.
Are my photos or logo uploaded anywhere?
No. Watermarking happens entirely on your device — photos and logo never leave your computer.
Works in Chrome, Edge, Firefox and Safari. Your photos are processed on your device and never uploaded.