Image watermark — overlay text or image at 9-grid position
Overlay a text or image watermark onto your photos. Composited via Canvas entirely in the browser. Choose position (9-grid), size, opacity and margin. Batch-process and download as a single ZIP. Output keeps the original format (PNG / JPEG / WebP).
How to use
Drop images (batch supported). In Text mode set the watermark string, color and size; in Image mode pick a watermark image (transparent PNG logo etc.). The Placement section controls position (9-grid), opacity and margin. Click Apply to composite via Canvas. Download per file or as a single ZIP. Output keeps the source format (PNG / JPEG / WebP).
FAQ
- Are images uploaded?
- No. Composition runs on the local Canvas; nothing leaves your browser. The watermark image is also kept locally.
- Which input formats are supported?
- JPEG / PNG / WebP. The output keeps the original format and extension.
- Can I use a transparent PNG logo?
- Yes. Transparency is preserved. Only JPEG output flattens transparency to white (JPEG has no alpha).
- Can I set the size in pixels?
- Size and margin are percentages of the image width, so they stay balanced across different resolutions. Absolute pixels are not supported.
- Can I rotate the watermark?
- Not yet — only horizontal placement. Rotation is on the consideration list.
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