Watermark Tool — 9-Position Picker, Text or Image Watermark
Add text or image watermarks to any photo in your browser. Furthermore, a 9-position grid picker places the watermark at any corner, edge-centre or centre position with a single click — a feature not available in any other free browser watermark tool. Control opacity, font size, font style, colour and padding. No file is uploaded to any server.
How to use the Watermark Tool
Upload your base image
Drop any image onto the drop zone. Furthermore, select one of three watermark modes from the tabs — Text watermark, Image watermark or Diagonal tiled. The mode tabs switch instantly and the watermark preview updates live.
Configure the watermark
For text mode, enter the watermark text, choose font size and colour. Furthermore, for image mode, upload a PNG logo as the watermark. Adjust the opacity slider — lower values produce a subtle, semi-transparent watermark while full opacity creates a clearly visible mark. Click any position in the 9-button grid to place the watermark.
Preview and download
The canvas preview updates live as you adjust any setting. Furthermore, the diagonal tiled mode covers the entire image with repeated text for maximum protection. Click Download to save the watermarked image as a JPG.
The three watermark modes
Each mode serves a different protection or branding purpose. Furthermore, combining modes — tiled for high-value images, positioned for sharing — covers different use cases from the same upload.
| Mode | Description | Best for |
|---|---|---|
| Text watermark | Single text string at a specific position | Copyright notices, photographer credit, brand name |
| Image watermark | Logo PNG at a specific position | Brand logo placement, official stamps, professional photos |
| Diagonal tiled | Repeating diagonal text across the full image | Preview images, protected proofs, high-value artwork |
How the 9-position grid calculates watermark placement
The position grid maps three horizontal alignments (left, centre, right) to three vertical alignments (top, middle, bottom). Furthermore, the x and y coordinates of the watermark derive from the canvas dimensions and the selected position code.
y (bottom): canvas.height − pad
y (middle): (canvas.height + fontSize) ÷ 2
Tiled step: textWidth + 60px horizontal, fontSize + 40px vertical, rotated −45°
Worked example: protecting a portfolio photograph
A photographer wants to share a portfolio image online with a visible copyright notice. Settings used:
| Setting | Value |
|---|---|
| Mode | Text watermark |
| Text | © Jane Smith Photography 2025 |
| Position | Bottom right (↘) |
| Opacity | 60% |
| Font size | 28px |
What is image watermarking?
Image watermarking adds a visible or semi-transparent overlay to a photograph or graphic to identify its owner or deter unauthorised copying. Furthermore, text watermarks embed the photographer's name, copyright year or business name directly into the image pixels — making the claim of ownership visible to anyone viewing the image. Image watermarks embed a logo or stamp rather than text. Moreover, diagonal tiled watermarks — repeating the copyright notice across the entire image at an angle — provide the strongest visual deterrent. Cropping any single corner of the image still leaves watermark text in the remaining content.
Opacity and the watermark effectiveness trade-off
Watermark opacity balances visibility against image experience. Furthermore, a 100% opacity white watermark protects the image effectively. Significantly impairs the viewing experience — recipients struggle to assess the content through an opaque overlay. A 30–50% opacity watermark remains clearly visible in well-lit areas while blending into darker areas, providing protection without blocking the subject. Moreover, the optimal opacity depends on the image content — dark photographs benefit from white watermarks at higher opacity, while bright images show watermarks clearly at lower opacity.
Why the 9-position grid matters for professional watermarking
Competitors require typing position values, selecting from dropdown labels or dragging a watermark with a mouse. Furthermore, a 9-button grid reduces position selection to a single click — instantly placing the watermark at any of the nine standard positions. The visual layout of the grid mirrors the image position, making the selection intuitive without labels or instructions. Moreover, rapidly switching between positions while the preview updates live allows immediate visual comparison of placement options — which corner preserves the most visual impact for the specific image composition.
Frequently asked questions
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