Add Watermark
Protect your photos and images by adding text or logo watermarks. Control the watermark position (corner, centre, tiled), opacity, size, font, and colour. Apply a consistent watermark to multiple images at once for batch protection. All processing happens in your browser — your original images are never uploaded to any server.
How to Use Add Watermark
- 1
Upload your image
Click the upload area or drag and drop a JPG, PNG, or WebP image. You can also add multiple images for batch watermarking.
- 2
Choose watermark type
Select Text to add a text watermark (your name, website URL, or copyright notice), or Image to use a logo PNG file as the watermark.
- 3
Customise the watermark
For text: choose font, size, colour, and opacity. For image: upload your logo PNG (transparent background recommended) and set its size. Position the watermark using the position grid (corner, centre, or tiled).
- 4
Preview
The watermark is shown on the image preview in real time. Adjust opacity if the watermark is too prominent or too subtle.
- 5
Apply and download
Click Apply. Download the watermarked image, or Download All if you are processing a batch.
When to Use This Tool
Quick Reference
About Add Watermark
The Add Watermark to Image tool lets you protect your photographs, illustrations, and graphics by overlaying a custom text or logo watermark. Watermarking is the standard way photographers, designers, and content creators mark their work before sharing proofs or posting publicly — it signals ownership and deters unauthorized use without permanently altering the underlying image.
This tool is commonly used for:
- Watermarking portfolio photos before sharing with clients for review
- Adding a copyright notice to product images before listing on marketplaces
- Branding screenshots and diagrams with a company logo before publishing in documentation
- Protecting photography proofs sent to customers before purchase
- Marking images with "DRAFT" or "SAMPLE" text for review processes
Text watermarks are rendered directly on the canvas using the browser's native font rendering engine. You can customize the font, size, color, opacity, rotation angle, and position (corner or tiled across the image). Image watermarks (logos, signatures) are composited onto your photo using the Canvas 2D API's globalAlpha and drawImage methods, which ensures the watermark blends naturally at any opacity level.
Input formats: JPG, PNG, WebP, GIF, BMP. Text options: custom text, font size (12–120px), opacity (10–100%), rotation (0–360°), color (any hex). Position: top-left, top-right, center, bottom-left, bottom-right, or tiled repeat. Logo watermark: upload a PNG with transparency for best results. Output: JPG or PNG.
Your original image and watermark files are processed entirely within your browser's memory. Nothing is uploaded to external servers. Once you close the page, all data is cleared. This makes the tool safe to use with unpublished work, confidential client previews, and proprietary product designs.
After watermarking, consider using the Image Compressor to reduce file size for web sharing, or the Image Resizer to adjust dimensions before uploading to your platform of choice.
Pro Tips for Add Watermark
Set text watermark opacity to 30–40% for a visible but non-distracting mark — fully opaque watermarks can ruin the viewer experience and make proofs feel unprofessional.
Use a diagonal rotation of 45° with tiled repeat for maximum copyright protection — it covers the entire image and is much harder to crop out than a corner watermark.
For logo watermarks, always use a PNG with a transparent background — JPG logos have a white rectangle background that looks bad on colored images.
Place watermarks in a non-uniform position (slightly off-center) to make automated removal more difficult — corner watermarks are the easiest for AI tools to detect and remove.
Frequently Asked Questions
Related Image Tools
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