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Image Watermark

Add text or image watermarks — 100% in your browser

100% free Browser-only processing Files never leave your device
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Upload Image

Drop image here or click to upload

JPEG, PNG, WebP supported

100% free, processed in your browser

Watermarked image appears here

Upload an image, configure your watermark, then hit the button.

Files processed locally — never uploaded

Also try: AI Humanizer · Summarizer · Rewriter 3 free uses/day

How It Works

1

Upload your images

Drop or select one image in Single mode, or switch to Batch mode to process up to 20 images at once.

2

Configure watermark

Type your watermark text or upload a logo. Adjust opacity, font size, color, rotation, and position. All changes preview in real time.

3

Download watermarked files

Click Add Watermark & Download for a single image, or Download All (ZIP) for batch results.

FAQ

How does the image watermarking work?
The tool uses the HTML5 Canvas API to overlay your watermark (text or image) onto the uploaded picture. Everything runs in your browser — no data is sent to any server.
Can I use an image as a watermark?
Yes. Switch to "Image" mode and upload a logo or any PNG/JPEG/WebP file. You can adjust its opacity, position, rotation, and size just like a text watermark.
What is tile mode?
Tile mode repeats your watermark across the entire image with configurable spacing and rotation. Use the density slider to control how tightly the watermarks are packed. This is ideal for copyright protection since cropping cannot remove the watermark.
Can I watermark multiple images at once?
Yes. Switch to "Batch" mode to upload multiple images. The same watermark settings are applied to all images, and you can download them all as a ZIP file or individually.
What controls are available?
You can adjust opacity (0-100%), font size, text color, position (9-grid or tile), rotation angle (-45 to 45 degrees), and tile density. All changes preview in real-time before you commit.
Which image formats are supported?
You can watermark JPEG, PNG, and WebP images. The output keeps the same format as your original file.
Is my image data private?
Absolutely. Your images never leave your device. All watermarking is done client-side using the Canvas API. We don't upload, store, or see your images.
Can I watermark images on my phone?
Yes. All controls — text input, sliders, position grid, tile mode — work with touch input on iOS and Android browsers. Batch mode lets you watermark up to 20 images at once from your camera roll.
How does this compare to watermark apps or Photoshop?
Unlike dedicated watermark apps, there is nothing to install and your images stay private. Unlike Photoshop, the 9-grid position selector and tile mode make it much faster for common watermarking tasks. Batch ZIP download is included free.
Can I remove the watermark after applying it?
No. Once you download the watermarked image, the watermark is permanently baked into the pixels. Always keep your unwatermarked originals. Use our <a href="/ai/image/crop">Image Cropper</a> only if the watermark is in a corner you can afford to cut.
What is the best watermark opacity for copyright protection?
For visible protection, 20-40% opacity is standard — noticeable but not distracting. For maximum protection, use tile mode at 15-25% opacity so the watermark cannot be cropped out. Below 5% the tool warns you that the watermark may be invisible.
Can I use a transparent PNG as a watermark image?
Yes. Upload any PNG with transparency as the watermark image. The transparent areas will show the original photo through. This is ideal for logo watermarks.
Can I compress the watermarked image to reduce file size?
The output keeps the original format and quality. For further compression, run the watermarked image through our <a href="/ai/image/compress">Image Compressor</a> or <a href="/ai/image/convert">convert it to WebP</a> for 25-35% smaller files.

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View all plans — from $9.99/mo 3 free uses/day, no signup

Coda One's Image Watermark tool lets you add text or image watermarks to any photo. Choose a position from the 9-grid selector or use tile mode for full-coverage copyright protection. Fine-tune opacity, font size, color, rotation angle, and tile density with real-time preview. Process multiple images at once with batch mode. All processing uses your browser's Canvas API -- your images are never uploaded to any server. Free, unlimited, no signup required.

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