Are images uploaded to a server?

No. Everything happens in your browser using the HTML5 Canvas API. No files ever leave your device. You can verify this by disconnecting from the internet before using the tool.

What logo formats are supported?

You can use logos in PNG (recommended, supports transparency), JPG, WebP, SVG and GIF formats. For the best result, use a PNG with a transparent background.

Can I adjust the logo transparency?

Yes. The opacity slider lets you adjust the logo transparency from 5% (nearly invisible) to 100% (fully opaque). The default is 30%, ideal for a subtle watermark.

Where can I position the logo on the photo?

You can choose from 9 preset positions (corners, sides, center) or drag the logo freely with your mouse or finger on touch devices. You can also resize the logo with the slider.

What format is the final image downloaded in?

The image is downloaded in PNG format at the original resolution of the uploaded photo. Quality is not degraded by the watermarking process.

Can I apply the watermark to multiple photos at once?

Yes, you can upload up to 20 photos at once. The logo will be applied to all of them with the same position, size and opacity settings. You can download each image individually or all together.

Free • No account needed

Add Logo Watermark to Photos

Apply your logo as a transparent watermark on any image. Customize position, size and opacity. 100% private, no server upload.

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100% Private

No files ever leave your device

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Customizable

Position, size, opacity

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Batch up to 20

Apply to multiple photos at once

1. Upload your logo

PNG with transparent background recommended

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Drag logo here or browse

2. Upload photos (max 20)

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Drag photos here or browse

3. Watermark settings

Position

Opacity: 30%

Logo size: 20% of photo

Edge margin: 3%

Preview

How watermarking works

Adding a transparent logo to your photos is the most effective way to protect your images and strengthen your brand. This tool lets you add your logo as a watermark to any photo, directly in your browser, without uploading anything to external servers.

Upload your logo (preferably a PNG with transparent background), select your photos, choose position, size and opacity, then download the images with the watermark applied. You can process up to 20 photos at once.

Why use a watermark?

Protection — Discourages unauthorized use of your photos
Branding — Every shared image promotes your brand
Professionalism — Photographers, designers and businesses watermark all public images
Social media — When your photos get reshared, your logo travels with them

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