OneTools

Add Watermark to Image

Place a text or logo watermark with adjustable position, size, and opacity.

Processed in your browserFiles stay on your device.No sign-up requiredStart using the tool immediately.

Options

Watermark type
55%
20%
Your files are processed locally in your browser and never uploaded.

How it works

  1. 1UploadChoose the image to protect.
  2. 2CustomizeAdd text or a logo and adjust its appearance.
  3. 3DownloadApply the watermark locally and save it.

Why use OneTools

  • Text or logoUse a label or a separate brand image.
  • Flexible placementChoose common positions and tune size and opacity.
  • Browser privacyBoth images remain on your device.

Frequently asked questions

Can I use a transparent logo?

Yes, upload a PNG or WebP logo with transparency.

Can I change opacity?

Yes, opacity and size are adjustable.

Are files uploaded?

No, the watermark is rendered in your browser.

Popular use cases

  • Brand product photos
  • Mark preview images
  • Credit photography