RelahConvert

Watermark Image

RelahConvert adds watermarks to images entirely inside your browser. Add multiple text or logo watermark layers, drag them to any position, and batch apply to up to 25 images at once. No upload required. Your files never leave your device.

How to Add a Watermark to an Image Without Uploading

  1. Select your images — upload up to 25 base images. Click any thumbnail to switch between them.
  2. Add watermark layers — add text or logo watermarks. Drag each layer to position it anywhere on the image. Adjust opacity, size and color per layer.
  3. Download your watermarked images — single image downloads directly; multiple images download as a ZIP.

The Best Free Watermark Tool That Doesn't Upload Your Files

RelahConvert adds watermarks to images entirely inside your browser. Add multiple text or logo watermark layers, drag them to any position, and batch apply to up to 25 images at once. No upload required. Your files never leave your device.

Why Add a Watermark?

Why Add a Watermark?

Compress Image · Resize Image · Crop Image · Rotate Image

Can I add a logo as a watermark instead of text?

Yes — upload any PNG or JPG as a logo watermark layer alongside or instead of text layers.

Can I add multiple watermarks to one image?

Yes — add as many text and logo layers as you need. Each layer is independently positioned and styled.

Can I watermark multiple images at once?

Yes — upload up to 25 base images. All watermark layers are applied to every image in the batch.

Can I control the opacity of the watermark?

Yes — each layer has an independent opacity slider from 0% to 100%.

Do you store my images?

Never. All processing happens locally in your browser.

Last updated: 2026-05-24

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