converteo.app

Add Watermark to Images

Overlay a text watermark on your images — processed in your browser

Processed in your browser — 100% private

A text watermark protects your work from casual reuse: portfolio shots, product photos, draft mockups and any image you share publicly before it's ready for prime time. Our tool burns a customisable watermark directly into your images — opacity, position, and placement are all adjustable — in your browser, without uploading anything. Watermark a single image or a full photoshoot in one pass.

How to watermark images

  1. Drop your images into the window.
  2. Type the watermark text, adjust opacity and pick a position.
  3. Download each watermarked image, or the batch as a ZIP.

Supported formats

JPG, PNG, WebP. Output keeps the original format and dimensions.

Why watermark with converteo.app

  • Images never leave your browser — ideal for unreleased work.
  • Six placement options: corners, center, diagonal and full tile.
  • Batch mode applies identical watermark settings to every image.
  • Free, unlimited, no sign-up.

Watermark Images — Frequently asked questions

Can I use a logo image instead of text?
Currently only text watermarks are supported. Logo-based watermarks are a roadmap item.
Will the watermark be easily removable?
A high-opacity tiled watermark is very difficult to remove cleanly. A low-opacity corner watermark is more decorative and easier to crop out.
Does watermarking compress the image?
JPG and WebP outputs are re-encoded at near-original quality. PNG outputs stay lossless.
Is my image sent to a server?
No. Watermarking runs entirely in your browser via the Canvas API.