ALLYX ONE
100% browser-based · zero uploads

Image Watermark

Add a text or logo watermark to any image for free — no sign-up, no uploads, nothing to install. Choose your watermark, drop it where you want it, fine-tune the opacity and rotation, and download the result in seconds. Everything happens right in your browser, so your photos never leave your device.

Drop an image here

or click to browse — JPG, PNG, WebP, GIF up to 50 MB

How It Works

This free online image watermark tool composites everything in your browser — no upload is ever sent to a server.

  1. 1. Choose your image

    Click the upload area or drag and drop a JPG, PNG, WebP, or GIF from your device. It loads into the tool instantly via a Blob URL — nothing leaves your computer.

  2. 2. Pick text or logo watermark

    For a text watermark, type your copyright or brand name and pick a font, color, and size. For a logo watermark, upload a PNG (transparency is preserved) and adjust its size as a percentage of the image width.

  3. 3. Position, opacity, rotation

    Pick one of nine anchor positions or enable tiling to repeat the watermark across the whole image. Use the opacity slider to make it subtle or bold, and the rotation slider to angle it. The preview re-renders on the fly using HTML5 Canvas.

  4. 4. Apply in your browser

    Hit Apply watermark and the browser draws the original image plus your watermark at full resolution onto an offscreen <canvas> using drawImage(), fillText(), and globalAlpha. canvas.toBlob() then encodes the result as JPG, PNG, or WebP locally — no upload bar, no waiting.

  5. 5. Download your image

    Click Download and the file saves directly to your device. Choose JPG, PNG, or WebP and adjust the quality before saving.

Why users love this tool

  • Your images never leave your device — everything is composited in your browser, not on our servers, so there is nothing to intercept or store.
  • No watermark on the watermark — we never add our own branding to your output.
  • Real-time preview — every slider and color change updates the canvas instantly.
  • Works on any device — phone, tablet, or desktop; no app or installation required.
  • Completely free — no account, no usage limits, no subscriptions.

Frequently Asked Questions

Are my images uploaded to a server?

No. All watermarking happens locally in your browser using the HTML5 Canvas API. Your images and your logo are never sent to or stored on any server.

Is this image watermark tool free?

Yes, completely free. No account required, no usage limits, and the tool itself never adds branding to your output.

Can I add a logo as a watermark?

Yes. Switch to the "Image / logo watermark" tab and upload a PNG, JPG, or WebP. PNGs with a transparent background composite the cleanest.

Can I tile the watermark across the whole image?

Yes. Enable "Tile across whole image" below the position grid to repeat the watermark in a regular pattern across the entire canvas — perfect for protecting proofs from screenshot reuse.

Can I rotate or fade the watermark?

Yes. The rotation slider tilts the watermark from -90° to +90° and the opacity slider sets transparency from 5% to 100%. The preview updates live.

What image formats are supported?

Upload JPG, PNG, WebP, or GIF images up to 50 MB. Download as JPG, PNG, or WebP with adjustable quality.

Does it work on mobile?

Yes. The tool works in any modern browser on any device — no app or download needed.