Image Watermark Adder

Add a text or logo watermark to any image — adjustable position, size, opacity, and rotation.

Image Watermark Adder
Drop an image here or click to browse
PNG, JPG, WEBP

📐 How to Use

  1. Drag and drop the image you want to watermark, or click to browse.
  2. Choose Text or Logo Image as the watermark type.
  3. For text, type your watermark and set its font size and colour. For a logo, upload an image and set its size.
  4. Adjust opacity and rotation, then pick a position — or enable Tile to repeat it across the whole image.
  5. Click Download to save the watermarked image.

🎯 When to Use This

  • Marking proof photographs sent to a client before payment, where a tiled mark across the frame discourages use of the unpaid files.
  • Adding a studio logo to the corner of portfolio images at a consistent percentage of width across exports of differing sizes.
  • Stamping a document photo with the purpose it was shared for, a common precaution when sending ID scans to a third party.

❓ Frequently Asked Questions

QDoes my image get uploaded anywhere?
No. The watermark is drawn directly onto a canvas in your browser using the Canvas API. Neither your photo nor your logo is ever uploaded to a server.
QCan I tile the watermark to make it harder to remove?
Yes — enable "Tile watermark across whole image" to repeat the watermark in a grid pattern over the entire photo, which is much harder to crop out than a single corner mark.
QCan I use a transparent PNG logo as the watermark?
Yes — upload a PNG logo with a transparent background and it will blend naturally onto the photo using the opacity you set.

ℹ️ About This Tool

A visible watermark is a deterrent and an attribution mark, not protection. It makes casual reuse awkward and keeps your name attached when an image is reposted, but anyone determined can crop a corner mark away or paint it out. Tiling across the frame trades some of the picture's clarity for a mark that cropping alone cannot remove.

Compositing happens on a canvas at the image's full natural resolution. Text is drawn in bold Arial between 12 and 200 pixels, up to 80 characters, in a color you pick; a logo is scaled to between 5 and 50 percent of the image width. Opacity runs from 5 to 100 percent and starts at 55, rotation spans -90 to 90 degrees, and the mark sits at one of nine anchors or repeats across a grid.

⚠️ Notes & Limits

  • Font size is measured in pixels on the full-resolution canvas, so 48 pixels reads as bold on a 1000 pixel image and nearly vanishes on a 6000 pixel one.
  • Text is a single line in bold Arial. There is no font choice, no line breaks, no outline or shadow, and no free positioning beyond the nine anchors.
  • JPEG and WEBP are written at a fixed quality of 0.92, and GIF or BMP sources come out as PNG, since the canvas writes only those three formats.
  • A corner watermark survives nothing tougher than a crop. Tile it when the image is going somewhere you will not be able to police.