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Image watermark

Free online tool to add text or image watermarks with drag positioning, grids, tiling, rotation, and opacity controls

About this tool

Watermarking overlays text or a graphic and controls its position, spacing, opacity, scale, rotation, and repeated layout. A single anchor suits a credit or brand bug. A tiled mark is harder to remove with a simple crop but interferes more visibly with the image.

The tool previews in the browser and exports PNG, JPG, or WebP. A watermark communicates source and usage constraints but cannot technically prevent screenshots, cropping, or repainting, so valuable assets still need appropriate licensing, access control, and source-file management.

How to use it

  1. Upload the base image and choose a type

    Select text or image watermarking; a sharp transparent PNG works well for a graphic mark.

  2. Adjust style and layout

    Set color, font, opacity, anchor, or tile spacing and check readability over different image regions.

  3. Preview and export

    Confirm that critical subjects and required information remain visible, then choose a format for transparency and size needs.

Supported range and limits

Watermark types
Text or an image
Positioning
Free drag, nine-point placement, tiling, or diagonal tiling
Adjustable
Opacity, rotation, spacing, and text size or image scale
Does it stop image theft
Not entirely. A watermark is a visible mark on the pixels and can be cropped out or weakened with inpainting
Harder to remove
Large, semi-transparent diagonal tiling that crosses the subject is far more resistant than a small mark in a corner
Output
The watermarked image; the original is untouched

When you would use it

  • Publishing a work preview

    Add a subtle credit to photography, illustration, or design work to distinguish previews from delivered originals.

  • Marking internal material

    Tile a project name, date, or confidentiality label so a detached file retains its context.

  • Signing sample images before sending them out

    Adding a byline and a purpose note to samples in a submission or pitch makes casual reuse less likely.

What to know before you start

  • Keep watermark text concise and sufficiently contrasted; very low opacity can disappear over light or detailed regions.
  • JPG has no transparent background. Export PNG or WebP when transparency in the base image must remain.
  • A watermark does not replace registration, contracts, or access control, and it must not cover attribution that the law or license requires.

Related concepts

opacity
How opaque the watermark pixels are; lower values allow more of the base image to show through.
tiled watermark
A mark repeated at fixed spacing across the canvas, reducing the chance of removal through edge cropping alone.

Frequently asked questions

Does Add watermark upload my files?
No. Images are rendered locally in your browser via Canvas and exported on the spot. Files are never uploaded to a server.
What kinds of watermarks are supported?
Both text and image watermarks. Text watermarks let you tune font, size, color, bold, italic and stroke; image watermarks accept common formats like PNG, JPG and WebP, with adjustable size.
How can I position the watermark?
Three layouts: single, tile and diagonal. In single mode you can snap to a nine-grid position or drag the watermark anywhere on the preview. Tile/diagonal layouts expose horizontal and vertical spacing controls.
Which output formats can I choose?
PNG, JPG, or WebP. JPG and WebP also offer quality controls. JPG does not support transparency; transparent areas are filled with white.
Where should the watermark go?
A small mark in a corner is least intrusive and easiest to crop away. Semi-transparent diagonal tiling across the subject is hardest to remove but clearly affects readability. Choose by what the image is for.
Text or image watermark?
A text watermark can carry specifics; purpose, date, recipient; which helps trace where a leak came from. An image watermark suits consistent brand marking. Positioning and opacity work the same for both.

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