Watermark Image

Place text or a logo on an image, control opacity and position, or repeat it as a pattern.

What Watermark Image helps you do

Place text or a logo on an image, control the opacity and position, or repeat it as a tiled pattern. It labels images for ownership or status without a desktop design tool. The watermark is drawn onto a full-resolution copy and exported as PNG.

Watermarking runs in your browser; your image and logo are not uploaded.

How it works

These tools decode the image in your browser, draw it onto a canvas, apply the change, and encode a new file. Nothing is uploaded, so the result depends on the browser's own decoders and encoders rather than a server library. Re-encoding always creates a new file: metadata such as EXIF, GPS and color profiles is generally dropped, and JPEG or WebP output loses a little quality on every save. Canvas work is capped at roughly 36 megapixels, so very large images may be refused rather than processed slowly. Browsers normally apply EXIF orientation when decoding, so a phone photo usually appears upright before any rotation is applied.

How to use Watermark Image

  1. Open the image and choose text or logo mode.
  2. Enter the text or select a logo file.
  3. Set the size, opacity, color and position, or enable repeat.
  4. Apply the watermark, review the preview and download.

When to use it

  • Add a copyright notice to photos before sharing them.
  • Label draft or sample images with a status.
  • Tile a protection mark across an image preview.
  • Brand images for a client proof.
  • Add a company name to a product photo.
  • Mark internal screenshots as not for distribution.
  • Add a photographer credit to a set of images.

When not to use it

  • Do not use it as a security control; a watermark can be cropped or removed.
  • Do not place a mark over the only copy of an important detail.
  • Do not expect the mark to survive a subsequent crop.

Example

A semi-transparent text watermark placed in the bottom-right corner appears over the image on export. Text size is relative to the image width, so the same 12 percent setting looks consistent across resolutions. A repeated watermark steps across the image in a grid, which is harder to crop out than a single corner mark.

What you can do with Watermark Image

  • Add a text or image watermark.
  • Set the size from 3 to 50 percent of the width.
  • Set opacity from 5 to 100 percent.
  • Choose from seven positions or repeat across the image.
  • Pick the text color.
  • Download the watermarked PNG.

Example: pick the format for the job, then check the result

Keep the original. Every tool downloads a new file, and repeated conversion between lossy formats compounds artifacts.

Choose the format by purpose: PNG for sharp edges, text and transparency; JPEG for photographs; WebP when file size matters on the web.

Check transparency before converting to JPEG. Alpha is flattened onto a background color, and the choice is permanent in the output.

Look at the output at 100 percent. Smoothing, sharpening and watermark placement are easier to judge at full size than in a small preview.

For a batch, check the ZIP contents and file count. A single failed image is reported separately and does not stop the rest.

Note the output dimensions and file size. A larger pixel count does not always mean a better result, and a large PNG can be slower to load than a smaller JPEG.

What to know before you start

  • A watermark is a visual overlay and does not prevent copying or removal.
  • Very busy image areas can make a light watermark hard to read.
  • The output is always PNG, which can be large for photos.
  • There is no rotation or per-mark placement beyond the preset positions.

Common mistakes

  • Using a white mark on a light image and losing it.
  • Setting opacity too low on a busy background.
  • Forgetting to select a logo file in image mode.
  • Watermarking before cropping, then losing the mark.

Troubleshooting

If text is invisible, change the color or raise the opacity.

If the logo is stretched, check its aspect ratio; the tool preserves it.

If the mark is off the edge, choose a different position or reduce the size.

If Apply is disabled, no image is loaded yet.

Related standards and documentation

  • PNG is specified by the W3C and supports lossless compression and alpha.
  • JPEG is standardized as ISO/IEC 10918 and is lossy.
  • WebP is a Google format with both lossy and lossless modes.
  • sRGB (IEC 61966-2-1) is the usual color space for web images.
  • EXIF (CIPA DC-008) stores camera settings and can include GPS coordinates.
  • ICC profiles describe a device's color gamut, and most canvas exports do not preserve them.
Local, lossy, final
  • Keep the source file.
  • Match the format to the use.
  • Check alpha and size.
  • Inspect the export.