Image Tools

Image Watermark

Add custom text watermarks to images with configurable font size, opacity, and positioning.

Run tool

This online tool applies a custom text watermark directly onto your image. Upload your source picture, type the required notice or label, and adjust formatting options to fit your layout. You can customize the overlay text, change the font size from the default 36 points, and tune the opacity on a scale from 0.0 to 1.0. A lower opacity creates a subtle background marker, while a higher value keeps the text sharp and prominent. Choose from five placement presets, including center, top-left, top-right, bottom-left, or bottom-right. If you enter a position that is not recognized, the text will be centered automatically. Once you run the generator, it places your custom text over the graphic and delivers the final image in PNG format. The tool handles single image uploads without altering your original source file.

Instructions

  1. Select and upload your source image file.
  2. Enter the text string you want to display across the image.
  3. Set the font size and pick an opacity value between 0.0 and 1.0.
  4. Select your preferred placement position from top-left, top-right, bottom-left, bottom-right, or center.
  5. Click Run to generate the watermarked image, then download the PNG file.

Examples

  • Adding a subtle copyright notice to a photo: upload a portrait image, set the text to Copyright 2025 Studio, set opacity to 0.3, choose bottom-right position, and set font size to 24.
  • Marking an internal draft proof: upload a layout diagram, set text to DRAFT REVIEW, opacity to 0.6, position to center, and font size to 48.

FAQ

What image format does the tool export?

The tool delivers the processed graphic as a standard PNG image.

Which watermark positions are supported?

You can position text at top-left, top-right, bottom-left, bottom-right, or center. If you enter a position that is not listed, the text will be centered automatically.

Can I overlay an image logo instead of text?

No, this utility specifically renders text watermarks over the base picture.

What happens if I do not provide custom text?

The generator uses the default text Watermark at 0.5 opacity and 36 font size centered on the image.

Embed this tool

Add this working SmartPlusLab tool to your website with the code below.