PrivConvert

Image tool

Watermark Image

Add a text watermark to an image.

Add your input

Your file stays in this browser.

Settings

Good to know1 file · 50 MB max
Upload a JPG, PNG, WebP, GIF, or BMP fileResult: PNG files
  • Your image stays in this browser while the tool runs.
  • Animated images may be saved as a single still frame.

Next tools

Keep working with this file

Add Text to ImageAdd a text caption or label to an image.Remove Image MetadataRemove hidden image details by saving a clean copy.Add Border to ImageExpand an image canvas and draw a solid border.Adjust ImageAdjust brightness, contrast, and saturation with pixel processing.

How it works

How to use Watermark Image online

  1. Upload a JPG, PNG, WebP, GIF, or BMP file. The tool validates the published file type and size limits before the run.
  2. 8 adjustable settings. Review these settings before processing.
  3. Run the tool in your browser, review the result, and download the png files.

Overview

Watermark Image with local-first browser processing

Add a text watermark to an image. Review supported input, output format, settings, browser requirements, and practical limits before starting.

Input

Upload a JPG, PNG, WebP, GIF, or BMP file

Output

PNG files

Limits

1 file · 50 MB max

Best for

Watermark Image use cases

  • Prepare the png files for sharing, archiving, or another file workflow.
  • Process the job in your browser without creating an account.
  • Check the published limits before processing larger or unusual inputs: 1 file · 50 mb max.

Processing

What happens in your browser

PrivConvert uses createImageBitmap, OffscreenCanvas, and Canvas 2D for this workflow. 8 adjustable settings. This tool checks for offscreen canvas support before running

Your image stays in this browser while the tool runs.

Related tools

Add Text to ImageRemove Image MetadataAdd Border to ImageAdjust ImageBatch Image CompressBatch Image Convert

FAQ

Watermark Image questions

See how privacy works

Is Watermark Image free to use?

Yes. This tool is free to use in your browser and does not require an account.

Are my files private?

Watermark Image uses createImageBitmap, OffscreenCanvas, and Canvas 2D in the browser. Selected files are processed locally when the required browser features are available, while application, library, model, security, and limited analytics requests may load separately.

What limits should I know about?

1 file · 50 MB max. Animated images may be saved as a single still frame.