Add Watermark
Stamp text watermarks onto images.
How to use the Add Watermark
Load your media
Drag a file onto the drop zone or use the file picker. A preview confirms the dimensions and format that were detected.
Adjust the output
Set quality, size or format options. The preview updates immediately so you can judge the result before exporting.
Export the result
Download the processed file. Because everything runs locally, processing speed depends on your device rather than a remote queue.
What Add Watermark is for
Add a repeated or single-line text watermark with adjustable opacity, colour, size and rotation. The result is flattened to a new image for easy sharing.
The Add Watermark is part of the Image & Video collection on ToolFlow. It is designed for one concrete job: stamp text watermarks onto images. Everything runs client-side, so you can use it with sensitive material without creating a copy on someone else's server.
Common use cases
- Protect draft photography
- Mark internal documents
- Brand a giveaway graphic
Good to know
- No account is required, and there is no usage limit on the browser tool.
- Processing happens locally. Files are read from disk and the result is written back to your downloads folder.
- Results are reproducible: the same input and options produce the same output, with no hidden server round-trip.
- If the tool needs a live data source, the page states it explicitly instead of silently failing.
Add Watermark FAQ
The questions people ask before using this tool.