Image Watermark
Add a text watermark to JPG, PNG, and WEBP images in your browser.
Live browser tool
Watermark an image
Add a PolyImg text watermark and export the result.
Drop an image here
Everything runs locally in your browser.
Key capabilities
Why teams ship with PolyImg
Browser-native processing
Canvas processing keeps your images on your device and gives instant feedback.
Practical format conversion
Convert between JPG, PNG, WEBP, and SVG with focused tools for everyday workflows.
Useful editing controls
Resize, crop, rotate, watermark, and adjust images without uploading them.
Private by default
Files are processed locally in the browser and are only saved when you download them.
Common FAQs
Need quick answers?