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Converter Hub / Privacy image workflow

Add privacy watermarks and mosaic locally.

Repeat a clear text notice across a photo or ID image, then paint mosaic blocks over a selected area before exporting a new PNG.

Back to Converter HubCanvas browser-local processing

Watermark and mosaic settings

All processing happens in this browser tab. Your source image stays on your device.

Drag on the preview to mosaic a local area.

Watermark progress0%

Choose an image to begin.

Final preview

Features and usage guide

What is this tool for?

Add repeated text watermarks and brush local mosaic over selected areas with Canvas, then export a new PNG without uploading the source image.

3-step quick guide

  1. 1
    Select a local image and choose your starting settings.
  2. 2
    Adjust the controls and review the browser preview.
  3. 3
    Export the result locally without changing the source file.

Privacy statement

Your image remains in the current browser session. Preview and export use local File, Canvas and Blob APIs.

There is no file-upload endpoint; speed depends on your device and browser support.

Frequently asked questions

Are my images uploaded?

No. The page uses browser APIs and does not send image bytes to a server.

Will the original file be changed?

No. All exports are new Blob or Canvas results; the selected source file remains unchanged.

Which browsers work best?

Use a current desktop or mobile browser with Canvas and File API support. Large images may require more device memory.