Watermark Editor
Upload PDF or JPG → PNG watermark → position → Apply & Download
Back
Main file (PDF or JPG)
If preview doesn't appear, click "Render preview". If pdf.js is blocked by an extension, see debug log below.
Render preview
Clear (reload)
Watermark image (PNG)
PNG with transparency recommended
Scale (%) — watermark width relative to page width
Opacity (0-100)
Position preset (choose "Custom" to drag/click)
Center
Top left
Top right
Bottom left
Bottom right
Custom (drag or click)
Pages (optional, e.g. 1-3 or 1,3,5). Leave empty = all pages.
Apply & Download
After positioning the watermark visually, click "Apply & Download".
Upload a PDF or JPG and click "Render preview" (or wait briefly) to show the preview here.
Debug log: