PDF stamps — DRAFT, APPROVED, CONFIDENTIAL, VOID, COPY — communicate a document's status at a glance. Here's how to add any text stamp to a PDF without Adobe Acrobat.
Go to pdfeditor.onl/pdf-studio and upload your PDF.
Select the Text tool. Click the center of the page. Type your stamp text (DRAFT, APPROVED, CONFIDENTIAL). Choose a large font size (48–72pt). Select red or dark blue. Choose bold style.
Tip: For an authentic stamp appearance, rotate the text slightly about 20–30°. Red DRAFT or blue APPROVED stamps rotated 30° are the standard professional look.
Use the Annotation / Pen tool to draw a rectangle border around the stamp text. This creates the classic rectangular rubber-stamp appearance.
Navigate to each page that needs the stamp and repeat. Click Download PDF when done.
Currently the stamp is applied page by page. For documents requiring a stamp on every page, add it to each page before downloading.
Yes. Use the Watermark tool which supports opacity control — set to 20–40% opacity for a classic semi-transparent background stamp effect.
Yes — all PDF Studio tools are completely free.