Stamp Maker
Create round or square company stamps with custom text. Export as transparent PNG for PDF use.
Tip: Download as transparent PNG, then upload it as a signature image in PDF Sign to stamp any document.
Free online stamp maker
Create professional company stamps online — no design skills required. Choose between round stamps (common for official seals in China and East Asia) or square stamps (common for contract-specific seals). Customize the text, color, and style.
The stamp is exported as a transparent PNG file, which you can directly use as a signature image in any PDF signing tool, Word document, or image editor.
Stamp maker FAQ
Can I create both round and square stamps?
Yes. The stamp maker supports round and square layouts, each with its own text fields and live preview.
What file format does the tool export?
The stamp is downloaded as a PNG image, which works well when placing the stamp inside a PDF or Word document.
Can I use the stamp in the PDF signer?
Yes. After downloading the PNG, upload it into the Signpdf PDF signer and position it like any other signature image.