How to Add a Stamp or Signature to Word, HWP, or PDF — No Scanner Needed

Need to stamp a contract or approval form? The old routine — print → stamp → scan → reattach — wastes time and leaves your document looking rough: fuzzy image quality, stray white boxes covering the text underneath. There has to be a better way.

There is. This guide shows you how to add a stamp or signature to Word, HWP, and PDF documents without a scanner. The trick is simple: use a transparent-background PNG stamp image.

Why the Print-and-Scan Method Falls Short

The traditional workflow looks like this:

1. Print the document.
2. Physically press your stamp onto the paper.
3. Scan it back with a scanner or a phone scanning app.
4. Reattach or re-upload the scanned file and send it.

The inconvenience alone is enough reason to stop, but the visual result is just as bad. Scanned stamps come in with a white rectangle that blocks the text underneath, and the image itself looks blurry or washed out. If you don't have a printer nearby, the whole process breaks down entirely.

The Key: Create a Transparent-Background PNG Stamp

Every problem with the scan method comes down to the white background. Switch to a transparent PNG and the stamp sits naturally on top of your document — no text hidden, no ugly box.

There are two ways to get a transparent PNG stamp:

• Use FreeSign's Stamp Generator — Go to freesign.kr/en/tools/stamp/, type your name, pick a style (hanko, round seal, or corporate seal), and download. The file saves as a transparent PNG from the start. No editing needed — this is the fastest option.
• Photograph your physical stamp — Stamp onto white paper, photograph it with your phone, then use an image editor to remove the white background and export as PNG. This takes a few extra steps but works if you need to replicate an existing seal exactly.

Once you have the file, you can reuse it indefinitely — no more printing or scanning for every single document.

Inserting a Stamp into Word or HWP

With your transparent PNG ready, inserting it into Word or HWP takes about thirty seconds.

1. Insert the image — In the menu, go to Insert → Picture and select your transparent PNG stamp file.
2. Set the layout to "In Front of Text" — Click the inserted image, then change the text wrapping to "In Front of Text" (Word: use the layout options icon that appears to the right of the image, or right-click → Wrap Text → In Front of Text; HWP: open image properties and choose "앞으로"). This lets the stamp float freely over the page content.
3. Drag to position and resize — Move the stamp over the signature line or seal area and adjust the size to match. Because the background is transparent, the text underneath stays fully visible — the stamp appears to sit right on the page.

Save in the original format (.docx, .hwp) to keep the stamp layer editable, or export to PDF to lock everything in place before sending.

Adding a Stamp to PDF — Using Fill & Sign

PDF files don't have a simple picture-insert option. Instead, use FreeSign's PDF Fill & Sign to place stamps, signatures, and text directly on the document — no scanner, no extra software.

1. Go to freesign.kr/en/tools/fill-sign/ and upload your PDF.
2. Choose a tool from the toolbar: stamp, signature, or text.
3. Click anywhere on the document to place it, then drag and resize to fit.
4. Save — the stamp is flattened into the PDF. No matter who opens it or which app they use, the stamp stays exactly where you put it.

You can fill in text fields on the same screen, so form completion and stamping happen in one pass.

Tools Worth Bookmarking

Combine these tools to handle the full document workflow without leaving your browser.

• Stamp Generator — freesign.kr/en/tools/stamp/: Generate a hanko, round seal, or corporate stamp as a transparent PNG instantly.
• PDF Fill & Sign — freesign.kr/en/tools/fill-sign/: Place stamps, signatures, and text on any PDF and flatten to a final file.
• How to make a stamp online — Stamp generator guide (blog): Detailed walkthrough of stamp style options and download settings.
• PDF Fill & Sign guide — Fill & Sign PDF guide (blog): Step-by-step instructions for text input, signature placement, and saving options.

If you need to request a signature from someone else — for a contract, consent form, or approval — FreeSign's electronic signature feature lets you send the document and automatically records an audit trail when the recipient signs. No more chasing PDFs over email.

Frequently Asked Questions

Q. Can I use a regular JPG stamp image instead of a transparent PNG?
No — JPG does not support transparent backgrounds, so you'll end up with a white rectangle covering the text beneath the stamp. Always use a transparent PNG (or WebP) file.

Q. Where do I find the "In Front of Text" setting in Word?
Click the inserted image. A small layout options icon appears to the right. Click it and choose "In Front of Text." Alternatively, right-click the image → Wrap Text → In Front of Text.

Q. Will the stamp move when someone else opens the PDF?
No. FreeSign's PDF Fill & Sign flattens the stamp into the PDF on save, merging it with the page content. The position is locked regardless of which device or PDF viewer is used to open the file.

Q. Does this count as a legally valid electronic signature?
Inserting a stamp image is a visual mark, not a legally certified e-signature. For contracts or documents where a certified audit trail matters, use FreeSign's electronic signature feature instead.