Signature & Seal Maker
Make a transparent PNG of your signature or seal: draw it, scan a signature or stamp from a photo (the paper becomes transparent), or create a Japanese seal (hanko) from your name or any text. The image keeps its real size, so it is placed at that size in PDF Editor. Everything runs in your browser and nothing is uploaded.
What is Signature & Seal Maker?
Signature & Seal Maker turns your signature or seal into an image with a transparent background, ready to put on PDFs and documents. There are three ways to make one:
| Tab | What it does |
|---|---|
| Draw | Draw your signature with a mouse, a finger or a stylus. Saved as PNG or as a vector SVG |
| Scan | Take a photo or scan of a signature or a stamped seal on paper. Only the ink is kept and the paper becomes transparent, even with shadows or uneven light |
| Text | Type your name or any text to make a Japanese seal (hanko): round, square or date stamp |
How to use
- Choose a tab and make your signature or seal.
- Set the size in millimeters (for example 50 mm for a signature, 10.5–18 mm for a seal).
- Click Download PNG. In PDF Editor, add the PNG with the image button: it is placed at the size you set.
In the Draw tab, Ctrl+Z / ⌘Z undoes the last stroke, and Ctrl+Shift+Z / ⌘⇧Z or Ctrl+Y redoes it. Clear can be undone too.
Scan options
| Option | Description |
|---|---|
| Ink | Any color: everything that differs from the paper. Red seal: only red ink, so printed text under a seal is left out. Dark ink: only black or blue ink |
| Strength | Higher picks up fainter ink; lower ignores dirt and shadows |
| Color | Keep the original ink color, or make it one color (vermilion, black, navy) |
| Remove specks | Removes small dots of dirt and dust |
| Crop | Drag on the photo to choose the part with the signature or seal. Leaving out the table, shadows and the edges of the paper gives a cleaner result. Drag the frame to move it and its corners or edges to resize it |
| Zoom | Zoom in with the buttons, by pinching, with Ctrl / ⌘ + mouse wheel, or with the + and − keys, to crop precisely. Scroll to move around |
| Rotate | Turn 90° with the buttons, or straighten a tilted photo with the slider or by typing the angle (0.1° steps). A grid appears while you rotate |
Tips: take the photo in bright, even light, fill the frame with the signature or seal, and avoid strong shadows.
Text options
- Round: up to 3 characters in one line, 4 or more in two lines.
- Square: characters in lines, as close to a square as possible (for example a company seal).
- Date stamp: a top line (department or company), the date in the middle, and a bottom line (name).
- Vertical / Horizontal: vertical writing puts the lines in columns from right to left; horizontal writing puts them in rows from top to bottom.
- Line breaks: press Enter in the text to choose where each line (column) starts. Without line breaks, the text is split automatically. Each character is stretched to fill its line.
- Font: the Mincho or Gothic font on your device, free Japanese fonts (Noto, Shippori Mincho, the brush fonts Yuji Syuku, Yuji Boku and Zen Kurenaido, Klee One, Zen Maru Gothic, Dela Gothic One and more; downloaded once when you choose one), a font installed on your device by name, or your own font file (.ttf, .otf, .woff, .woff2).
FAQ
Is my signature uploaded?
No. Drawing, scanning and the seal are all made in your browser. Free fonts are downloaded from a CDN (jsDelivr), but your text is not sent. The drawing, the settings, the scanned photo and your font file (up to 20 MB in total) are saved in this browser's storage with the tool, and are included if you share the tool with a link. To not keep the photo, turn off Keep files in the tool's settings.
Is a digital seal or an image of my signature legally valid?
It depends on the document and the country. An image of a signature or seal shows intent, but it is not a cryptographic digital signature. Check what the recipient accepts.
Why does the seal not look like a real hanko font?
Real seals often use seal-script fonts, which are rarely free. Try the brush fonts (Yuji Syuku, Yuji Boku), or choose a seal font you have: type the name of an installed font, or choose its font file.