Signature Maker — Draw Your Signature Online
Sign with your mouse, finger or stylus on the pad below, then download a transparent PNG cropped tight to the ink. Nothing is uploaded and nothing is stored.
Sign here — drag with your mouse, finger or stylus
Draw something to see the download size
This tool draws a picture of your signature. It is a plain image file, not a certified digital or electronic signature — it carries no encryption, no identity check and no audit trail. For agreements that must be legally verifiable, use a dedicated e-signature service.
What this signature maker actually does
The pad is an HTML canvas listening to pointer events, so one code path serves a mouse, a trackpad, a finger and a pressure-sensitive stylus. Every sample your device reports is recorded with its position and its timestamp, and on high-refresh digitisers the extra samples that pile up between two animation frames are read back out of the coalesced event list as well — a fast flourish is captured at the rate the hardware produced it, not the rate the screen redraws. Those raw samples are never joined with straight lines. Each sampled point becomes the control point of a quadratic Bezier curve and the curve passes through the midpoints between neighbouring samples. That midpoint construction is what makes the result read as handwriting rather than as a seismograph trace, and because every piece starts exactly where the previous one ended, a stroke has no visible joints. Thickness varies along the stroke. If your device reports genuinely changing pressure, an Apple Pencil or a graphics tablet pen for instance, that reading drives the line width directly. Mice report a constant 0.5 and many touchscreens report one fixed value forever, so the presence of a pressure field proves nothing; the tool trusts pressure only when it actually varies during a stroke and otherwise falls back to pointer speed, drawing slow deliberate curves thicker and fast flicks thinner, between 40 and 160 percent of the pen size you picked. Each width is filtered against the previous one so a single jittery sample cannot leave a bead on the line. On download the strokes are re-rendered off screen at three times the pad size onto a fully transparent canvas, the alpha channel of every pixel is scanned to find the bounding box of the ink, and the image is cropped to that box plus the padding you chose. The PNG keeps its alpha channel; the JPG option paints the crop onto white first, because JPEG has no transparency at all. Strokes live only in the page's memory — nothing is uploaded, and reloading the tab discards them.
Why draw a signature instead of scanning one
Most documents that need a signature are digital now, and the usual workaround is not. Printing a contract, signing it, scanning it back and cropping the result costs ten minutes and a printer, and the scan arrives grey, skewed and framed by the rest of the page. Drawing straight on screen skips all of that and produces a cleaner image than a scanner ever will, because there is no paper texture, no shadow and no JPEG noise to clean up afterwards. The transparent PNG is the part that matters. Word, Google Docs, Pages, Acrobat, Figma and every email client will lay it over existing text without the white rectangle a scanned signature drags along, so you can drop it onto a signature line, an invoice footer or a letterhead and whatever sits underneath still shows through. Because the file is cropped to the ink rather than to the pad, what you insert is the signature itself instead of a mostly empty block that shoves surrounding paragraphs around. Phones are the natural place to do this. A finger on a touchscreen is far closer to a pen than a mouse will ever be, and the pad accepts touch properly, so signing a delivery note or a permission slip from a phone takes seconds. Teachers marking work, freelancers stamping invoices, illustrators building a signing watermark and anyone who has been asked to return a signed form all end up needing the same small transparent file. If your signature already exists on paper, this is the wrong page — photograph it and run it through our signature background remover, which knocks the paper white out of the photo. This tool is for signing on the spot.
How to draw and download your signature
Four steps, no account and no upload. The whole thing happens on this page.
Pick an ink colour and a pen size. Leave the variable thickness option on if you want the stroke to taper the way a real nib does; turn it off for an even, uniform line.
Sign on the pad. Drag with the mouse, or use a finger or stylus on a touchscreen — the page will not scroll under your hand while you draw. Each pen-down to pen-up counts as one stroke, so Undo removes the last stroke and Ctrl or Cmd plus Z does the same.
Check the download size shown under the pad. It updates as you draw and as you move the padding slider, and it is the size of the cropped ink, not of the pad.
Download the transparent PNG for documents, slides and email footers, or the white-background JPG if you need a format without an alpha channel. Insert the PNG in Word or Google Docs and set text wrapping to In Front Of Text so it sits over the signature line.
Frequently Asked Questions
その他の画像ツール
画像編集のニーズに応える他の強力なツールをご覧ください
画像圧縮
サイズ縮小
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顔をぼかす
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HEIC→JPG
iPhoneのHEIC写真をJPGに変換
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ファビコン ジェネレーター
完全なアイコンセットとHTML
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画像から色を抽出
Base64 to Image
Decode Base64 back to an image
HEIC to PNG
Convert iPhone HEIC photos to lossless PNG
Text Behind Image
Put text behind the subject of a photo, entirely in your browser
Color Picker
Get the HEX, RGB and HSL of any pixel
Signature Background Remover
Ink from paper, on transparency
Transparent Background Maker
Make a background transparent