Signature Sketch is a free handwritten signature generator that creates transparent PNG signatures entirely in your browser without requiring any sign-up or data upload.
What is Signature Sketch?
Signature Sketch is a web-based tool that lets you create digital handwritten signatures by drawing with your mouse, trackpad, or finger, or by typing your name and selecting a handwriting font style. It outputs transparent PNG images or PDFs ready for use in Word, Google Docs, and email. The tool runs completely locally on your device—no data ever leaves your browser.
Key Features
- Two signature modes — Draw with a smooth ink algorithm using mouse, trackpad, or touchscreen; or Type a name and choose from multiple handwriting font styles (Elegant, Classic, Formal, Marker, Bold, Brush) to auto-generate a signature.
- 100% local processing — No data is uploaded to any server; the signature exists only in your browser's temporary memory and is deleted on page refresh.
- Transparent PNG download — Exports with a perfectly transparent background, ready to insert into Word, Google Docs, or PDF without any white box.
- PDF export — Download the signature as a PDF document for printable use.
- Email footer creator — Generate an HTML email signature block with your drawn signature, full name, job title, company, email, phone, and website, and copy the code for Gmail or Outlook.
- Mobile-friendly canvas — Works on iPhone, iPad, and Android devices with touch input for finger signing.
- Customizable appearance — Adjust ink color (black, blue, red) and stroke thickness to match your style.
- No sign-up required — No email, credit card, or personal information needed; just draw and download.
Who is it for?
- Freelancers and independent contractors — Quickly sign contracts, invoices, and proposals without printing or scanning.
- Remote employees — Add handwritten signatures to internal documents, expense reports, or authorization forms directly from a browser.
- Small business owners — Create consistent signature branding for letters, quotes, and official correspondence.
- Students and academics — Sign forms, consent documents, or collaboration agreements without needing physical paperwork.
What can you do with Signature Sketch?
- Sign contracts digitally — Draw your signature and download as transparent PNG to overlay on contract PDFs in Word or Google Docs.
- Create a professional email signature — Use the email footer generator to produce a polished HTML signature for Gmail or Outlook, including your handwritten signature.
- Add signatures to digital forms — Generate a transparent signature and insert it into PDF form fields or online document editors.
- Sign documents on mobile devices — Use the touch-friendly canvas on a phone or tablet to sign on the go without a computer.
How does it work?
- Choose your preferred input mode — draw directly on the canvas using mouse, trackpad, or touch, or type your name and pick a handwriting font style.
- Customize the ink color (black, blue, red) and stroke thickness (or font style) to match your desired look.
- Download your signature as a transparent PNG or PDF, or use the email footer tool to copy HTML code for Gmail/Outlook.
FAQ
Is Signature Sketch free?
Yes, the tool is completely free to use with no sign-up, no watermarks, and no paywalls. All features, including transparent PNG downloads and email footer creation, are available at no cost.
Does Signature Sketch save my signature?
No. Your signature is processed entirely in your browser's memory and is deleted as soon as you refresh or close the page. No data is stored on any server.
Can I use the PNG signature in Word or Google Docs?
Yes. Download the transparent PNG and insert it into your document using "Insert" > "Image". The transparent background makes it appear as if you signed directly on the paper.
How do I create an email signature with Signature Sketch?
After drawing your signature, click the "Email Footer" tab and fill in your details (name, job title, company, email, phone, website). The tool generates an HTML code that you can copy and paste into Gmail or Outlook settings.
