AI Signature Generator — Create Professional Signatures in Seconds

The Problem with Traditional Digital Signatures

You need to sign a PDF right now. But you don't have a pre-scanned signature saved on your device. Do you print the document, sign it by hand, scan it back, and convert it to PDF? That's at least 15 minutes wasted.

The AI Signature Generator in PDFlys eliminates that entire workflow. Type your name, pick a style you like, and you have a professional signature ready to place on any PDF — all without leaving your browser.

Why This Feature Matters

Digital signatures are required for contracts, forms, applications, and legal documents. But creating one has always been inconvenient:

• Scanning is slow: Print, sign, scan, convert — too many steps
• Trackpad signatures look unprofessional: They're shaky and childish
• Image editors are overkill: Opening Photoshop to create a signature wastes time

With the AI Signature Generator, you get a handwritten-style signature in seconds — no installs, no accounts, no friction.

How to Generate and Add a Digital Signature to PDF

Follow these steps to create and apply your signature to any PDF document.

Step 1: Open the Sign PDF Tool

Navigate to the PDFlys Sign PDF tool. No account required.

Step 2: Type Your Name

Click the "Generate" tab (the default view). Type your name in the text field. You'll instantly see six different handwriting-style signature previews rendered in real time.

Step 3: Choose Your Style

Browse the six signature styles. Each uses a unique handwriting font and natural variation. Click "Regenerate" to see different variations of the same fonts if you want more options.

Step 4: Select a Color (Optional)

Click the color picker to change your signature color. Black is standard, but blue is also commonly accepted for business documents.

Step 5: Generate Your Signature

Once you've picked a style and color, click "Use This Signature." Your custom signature is generated as a transparent PNG image — processed entirely in your browser.

Step 6: Place Your Signature on the PDF

Upload your PDF document. Your generated signature appears as a draggable element. Position it wherever you need to sign, resize if necessary, and click "Save."

Your signed PDF downloads immediately. The entire process takes less than 60 seconds.

What Makes This Different from Other Signature Tools

Most online signature generators either require you to draw with a mouse (which looks terrible) or upload a pre-made signature image (which defeats the purpose). PDFlys generates signature images client-side using six professionally selected handwriting fonts and deterministic variations.

Every signature is unique to your input. The generator uses your name as a seed to apply subtle styling variations, so even if someone else types the same name, their previews will look different.

Tips for Professional Digital Signatures

• Use your full legal name for contracts and legal documents
• Use initials for internal approvals or quick sign-offs
• Match the document's color scheme: Black for formal documents, blue for business, or custom colors for branded materials
• Size your signature appropriately: It should be legible but not oversized
• Place it near signature lines: Don't float your signature randomly on the page

Frequently Asked Questions

Does the signature generator send my name to a server?

No. Everything runs locally in your browser using JavaScript and HTML5 canvas. Your name, the generated images, and any PDFs you upload stay on your device at all times.

Is the AI Signature Generator free to use?

Completely free — generate as many signatures as you want, sign as many PDFs as you need. No account required, no usage caps, no hidden costs.

Can I use these signatures for legal documents?

Digital signatures are legally accepted in most jurisdictions, but requirements vary. For contracts and legal documents, check your local regulations. Many countries accept typed or generated signatures as valid if both parties agree.

Can I save my generated signature for reuse?

Yes. PDFlys has a dedicated Save Signature feature that lets you store up to 10 signatures in your account. Once saved, your signatures appear instantly every time you open the Sign PDF tool — no need to regenerate them. See our post on saving and reusing signatures for a full walkthrough.

How is the Generate tab different from Draw and Upload?

The "Generate" tab creates professional handwritten-style signatures from typed text using six font styles. The "Draw" tab lets you sign with your mouse or trackpad. The "Upload" tab accepts a pre-made signature image. All three options feed into the same placement and saving pipeline. Note: the Generate tab's six handwriting fonts are separate from the four generic type styles (Serif, Cursive, Sans-serif, Monospace) available in the Type tab.

Complete Your Signing Workflow

Once your document is signed, these tools can help you finish the job:

• Lock the signed document with password encryption using Protect PDF
• Add dates, reference numbers, or notes with Add Text to PDF
• Combine the signed page with other documents using Merge PDF

If you frequently sign documents, pair the AI Signature Generator with the Save Signature feature to skip the generation step entirely on future visits.