Need to sign a PDF but don't have a printer nearby? You don't need one. You can add a legally recognised electronic signature to any PDF document right in your browser — free, private, and done in under 60 seconds. Here's exactly how.
100% in your browser — Your PDF never leaves your device. All signing happens locally in your browser using client-side JavaScript, so nothing is uploaded to any server.
Why Stop Printing to Sign?
Printing, signing by hand, and scanning a document is slow, wasteful, and often produces low-quality results — skewed pages, grainy images, and bloated file sizes. Electronic signing is faster, produces pixel-perfect results, and is legally valid in most countries under laws like the EU eIDAS Regulation and the US ESIGN Act.
Instant
Sign and download in under 60 seconds — no setup or account needed.
Private
Your file stays on your device. Nothing is sent to our servers.
Legally Valid
Electronic signatures are recognised under ESIGN, eIDAS, and similar laws worldwide.
Free Forever
No subscription, no watermark, no page limit — always free.
How to Sign a PDF Online — Step by Step
Follow these steps to sign any PDF document in your browser:
Open Sign PDF Online
Go to Sign PDF Online on Free Digital Utilities. No account or download required.
Upload Your PDF
Click the upload area or drag and drop your PDF file. Your document loads directly in your browser.
Create or Add Your Signature
Click "Add Signature" — you can draw your signature with a mouse or finger, type it in a handwriting style, or upload a saved PNG of your signature.
Position and Resize
Drag your signature to the correct signature line on the document. Use the corner handles to resize it to fit neatly.
Download the Signed PDF
Click "Download Signed PDF". Your signed document saves instantly to your device — ready to email or share.
Three Ways to Add Your Signature
Our Sign PDF tool gives you three options for creating your signature:
- Draw — use a mouse, trackpad, or touchscreen to draw your real handwritten signature.
- Type — enter your name and choose from handwriting-style fonts for a clean, consistent result.
- Upload — use a pre-saved PNG with a transparent background (ideal if you already have a clean signature image from our Digital Signature Generator).
Pro tip: save your signature once, use it everywhere — Use the Digital Signature Generator to create and download a transparent-background PNG of your signature. Upload it every time you need to sign — consistent, clean, and professional.
Is an Electronic PDF Signature Legally Valid?
In most countries, yes. Electronic signatures are recognised under:
- ESIGN Act (USA) — electronic signatures have the same legal effect as handwritten ones for most contracts.
- eIDAS Regulation (EU) — defines three tiers of electronic signature; a basic electronic signature is valid for most everyday documents.
- Electronic Transactions Act (Australia, Singapore, NZ) — similar recognition for commercial documents.
For certain document types — notarised affidavits, property title transfers, court filings, or wills — consult a legal professional, as specific witnessing or notarisation requirements may apply.
Documents that may require wet ink or notarisation — Property deed transfers, court-filed documents, certified affidavits, and some government forms may still require a handwritten ("wet") signature. Check local requirements before using electronic signatures for these.
Tips for Professional-Looking Signed PDFs
- Use a transparent PNG signature — avoids any white box around your signature on the document.
- Scale it to match the signature line — a signature that's too large or too small looks unprofessional.
- Check page by page — if signing a multi-page document, scroll through every page to ensure you haven't missed a signature or initial box.
- Save immediately after signing — browser tabs can close unexpectedly; download as soon as you're done.
- Compress before emailing — signed PDFs can grow slightly in file size; use our PDF Compressor to reduce it before sending.
Other PDF Tools You May Need
After signing, our PDF Tools suite can help you with:
- PDF Merge — combine your signed document with cover letters or annexures.
- PDF Compress — reduce file size before emailing.
- PDF Watermark — add "Confidential" or "Draft" text to sensitive documents.
- Word to PDF — convert a Word document to PDF first, then sign it.
Ready to sign your PDF? It takes under 60 seconds — free, no account needed.
Sign PDF Now →Can I sign a PDF on my phone?
Yes — the Sign PDF tool works on any smartphone or tablet browser. Drawing your signature with your finger on a touchscreen often gives the most natural-looking result.
Is there a file size or page limit?
No hard limit — the tool processes files entirely in your browser, so performance depends on your device. Very large files (100+ pages) may take a few seconds to render.
Can I add multiple signatures to one document?
Yes — you can add as many signature instances as needed, placing them on different pages or signature lines within the same PDF.
What if my PDF has existing form fields?
Some PDFs have interactive signature fields built in. Click directly on those fields to fill them. For PDFs without interactive fields, you can freely place a signature image anywhere on the page.
Can I sign a Word document (.docx) directly?
Not directly — but you can convert your Word file to PDF first using our Word to PDF converter, then sign the resulting PDF. Alternatively, use our Sign Word Document Online tool to sign .docx files without converting.
