Sign PDF Online
Draw, type, or upload your signature — add it to any PDF in seconds. Nothing leaves your device.
Drag & Drop your PDF here
or click to browse files
Sign in the box below using your mouse or finger.
Type your name and choose a signature style.
Upload a PNG image of your signature (transparent background recommended).
Click anywhere on the page preview below to stamp your signature.
The Complete Guide to Signing PDF Documents Online
Electronic signatures have become an essential part of modern business and personal document workflows. Whether you're signing a contract, approving an invoice, or completing a legal form, adding your signature to a PDF no longer requires printing, signing, and scanning. Our free browser-based tool lets you sign any PDF document in seconds — with complete privacy and no software installation required.
What is an Electronic Signature?
An electronic signature (or e-signature) is a digital representation of your handwritten signature that can be applied to electronic documents including PDFs. It serves the same purpose as a physical signature — expressing your consent, approval, or identity — but in a fully digital format. Electronic signatures are legally recognized in over 60 countries under frameworks such as the eSign Act (USA), eIDAS Regulation (Europe), and the IT Act (India).
Instant & Paperless
Sign documents in seconds without printing, scanning, or mailing physical copies.
100% Private
All processing happens inside your browser. Your PDF and signature never leave your device.
Legally Recognized
E-signatures are legally valid for most document types in most countries worldwide.
Completely Free
No subscription, no account, no watermarks. Sign unlimited PDFs at no cost.
How to Sign a PDF Using This Tool
Our Sign PDF tool is built for simplicity. Here is a complete walkthrough of each step:
- Upload your PDF: Click "Choose PDF File" or drag and drop your document into the upload zone. The tool supports standard PDF files of any size.
- Create your signature: Choose from three methods — Draw (use your mouse or touchscreen), Type (enter your name in a handwriting font), or Upload (use a saved image of your signature).
- Place the signature: Click anywhere on the PDF page preview to position your signature. Use the resize controls to adjust size, and drag to reposition it precisely.
- Download the signed PDF: Click "Generate Signed PDF" to embed the signature permanently into the document, then download the final file to your device.
Three Ways to Create Your Signature
We offer three flexible signature input methods to suit everyone's preferences:
Draw Your Signature
Use your mouse, stylus, or finger (on touchscreen) to draw your signature directly in the browser canvas. You can choose from four ink colors (black, blue, red, green) and adjust the brush thickness for a natural, authentic look. This method produces the most personalized signature.
Type Your Signature
Simply type your name and select from four elegant handwriting-style fonts. This is the fastest option, ideal for users who want a clean, professional signature without drawing. The fonts are loaded from Google Fonts and render with smooth, calligraphic letterforms.
Upload a Signature Image
If you already have a saved PNG or JPEG image of your signature — perhaps scanned from a physical signature — you can upload it directly. PNG files with transparent backgrounds look the most natural when placed on documents.
Who Uses PDF Signing Tools?
Digital PDF signing is used across virtually every industry and personal context. Some of the most common use cases include:
- Freelancers and contractors signing client agreements, NDAs, and service contracts without expensive software subscriptions.
- Small business owners approving purchase orders, vendor agreements, and partnership documents.
- Students signing enrollment forms, permission slips, and scholarship applications digitally.
- HR professionals processing employment offer letters, onboarding documents, and policy acknowledgments.
- Real estate professionals handling lease agreements, property disclosures, and buyer/seller documentation.
- Healthcare administrators managing patient consent forms and authorization documents.
- Legal professionals sending engagement letters and client authorization forms for e-signature.
Tips for a Professional-Looking Signature
- When drawing, use a touchscreen device with a stylus for the smoothest, most natural result.
- For typed signatures, "Great Vibes" and "Dancing Script" fonts most closely resemble real handwriting.
- Use a PNG image with a transparent background for the cleanest appearance on colored documents.
- Resize and position your signature carefully — it should align with the designated signature line on the form.
- Sign in blue or black ink color for the most professional and legally conventional appearance.
Is an Electronic Signature Legally Binding?
In most countries and for most document types, yes. The United States Electronic Signatures in Global and National Commerce Act (ESIGN Act, 2000) and the Uniform Electronic Transactions Act (UETA) establish that electronic signatures carry the same legal weight as handwritten signatures for the majority of agreements. The European Union's eIDAS regulation similarly validates e-signatures across all member states.
However, certain document types typically require more formal processes — such as wills, trusts, and some real estate transactions in specific jurisdictions. When in doubt, consult a legal professional to confirm the requirements for your specific document type and location.
Frequently Asked Questions
Yes, completely free with no hidden costs. There are no subscription plans, no per-document fees, and no watermarks added to your signed PDF. You can sign as many documents as you need without any charges or account registration.
Absolutely. This tool runs entirely inside your web browser using JavaScript. Your PDF file is never uploaded to any server, never stored anywhere online, and never seen by anyone other than you. All PDF rendering and signature embedding happens locally on your device's memory.
The tool supports standard PDF files (.pdf). This includes PDFs created by Microsoft Word, Google Docs, Adobe Acrobat, scanned document PDFs, and most other common sources. Very heavily encrypted PDFs with editing restrictions may not be processable — in that case, you may need to remove the password protection first.
Yes. The tool supports multi-page PDFs. Use the page navigation arrows to move between pages and place your signature on any page or multiple pages as needed. Each signature placement is tracked and embedded into the correct page of the final PDF output.
For most commercial contracts, agreements, and business documents, yes. Electronic signatures are legally recognized in the USA (under the ESIGN Act), across the EU (under eIDAS), and in many other countries. However, certain document types such as wills, testaments, and some notarized documents may have additional requirements. We recommend consulting a legal professional for sensitive legal documents.
Yes. The tool is fully responsive and works on iPhone, iPad, and Android devices using any modern mobile browser. The draw mode is especially well-suited for touchscreens — you can sign using your finger or stylus for a natural, handwritten signature appearance.
Yes. After placing your first signature, use the "Add Another" button to place additional signatures on the same page or other pages. This is useful for documents that require initials on each page or multiple signature fields.
It depends on your needs. Drawing produces the most authentic, personalized signature and is best for high-trust professional documents. Typing is the fastest option and produces a clean, consistent result. Uploading is ideal if you already have a digital version of your official signature from previous scans or documents.
Yes. The signature is embedded as a high-quality image directly into the PDF at the position you choose. The final document is indistinguishable from a PDF signed with professional software like Adobe Acrobat or DocuSign in terms of visual appearance.
An internet connection is needed to load the page initially. Once fully loaded, the signing and PDF generation process works entirely offline. The PDF processing library runs locally in your browser and does not make any network requests during the signing workflow.
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