Sign PDF Online Free
Draw, type, or upload electronic signatures and add date stamps. 100% private in your browser with zero server uploads.
Drop PDF files here
You can select multiple files at once. PDF files up to 200 MB are supported.
How to Sign a PDF Document Online
Sign legal contracts, lease agreements, tax forms, and NDAs in seconds without printing or scanning.
Upload PDF File
Drag & drop your document into the box above or click to browse. Files load instantly into your local browser memory.
Create Your Signature
Draw your signature with a mouse or stylus, type your name in smooth cursive fonts, or upload a scanned signature image.
Position & Add Date Stamp
Drag your signature box to the exact signing line. Resize as needed and insert a one-click formatted date stamp.
Download Signed PDF
Export your finalized PDF immediately with zero watermarks and zero compression degradation.
Comprehensive Online e-Signing Features
Designed to solve real-world document workflow needs with speed, versatility, and strict privacy.
Draw, Type, or Upload Signature
Create an electronic signature whichever way you prefer: sketch naturally with touch/mouse, type your name in stylized handwriting scripts, or upload a photo of your signature.
Transparent PNG Signature Downloader
Need a reusable signature image for email footers, Word documents, or Google Docs? Generate and download high-resolution PNG signatures with transparent backgrounds.
Interactive Date Stamping
Quickly stamp today’s date in standard format onto your document alongside your signature without needing a separate PDF editor or text tool.
100% Private Client-Side Signing
Zero cloud uploads. All rendering, signature placing, and PDF flattening occur strictly within your browser. Safe for NDAs, medical records, and confidential contracts.
No Sign-Up or Registration Required
Forget mandatory account creation, credit card prompts, and daily usage paywalls. Start signing documents immediately with zero friction.
Works Across All Devices & Touchscreens
Optimized for mobile touchscreens, iPad stylus inputs, Mac, Windows, and Linux. Sign contracts anywhere on the go from your browser.
Frequently Asked Questions
Answers to common questions about electronic signatures, legality, and browser security.
How do I sign a PDF online for free?▾
Select or drop your PDF document into the PDF-X upload area. Next, choose whether to draw your signature using a mouse, trackpad, or finger, type your name using elegant cursive fonts, or upload an image of your signature. Drag and position the signature onto the document, adjust its size, add an optional date stamp, and click 'Download Signed PDF'. The entire process is 100% free and requires no account or credit card.
Can I create and download a signature image with a transparent background?▾
Yes! PDF-X includes a standalone signature generator. Click 'Create & Download Signature PNG' on this page, choose between Draw, Type, or Upload, select 'Transparent Background', and download your high-resolution PNG. You can insert your transparent signature directly into Google Docs, Microsoft Word, email signatures, or scanned forms.
Are electronic signatures legally binding?▾
Yes. Electronic signatures (e-signatures) created with PDF-X are recognized as legally valid under the United States Electronic Signatures in Global and National Commerce Act (ESIGN Act), the Uniform Electronic Transactions Act (UETA), and European eIDAS regulations for standard electronic agreements, employment contracts, NDAs, and vendor proposals.
Are my confidential documents uploaded to any remote servers?▾
No, never. Unlike conventional cloud PDF converters, PDF-X processes everything 100% locally inside your web browser using HTML5 Canvas and WebAssembly. Your files, signatures, and private data never traverse the internet or touch any external server, satisfying strict NDA, HIPAA, and GDPR data sovereignty standards.
Can I add a date stamp alongside my signature?▾
Yes. With a single click on 'Add Date Stamp', PDF-X places an auto-formatted date box onto your document. You can drag the date stamp to sit beside or underneath your signature and adjust its position precisely.
Can I sign a PDF on my phone or tablet?▾
Yes. PDF-X is fully mobile-optimized for iPhone, iPad, Android smartphones, and tablets. You can use your touchscreen or Apple Pencil/stylus to draw a smooth, natural handwritten signature directly in your mobile browser without installing third-party apps.
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