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Custom layout templates · Digital cryptographic signatures · Unlimited page sizes · Priority processing
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Explore Our PDF Guides
Draw, Type, or Upload
Draw with touch/mouse, type your name using beautiful cursive fonts, or scan your physical signature.
Multi-page Annotations
Easily navigate through pages and place your signature, initials, date stamps, or initials.
100% Secure & Private
Your documents never touch a server. All canvas drawing and merging run locally on your device.
Sign PDF Online Free
Secure Electronic Signatures
Create, place, and embed electronic signatures on your PDF agreements, invoices, and contracts. Complete the entire signature flow safely inside your browser.
What is Online PDF Signing?
Online PDF signing lets you add visual electronic signatures directly onto your PDF pages. By avoiding the printing, signing with a pen, and scanning cycle, you save significant time. Our tool provides full drawing canvases, typing controls, and signature scaling options to fit your signature neatly into contract blocks.
SmartPDFs Pro processes your documents 100% locally in your browser's memory. No uploads are sent to server folders, which completely eliminates data intercept risks and ensures instant rendering.
How to Sign PDF Documents in 3 Simple Steps
Upload PDF
Select your PDF document or image file. The file is opened instantly in your browser workspace.
Add Custom Signature
Draw your signature, type it, or upload a PNG image, then drag it to your target page position.
Download Signed File
Place it, scale it, and download your updated PDF immediately without watermark overlays.
Key Benefits & Features
100% Private local edit
Because we execute the canvas composition locally on your computer, your signatures and sensitive contracts are never exposed to external cloud servers.
Multiple signature formats
Freely switch between typing cursive script names, drawing custom shapes, or uploading scanned signature files. Set exact colors and size constraints.
- Supports adding text labels like signing dates, names, titles, and locations.
- Smooth signature layout placement with quick mouse dragging or touch drag inputs.
- Complies with PDF specification tags, compatible with global PDF reader catalogs.
- Completely free, no watermarks, and no sign-up registration is required.
Frequently Asked Questions
Is my electronic signature legally binding?
Yes. Electronic signatures are legally recognized in most jurisdictions (including the US ESIGN Act and European Union eIDAS regulations) for most business and personal agreements.
Are my signatures and documents secure?
Absolutely. Our tool operates completely in your web browser. Neither your PDF document nor the signature you draw or upload is ever transmitted to a server. Everything remains local on your device.
Can I sign multiple pages in the same PDF?
Yes. The editor allows you to navigate through pages and place multiple instances of your signature, date, initials, or custom text boxes on any page.
Can I type my signature instead of drawing it?
Yes. You can draw your signature, type it using elegant cursive fonts, or upload a scanned image of your physical signature.
What is an eSign PDF tool?
An eSign PDF tool allows users to electronically sign PDF documents online using drawn signatures, typed signatures, or uploaded signature images.
Can I sign PDF documents online for free?
Yes, SmartPDFPro provides a free online PDF signing tool that works directly in your browser without software installation.
How do I electronically sign a PDF online?
Upload your PDF document, create or upload your signature, place it on the desired page, and download the signed PDF instantly.
Can I draw my signature digitally?
Yes, SmartPDFPro allows users to draw signatures using a mouse, touchscreen, stylus, or trackpad.
Can I upload an image of my handwritten signature?
Yes, users can upload PNG, JPG, or transparent signature images and place them anywhere inside the PDF document.
Can I type a signature instead of drawing one?
Yes, SmartPDFPro supports typed electronic signatures using elegant signature-style fonts.
Can I add initials, dates, or text fields to PDFs?
Yes, SmartPDFPro allows users to add initials, signing dates, names, and custom text boxes inside PDF documents.
Can I sign multiple pages in the same PDF?
Yes, users can place signatures, initials, and text fields across multiple PDF pages in a single session.
Is SmartPDFPro eSign tool secure?
Yes, SmartPDFPro processes PDF signing securely in your browser and does not permanently store uploaded documents or signatures.
Are signed PDF documents uploaded to servers?
No, many SmartPDFPro editing operations run locally in your browser using modern browser technologies for improved privacy and security.
Can I sign confidential business contracts online?
Yes, SmartPDFPro is suitable for signing contracts, agreements, invoices, NDAs, legal documents, and business forms securely.
Can businesses use SmartPDFPro eSign PDF tool?
Yes, businesses, freelancers, legal professionals, accountants, students, and office teams use SmartPDFPro for digital document signing workflows.
Does electronic signing affect PDF quality?
No, SmartPDFPro preserves the original PDF quality, text clarity, vector graphics, images, and formatting after signing.
Can I sign password-protected PDF documents?
Yes, but encrypted PDFs may first need to be unlocked using the Unlock PDF tool before signing.
Can I sign PDF files on mobile devices?
Yes, the eSign PDF tool works on Android, iPhone, tablets, Windows, and Mac browsers.
Do I need Adobe Acrobat to sign PDFs?
No, SmartPDFPro works entirely online in your browser without requiring Adobe Acrobat or desktop software.
Can I use eSign PDF tool without registration?
Yes, SmartPDFPro allows users to sign PDF documents instantly without account creation or login.
Can I sign PDFs offline?
Many SmartPDFPro tools work directly in the browser after loading, reducing dependency on continuous internet connectivity.
Does SmartPDFPro add watermarks to signed PDFs?
No, SmartPDFPro does not add watermarks or branding to electronically signed PDF documents.
Can I place signatures anywhere inside the PDF?
Yes, SmartPDFPro provides drag-and-drop signature placement for flexible positioning anywhere on PDF pages.
Can I electronically sign invoices, forms, and agreements?
Yes, SmartPDFPro supports signing invoices, contracts, agreements, forms, reports, applications, and other PDF documents.
Are electronic signatures legally accepted?
Electronic signatures are legally recognized in many countries and business workflows, including agreements covered by eSign and eIDAS regulations.
What types of signatures does SmartPDFPro support?
SmartPDFPro supports drawn signatures, typed signatures, uploaded image signatures, initials, and custom text annotations.
Why use SmartPDFPro to sign PDF files?
SmartPDFPro offers fast browser-based PDF signing, secure processing, mobile compatibility, drag-and-drop placement, and watermark-free downloads in one modern platform.
What makes SmartPDFPro different from other eSign tools?
SmartPDFPro combines privacy-focused browser processing, easy signature creation, secure PDF editing, and modern document workflows in a simple user-friendly interface.
Does SmartPDFPro support browser-based PDF editing?
Yes, SmartPDFPro provides browser-based PDF tools including eSign, merge, split, compress, organize, convert, protect, and ecommerce warehouse automation workflows.