Sign PDF Online Free | Add Electronic Signature Instantly

Sign PDF documents online for free using our fast, secure electronic signature tool. Create your signature by typing your name in a handwriting font, drawing it with your mouse or finger, or uploading a scanned image of your signature. Drag and drop it precisely onto the signature line, resize it to fit, and download your signed PDF in seconds. No Adobe Acrobat, no software installation, no account required — just upload, sign, and share.

Free • No signup • TLS encrypted

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Support for PDF, Word, Excel, PowerPoint, and Images. Secure processing up to 100MB.

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What is an Online PDF Signature Tool?

An online PDF signature tool lets you add an electronic signature to a PDF directly in your web browser — no Adobe Acrobat, no software installation, and no account required. Upload your PDF, create your signature by typing, drawing, or uploading an image, place it on the page, and download the signed document in seconds.

At PDFFixNow, you can sign PDF online for free. Works on Windows, Mac, iPhone, and Android.

Why sign PDFs digitally: Printing, signing by hand, scanning, and re-sending is slow, wasteful, and inconvenient. Electronic signing removes every step of that process — you sign the document directly on your screen and send the signed file in seconds. This is faster, paperless, and fully accepted in most legal and business contexts worldwide.

Mobile signing made easy: If you receive a contract on your phone and need to sign it immediately, open PDFFixNow in your mobile browser, upload the PDF, draw your signature with your finger or select a typed version, drag it to the correct line, and download the signed PDF — all without leaving your phone or installing any app.

Desktop support: Mac users can sign PDFs with full control over signature placement instead of relying on the limited Preview app. Windows users can sign documents directly in Chrome or Edge without downloading Adobe Acrobat or any third-party software. The drag-and-drop interface works seamlessly with your file explorer on every major operating system.

How to Sign a PDF Online in 3 Simple Steps

Upload your PDF

Drag and drop your PDF file into the upload box or click to browse your device. The tool loads a preview of your document so you can see every page before signing.

Create and place your signature

Click "Create Signature" and choose your preferred method — type your name in a handwriting font, draw your signature freehand with your mouse or finger, or upload an image of your existing signature. Drag the signature to the correct location on the page and resize it to fit.

Download your signed PDF

Click "Sign PDF" to apply your signature permanently to the document. Your signed PDF is ready in seconds — download it directly to your device, watermark-free and ready to share or submit.

When Should You Sign a PDF Online?

Signing PDF documents electronically is now the standard across business, legal, HR, and personal workflows. Here are the most common situations where our online PDF signer saves time.

Sign a job offer letter, employment contract, or NDA sent to you by HR without printing or scanning.
Sign a rental agreement or lease contract remotely when you cannot be present in person.
Add your signature to a business proposal, service agreement, or client contract before sending.
Sign government application forms, tax documents, or official declarations that require a signature.
Add initials and a date to every page of a multi-page legal agreement before submission.
Sign a consent form, medical release form, or waiver sent by a healthcare provider or institution.
Sign a purchase order, invoice authorization, or approval document in a business approval workflow.
Add your signature to a freelance or contractor agreement before starting a new project.

Why Use PDFFixNow to Sign PDF Online?

Three Ways to Create Your Signature

Choose the method that works best for you. Type your name and select from multiple handwriting-style fonts for a clean typed signature. Draw your real signature freehand with your mouse, trackpad, or finger on a touchscreen. Or upload a scanned image or photo of your physical signature for a pixel-perfect match.

Drag, Resize & Position Anywhere

Place your signature exactly where it needs to go. Drag it to the correct signature line, pinch-to-zoom for precision on mobile, and resize the signature box to fit the available space perfectly. You can add multiple signatures to different pages of the same document in a single session.

Add Initials & Date Fields

Beyond a full signature, you can add your initials and a date stamp to your document. This is essential for multi-page contracts where each page requires individual initials, ensuring every section of the agreement is properly acknowledged.

Private & Secure Processing

We prioritize your absolute privacy above all else. Your documents are uploaded through a highly secure, heavily encrypted TLS connection to prevent interception. All original uploads and signed PDFs are completely purged from our servers within a few hours of processing. We never read, store, or share your documents or signature data.

No Installation Needed

Sign PDF documents directly from your favorite web browser — no software to download, no browser extensions, no account registration. Because it runs entirely in the cloud, the tool works flawlessly on Windows, Mac, Linux, iPhone, iPad, and Android devices without installing anything.

Completely Free — No Watermarks

Sign as many PDF documents as you need, completely free of charge. We do not add watermarks to your signed documents, do not restrict basic signing behind a paywall, and do not require an account for standard use. Your signed PDF is clean and professional — ready to submit or share immediately.

Tips for Signing PDF Documents Effectively

For contracts and agreements where a natural-looking signature matters, use the draw option and sign with your mouse or finger exactly as you would on paper. This produces the most authentic and recognizable result and is indistinguishable from a scanned handwritten signature.

If you have a scanned image of your signature on a white background, convert it to a transparent PNG before uploading. This ensures the signature blends naturally into the document without a visible white box around it, giving the most professional appearance.

Use your browser zoom or pinch-to-zoom on mobile to magnify the page before placing your signature. This lets you position it accurately on the signature line, especially in documents with very small or tightly formatted signature areas.

For most contracts and agreements, the date of signing is as important as the signature itself. Use the text tool to add the current date directly next to your signature on the document. This creates a complete, timestamp-verified signing record.

After signing, use our Flatten PDF tool to merge your signature permanently into the page content. A flattened PDF prevents recipients from moving or deleting the signature overlay in a PDF editor, making the signed document more tamper-resistant before submission.

You can sign a PDF on iPhone or Android directly from your mobile browser. Open PDFFixNow, upload the document, draw your signature with your finger, drag it to position, and download the signed PDF — all without leaving your phone or installing any app.

Frequently Asked Questions About Signing PDFs Online

Upload your PDF to our sign tool. Click "Create Signature" and choose how to make your signature — type your name, draw it freehand, or upload an image. Once your signature is ready, drag it onto the correct signature line on the page. Resize and reposition it as needed. Click "Sign PDF" to apply and download your signed document instantly.

Yes. Electronic signatures are legally valid and enforceable in most countries for the vast majority of personal and business agreements. In the United States, they are recognized under the E-SIGN Act and UETA. In the EU, they are covered under eIDAS regulation. For most contracts, agreements, consent forms, and business documents, an electronic signature carries the same legal weight as a handwritten signature.

An electronic signature is a visual representation of your signature placed on a document — like drawing or typing your name. A digital signature is a cryptographic security mechanism that verifies the identity of the signer and detects if the document was altered after signing. Our tool creates electronic signatures, which are the standard method used for most contracts and agreements.

Yes. We use TLS encryption for all file transfers to protect your document from interception. Your uploaded PDF and the signed output file are automatically and permanently deleted from our servers after 2 hours. We never read, store permanently, or share your documents or signature with any third party.

Yes. Our PDF signing tool is fully mobile-friendly. Open PDFFixNow in Safari (iPhone/iPad) or Chrome (Android), upload your PDF, draw your signature with your finger or type it, drag it to the signature line, and download the signed file — all from your phone or tablet without installing any app.

Yes. You can add signatures, initials, and date fields to multiple pages of the same document in a single session. After placing your signature on one page, navigate to the next page and repeat the process. All signatures are applied when you click Sign PDF at the end.

Yes. Our tool embeds your signature directly into the PDF page content. Unlike viewer-only overlays, the signature is permanently written into the document and will appear correctly in every PDF reader, browser, and device that opens the file. For maximum security, use our Flatten PDF tool after signing.

Password-protected PDFs must be unlocked before signing. Use our Unlock PDF tool to remove the password first, then upload the unlocked file to the sign PDF tool to add your signature. After signing, you can re-apply password protection using our Protect PDF tool if needed.

Yes. Sign your name on white paper, take a clear photo, and upload the image using the "Upload Signature Image" option. For the cleanest result, crop the image tightly around your signature and convert it to a PNG with a transparent background before uploading — this removes the white box and makes the signature blend naturally into the document.

No. You can sign as many PDF documents as you need, completely free. There are no daily limits, no account required, and no watermarks added to your signed documents. Upload, sign, and download without any restrictions.

Sign PDF Online Free | Add Electronic Signature Instantly

What is an Online PDF Signature Tool?

How to Sign a PDF Online in 3 Simple Steps

When Should You Sign a PDF Online?

Why Use PDFFixNow to Sign PDF Online?

Tips for Signing PDF Documents Effectively

Frequently Asked Questions About Signing PDFs Online

How do I sign a PDF online?

Is an electronic signature legally valid?

What is the difference between an electronic signature and a digital signature?

Is it safe to sign documents online?

Can I sign a PDF on my iPhone or Android?

Can I add my signature to multiple pages?

Will the signature be permanently saved in the PDF?

Can I sign a password-protected PDF?

Can I upload an image of my handwritten signature?

Is there a limit to how many PDFs I can sign?