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Sign PDF Online Free — eSignature, No Signup, No Watermark

PDFWix lets you add a legally valid electronic signature to any PDF in seconds — type in a script font, draw with mouse or finger, or upload a PNG of your handwritten signature. Processed entirely in your browser. Free, no signup, no watermark.

Sign PDF Online Free — eSignature, No Signup, No Watermark

PDFWix lets you add a legally valid electronic signature to any PDF in seconds — type in a script font, draw with mouse or finger, or upload a PNG of your handwritten signature. Processed entirely in your browser. Free, no signup, no watermark.

Why use PDFWix to sign PDFs

Common uses for signing PDFs

How to sign a PDF

  1. Upload your PDF — Drag it into the upload area or click to select. Any PDF is supported including forms, contracts, agreements, and letters.
  2. Create your signature — Draw it with your mouse or finger, type your name in a handwriting-style font, or upload an image of your existing handwritten signature. Adjust size and colour to match your preference.
  3. Place the signature on the page — Drag it to the correct position and resize as needed. Add initials, date, or text fields to other parts of the document. Click Download to save your signed PDF.

Related tools

Three Ways to Add a Signature to a PDF

PDFWix gives you three methods to create and place an electronic signature on any PDF. Draw your signature — use your mouse on desktop or your finger on a touchscreen to draw your signature directly in the tool. This produces the most natural-looking result and works well for everyday documents like delivery confirmations, internal approvals, and personal forms. Type your signature — type your name and choose a handwriting-style font. Clean and consistent across every document you sign. Suitable for professional correspondence where a uniform signature is preferred. Upload a signature image — photograph or scan your handwritten signature on white paper, then upload the image. PDFWix removes the white background so only the signature is visible when placed on the document. This gives you…

Electronic Signature vs Digital Signature — What Is the Difference?

These two terms are frequently used interchangeably but they mean different things. An electronic signature (eSignature) is any electronic method that indicates a person's intent to sign a document — a drawn signature image, a typed name, or a click on 'I agree'. Electronic signatures are legally valid in most jurisdictions under laws including the US ESIGN Act and the EU eIDAS Regulation for everyday business documents. A digital signature is a specific type of electronic signature that uses cryptographic certificates to prove the signer's identity and detect whether the document was altered after signing. Digital signatures include a certificate from a trusted authority and create a tamper-evident seal on the…

Sign PDF vs Fill PDF Form — Which Do You Need?

If your PDF has interactive form fields — text boxes, checkboxes, dropdown menus — use the fill PDF form tool to complete them, then return to sign PDF to add your signature. If your PDF is a flat document with no interactive fields — a standard letter, agreement, or contract printed to PDF — use sign PDF to place your signature directly on the page wherever it is needed. Many documents require both: filling in fields and then signing. PDFWix has both tools at pdfwix.com/fill-pdf-form and pdfwix.com/sign-pdf.

Is an electronic signature legally valid?

Yes, for the vast majority of everyday contracts. Here is the framework by jurisdiction: **United States — ESIGN Act (2000):** Electronic signatures are legally equivalent to handwritten signatures for most commercial contracts. A typed or drawn signature on a PDF qualifies as a valid electronic signature. **European Union — eIDAS Regulation:** PDFWix signatures qualify as 'Simple Electronic Signatures' (SES) under eIDAS, which are legally valid for everyday agreements. For regulated transactions (real estate conveyancing, court filings) a 'Qualified Electronic Signature' (QES) with a certificate is required. **United Kingdom — Electronic Communications Act 2000 (ECA):** Electronic signatures are admissible in…

How to sign a PDF on mobile

PDFWix Sign PDF works on any mobile browser — no app install required. **iPhone / iPad:** 1. Open Safari and go to pdfwix.com/sign-pdf 2. Tap 'Select PDF file' — choose from Files app or Photos 3. Tap 'Draw' and sign with your finger on the canvas 4. Drag the signature to the correct position on the contract 5. Tap 'Download signed PDF' — the file saves to your Files app **Android:** 1. Open Chrome and go to pdfwix.com/sign-pdf 2. Tap 'Select PDF file' — choose from Downloads or Drive 3. Tap 'Draw' and sign with your finger 4. Position and resize the signature 5. Tap 'Download signed PDF' — saves to your Downloads folder

Frequently asked questions

Is it free to sign a PDF online?

Yes. PDFWix's sign PDF tool is completely free with no daily task limits and no watermarks on the signed output. No account or signup required.

Is an electronic signature legally valid?

Electronic signatures are legally valid for most everyday documents in most jurisdictions under the US ESIGN Act, EU eIDAS regulation, and equivalent laws worldwide. For specific legal requirements in your jurisdiction or industry, consult a legal professional.

Can I sign a PDF on iPhone or Android?

Yes. Open pdfwix.com/sign-pdf in Safari on iPhone or Chrome on Android. Draw your signature with your finger directly on the touchscreen. No app install needed.

Can I sign a PDF without Adobe Acrobat?

Yes. PDFWix signs PDFs entirely in your browser with no software required. No Adobe account, no Acrobat installation, no subscription needed.

Are my documents private when signing online?

Yes. PDFWix's sign PDF tool runs entirely in your browser — your document never leaves your device. No upload to any server at any point.

Can I request signatures from others?

Yes. PDFWix allows you to add signature fields to a PDF and send it to others for signing. Recipients can sign without creating an account.

How is PDFWix different from DocuSign for signing PDFs?

PDFWix is a browser-based tool for signing PDFs you already have — it is free, requires no signup, and processes files in your browser. DocuSign is a workflow platform for sending documents to others for signature, tracking responses, and maintaining a certified audit trail. Use PDFWix when you need to sign something quickly and privately; use DocuSign when you need to collect signatures from others or need a legally certified audit trail.

Does my signature stay on the PDF forever?

Yes. PDFWix flattens your signature into the PDF on download — it is baked into the page as a permanent image element. It will appear identically in Adobe Acrobat, Apple Preview, Chrome, mobile readers, and on print. The signature cannot be moved or removed without editing tools that would be visually apparent.

How do I sign a PDF without printing it?

Open PDFWix Sign PDF in any browser — no printing, scanning, or faxing required. Upload your PDF, create your signature (draw with mouse or finger, type in a script font, or upload a PNG of your handwritten signature), drag it onto the correct page, and download. The signed PDF opens in every standard reader and is accepted for most everyday contracts, agreements, and forms. Printing is only required when a physical wet signature is specifically requested — for example…

To fill interactive form fields before signing, use fill PDF form. To protect your signed PDF with a password after signing, use protect PDF. To add a CONFIDENTIAL or DRAFT watermark stamp across pages instead of a signature, use watermark PDF.