Sign PDFs free without Adobe Acrobat. Browser, Mac Preview, iPhone Markup, Android — every legal e-signature method that doesn't need a subscription.
Electronic signatures are legally binding in the US (ESIGN Act, 2000), the EU (eIDAS, 2014), the UK (Electronic Communications Act 2000), India (IT Act 2000) and most other jurisdictions. The law cares about intent and audit trail — not which software produced the signature image.
A signature drawn in PDFWix Sign PDF is the same legal class as a signature drawn in Acrobat Pro. The brand of the tool is irrelevant.
Open Sign PDF, drop the file, draw or type your signature, drag it onto the right page, save. The downloaded PDF is flattened — the signature is baked in and cannot be moved or edited by the recipient.
Works on every OS and device: Windows, Mac, Linux, iPhone, Android, Chromebook, iPad. The file is processed in your browser — no upload, no signup, no watermark.
Preview lets you save a signature once (drawn on trackpad or captured via webcam) and re-use it across all future PDFs. Open the PDF → markup toolbar → signature icon → pick yours → drop on page. Free, native, fast for repeat signers.
Open the PDF in Files or Mail, tap the markup pencil, tap +, choose Signature, draw with your finger or Apple Pencil, place it. Saves to your signature library automatically. Zero install.
Android has no first-party PDF signing flow that's as polished as iOS Markup. The reliable free path is opening Sign PDF in Chrome on your phone, drawing the signature with your finger, placing it and saving. Works without a Play Store install.
If you're signing 100+ contracts a month or you need a tamper-evident certificate-based digital signature with timestamping (qualified electronic signatures under eIDAS, for example), use DocuSign, Adobe Sign or a qualified trust service provider. For occasional contracts, NDAs, offers and admin paperwork, the free methods above are legally sufficient and audit-friendly.
Yes in almost every country — courts have repeatedly upheld typed and drawn e-signatures as binding when there's clear intent to sign and an audit trail (file metadata, email transmission).
Not from a flattened PDF. PDFWix flattens signatures into the page on save, so they can't be edited back out without leaving evidence.
No. Drawing on a trackpad or phone screen produces a perfectly valid signature. If you prefer your handwritten one, photograph it and upload as an image to the Sign PDF tool.