The paid-signature tax and why you probably don't need to pay it
DocuSign, Adobe Acrobat Sign, HelloSign, PandaDoc — they all want $10–25/month to let you sign PDFs. For companies sending thousands of contracts through a tracked workflow with audit trails, that's worth it. For an individual signing a one-off lease, a school permission slip, or a freelancer contract, it's not.
What you actually need to sign a PDF: (1) a way to put your signature on the page, (2) a way to save the result as a valid PDF. Both can be done in your browser, for free, in about 30 seconds. No upload, no account, no monthly fee.
The legal validity of an electronic signature in the US (ESIGN Act), EU (eIDAS), UK (Electronic Communications Act), and most other jurisdictions doesn't depend on which vendor you use. A signature is a signature. What matters is intent and identifiability — and a drawn or typed signature on a PDF satisfies both.
Three ways to sign a PDF (all free, all in-browser)
Pick whichever matches what you already have. None of these methods require uploading the document to a server.
- 1Draw it: open the PDF in a browser-based annotator, choose the pen tool, draw your signature with your mouse, trackpad, or touchscreen. Best for tablets/phones with a stylus.
- 2Type it: pick a script-style font (Brush Script, Edwardian, etc.), type your name, place it on the signature line. Legally valid in most jurisdictions, fastest option, but looks less personal.
- 3Photo upload: sign your name on a blank piece of white paper with a dark pen, photograph it with your phone, upload the photo. The tool extracts the signature (removes the background) and places it on the PDF. Best when you want your real signature without a stylus.
Step-by-step: Sign a PDF with PrivacyScanPDF
PrivacyScanPDF doesn't have a dedicated 'sign' tool yet — but the existing annotation tools cover all three methods above. Here's the workflow most users follow.
- 1Open the PDF in the Redact PDF tool (which also supports add-annotation mode).
- 2For draw: pick the pen tool, set color to dark blue or black, draw your signature on the signature line.
- 3For type: use the text-box tool, type your name, set font to a script style, size to ~36pt.
- 4For photo: upload your signature photo as an image, position and resize it over the signature line.
- 5Click 'Save PDF'. The signed file downloads immediately — no email, no signup, no upload to a server.
Is an electronic signature legally valid?
In the United States, the ESIGN Act (2000) gives electronic signatures the same legal weight as handwritten ones for almost all documents. Exceptions: wills, divorce papers, court orders, eviction notices, and a few other categories that vary by state. For contracts, leases, NDAs, tax forms, and pretty much everything you'd actually sign in everyday life, an e-signature is fully binding.
In the EU, eIDAS (2014) does the same thing across all member states. The UK retained eIDAS after Brexit. Canada (PIPEDA), Australia (Electronic Transactions Act), and most of Asia have equivalent laws.
What can void an e-signature: (1) if the signer can plausibly claim they didn't actually sign it (no audit trail), (2) if the document was altered after signing (no integrity check), or (3) if the signature was forged. For high-stakes contracts, paid platforms like DocuSign add audit trails and tamper-evident seals that address #1 and #2. For a lease or freelance gig, a signed PDF is fine.
When you DO need a paid e-signature platform
Pay for DocuSign, Acrobat Sign, or HelloSign if any of these apply: (1) you need a court-admissible audit trail showing who signed when, from what IP, with what browser fingerprint; (2) you're sending the same document to multiple signers in a specific order; (3) you need templated fields that auto-route to different signers; (4) you're a regulated industry (finance, healthcare) where the regulator requires a specific e-signature standard.
For everyone else — individuals, freelancers, small businesses, students, parents signing school forms — the free browser-based approach works. You're not evading anything; you're just not paying for features you don't need.
How to make a transparent signature image (one-time setup)
If you go the photo-upload route, you'll want a transparent PNG of your signature so it doesn't sit in a white rectangle on the PDF. Once you have it, you can reuse it forever.
Sign on plain white paper with a dark pen (black ballpoint or felt-tip — not pencil, not blue ink). Photograph in good natural light, no flash, camera parallel to the paper. Crop tightly. Then either use a free background-removal tool (remove.bg, or the built-in magic-wand in any image editor) to make the white transparent, or — faster — use PrivacyScanPDF's image-to-PDF tool, which handles the thresholding automatically.