Sign PDF requires sign-in. You can explore the tool below.
Add a signature to your PDF — draw it freehand or upload an image, then place it on any page.
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Sign PDF files online with PDFPilot4U — add your handwritten signature, typed signature, or digital signature to any PDF in seconds. The sign PDF tool supports drawing with mouse or finger, typing your name in signature fonts, or uploading a scanned signature image. Position the signature anywhere on the page, resize it to fit, and add date stamps, initials, or text annotations alongside. Perfect for signing contracts, NDAs, employment agreements, or any document that needs a quick e-signature without printing. The sign PDF process is legally compliant under eIDAS and ESIGN Act standards, with full audit trail and timestamp metadata embedded. Documents are encrypted end-to-end with TLS 1.3, processed privately, and never used to train AI. Sign unlimited PDFs on Pro plans — free tier gets 3 signatures per day with no watermark on output.
Drop the PDF that needs signing. The sign PDF tool supports up to 500 MB on Business plans.
Draw with mouse or finger, type your name in signature fonts, or upload a scanned signature. Add date, initials, or text fields too.
Drag the signature to the right spot on any page. Click Sign — the signed PDF downloads with embedded audit metadata.
HR teams send offer letters as PDFs for new hires to sign and return in minutes — no printing needed.
Sales teams sign client-sent NDAs without scanning and re-uploading — direct browser-based signing.
Finance leaders e-sign vendor invoices for payment authorization, with timestamp audit trail.
How Sign PDF on PDFPilot4U compares to the most common alternatives.
| Feature | PDFPilot4U | iLovePDF | Smallpdf |
|---|---|---|---|
| Legally binding (eIDAS/ESIGN) | Yes — full audit trail | Premium only | Premium only |
| Multi-party signing | Pro plan | Premium | Premium |
| Draw + type + upload signature | All 3 methods | Draw + type | Draw + type |
| Free daily limit | 30 operations/day (guest), unlimited on Business | ~3 tasks/hour for free, premium starts $7/mo | 2 documents/day free, premium $9/mo |
| Max file size (free) | 5 MB free, 100 MB Pro, 500 MB Business | ~10 MB free | ~5 MB free |
| AI features included | 12 AI tools (Ask PDF, Summarize, Translate, etc.) | Limited — AI add-on only on premium | AI features locked behind premium tier |
| Privacy / data handling | TLS 1.3 + AES-256, auto-delete in 24h, no model training | Files deleted in 2h, standard SSL | Files deleted in 1h, ISO 27001 |
| No watermark on output | Always — free + paid | Free tier may add watermark | Free tier may add watermark |
Yes. PDFPilot4U e-signatures comply with eIDAS (EU) and ESIGN Act (US) standards, with embedded audit trail and timestamp metadata for legal enforceability.
Yes. The sign PDF tool has a draw canvas — use mouse on desktop or touch finger/stylus on mobile and tablet for a true handwritten signature.
Yes. Upload a transparent PNG of your signature. The sign PDF tool places it on the page with adjustable size and position.
Yes. The sign PDF tool supports text fields, date stamps, checkboxes, and initials alongside the signature on the same PDF.
After signing, the PDF includes a cryptographic hash and timestamp. Any modification invalidates the signature, flagging tampering in PDF readers.
Yes on Pro plans. Send a signing link to additional signers — each signature is independently audited and embedded.
Free accounts get 3 signatures per day. Pro plans unlock unlimited signing, multi-party signing, and signature templates.
Signed PDFs are auto-deleted within 24 hours on free accounts. Pro and Business users can keep signed documents permanently in My Files.
