Method 1 — PDFWix in Safari (works on any phone)

Open Sign PDF in Safari, tap to upload your file from Files or iCloud Drive, then draw your signature with your finger or Apple Pencil. Tap Download to save the signed PDF back to Files.

Nothing leaves your phone — the entire signing flow runs in your browser. No app to install, no account.

Method 2 — Apple's built-in Markup

Open the PDF in Files or Mail, tap the Markup icon (pen tip), choose Signature, and either pick a saved signature or draw a new one. Position, resize, then save.

Markup is fast for personal documents but limits you to one signature field per session and lacks date/initial fields.

Method 3 — Combine: Markup for signature, PDFWix for everything else

If your contract needs a signature plus initials on every page, sign once with Markup, then open the resulting PDF in Sign PDF to add initials, dates and printed name fields in bulk.