Sign PDF on iPhone

Sign PDF on iPhone.

Need to sign a document on your iOS device? Discover how to sign using Apple's built-in Markup tools or securely inside Safari.

Sign PDF on iOSConvert PDF →

No account needed · zero uploads, verifiable in DevTools

—Sign directly in Safari or files app
—No App Store downloads required
—Uses natural finger or stylus drawings
—100% private local processing
—Works offline without internet
privapdf.net/convert● SecurePDFcontract.pdf2.4 MBWASMYour browserlocalDOCXcontract.docx1.9 MBConverted in 1.8 s0 bytes sent to any server↓SaveNO SERVER

How to Sign a PDF on iOS (iPhone & iPad)

Signing a PDF on your iPhone is extremely convenient and doesn't require printing or paid apps. Here are the two best ways to sign a document on iOS.

Method 1: Using the Files App (Built-in Markup)

Apple includes a powerful markup tool inside the Files app:

  1. Open the Files app and select your PDF.
  2. Tap the Markup icon (the pen tip) in the top-right corner.
  3. Tap the "+" button and select "Signature".
  4. Draw your signature with your finger or Apple Pencil, then place it on the page.

Method 2: Using PrivaPDF in Safari (Universal & Private)

If you are already browsing or want to sign without saving to the Files app first:

  1. Open Safari and go to the PrivaPDF Sign Tool.
  2. Select your PDF.
  3. Draw your signature on the screen and tap to place it.
  4. Download the signed PDF directly to your downloads folder.

Don't trust us.
Verify it yourself.

Open DevTools → Network while converting. You'll see zero outbound requests. Every byte stays inside your browser tab.

—Works offline — no internet connection required
—Nothing is uploaded — ever
—Designed for sensitive documents
ZERO OUTBOUND CALLS
ElementsConsoleNetworkSources
FilterAll · XHR · JS · Wasm
NameStatusTypeSize
converter.worker.js200script48 kB
pdf.worker.wasm200wasm312 kB
✓ No requests to external servers
Powered byWebAssembly·Web Workers·pdf-lib·mammoth.js·Service WorkerAll open source · auditable in DevTools

Common questions

How do I sign a PDF on iPhone without installing apps?

You can use the built-in Files app with Markup, or open Safari and use PrivaPDF to draw your signature locally.

Is my signature safe on iOS?

Yes. By using built-in iOS tools or PrivaPDF, your signature is embedded locally inside the browser tab or device files, never sent to external servers.

Is my file uploaded to a server?

No. All processing happens entirely in your browser using WebAssembly. Your file never leaves your device.

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