How to Sign a PDF on iPhone Without Printing It

The fastest way to sign a PDF on an iPhone without printing it is the built-in Markup tool: open the PDF in the Files app, tap the Markup icon, add a signature, drag it onto the line, and tap Done. It takes about a minute and needs no extra app. If Markup isn't available or the PDF is a flat scan, you can also sign in Safari with a browser-based editor.

Method 1: Sign in the Files App With Markup

This is the method most people want, because everything is already on your phone. Exact icon positions shift a little between iOS versions, so treat the labels below as the thing to look for.

1. Save the PDF to your phone. From Safari or an email attachment, tap Share, then Save to Files.
2. Open the Files app and tap the PDF to preview it.
3. Tap the Markup icon (a pen tip in a circle). Some iOS versions show it at the top right, others show a pencil icon along the bottom.
4. Tap the plus (+) button, then choose Signature or Add Signature.
5. Draw your signature with your finger and tap Done. It is saved for next time.
6. Drag the signature onto the signature line. Drag the corner handles to resize it.
7. Tap Done in the top left. The signed PDF is saved over the version in Files, so duplicate the file first if you want to keep an unsigned copy.

The same plus menu has Add Text, which is how you type your printed name or the date next to the signature. For forms with many fields, filling them first is easier, and our guide to filling out a PDF on iPhone covers that part.

Method 2: Sign Straight From Mail

If the PDF arrived as an email attachment, you can skip saving it.

1. Open the email and tap the PDF attachment to preview it.
2. Tap the Markup icon in the preview toolbar.
3. Tap the plus (+) button, choose Signature, and place it on the line.
4. Tap Done, then reply to the email. The signed copy is attached to your reply.

This works best for a single signature on a simple document. If you need to sign several places, enter dates, or check boxes, the Files method gives you more room to work.

Method 3: Sign in Safari With a Browser Editor

Markup is not always the right tool. It struggles when the PDF is a flat scan with no form fields, when you need to place a signature precisely at a small line, or when you want the same workflow on your iPhone, laptop and a colleague's computer. A browser-based editor solves this with no install.

1. Open the PDF Editify sign tool in Safari.
2. Upload the PDF from Files, iCloud or your photo library.
3. Create a signature by drawing, typing or uploading an image. Place it where you need it and resize it.
4. Add the date or any other text. If the PDF has fillable fields, the fill tool handles them.
5. Download the signed PDF to Files and share it.

Our broader walkthrough on adding a signature to a PDF covers the desktop version of the same flow.

Making the Signature Look Right

• Use a larger drawing area. Rotate the phone to landscape when drawing. You get a wider canvas and smoother strokes.
• Zoom in before placing. Pinch-zoom on the signature line, then drag. A signature that sits on the line looks like a real one, and one floating above it can get a form rejected.
• Keep it proportional. A signature should be about the height of two lines of text. Oversized signatures cover other fields.
• Use a stylus if you have one. An Apple Pencil on an iPad gives a noticeably more natural result than a fingertip.
• Remove a saved signature you no longer want. In the signature picker, use the delete option and draw a new one.

When Markup Doesn't Work

Is an Electronic Signature on a PDF Valid?

In the United States, the federal ESIGN Act and the state UETA laws generally give electronic signatures the same legal effect as handwritten ones for most contracts, as long as the signer intends to sign and the record is kept. There are exceptions, such as wills and certain court documents. A drawn Markup signature is a simple electronic signature. It does not include an audit trail or identity verification the way a dedicated e-signature service does. For the details, read our guide to whether an e-signature is legally binding. This is general information, not legal advice, so check the requirements of the receiving party.

When a One-Time Pass Beats Another Subscription

If you sign one or two documents a year, a monthly e-signature or PDF subscription is hard to justify. Markup costs nothing but is limited to simple signing. PDF Editify is a paid product, and you can try the editor without a card before exporting. The One Week Plan is $3 one-time, expires on its own and has nothing to cancel, so it covers a lease, a permission slip and a few forms in one go. If you sign often, the Standard plan is $10 a month or $100 a year, and Lifetime starts at $99 one-time. See the current options on the pricing page.

Signing Multi-Page Documents and Several Signers

Contracts and leases often need a signature on one page and initials on every other page. In Markup, scroll to each page and repeat the plus menu, then choose Signature again and shrink it for initials. Draw a separate, smaller initials version if you want it to look natural. In a browser editor you can usually copy a placed signature and paste it on other pages, which is faster for a 20-page lease.

If two people must sign, finish your signature first, save the file, and send it on. Don't both edit separate copies, because you will end up with two versions and no single document containing both signatures. Name each file clearly, for example lease-signed-by-tenant.pdf, so nobody signs the wrong draft.

Keeping Your Signed Document Safe

• Keep an unsigned original. Duplicate the file before you sign so you can start over if you make a mistake.
• Check the result before sending. Open the saved PDF again and zoom in on every signature to confirm it saved and sits on the line.
• Protect sensitive files. If the document contains an ID number or financial details, add a password with the protect tool before emailing it.
• Avoid public Wi-Fi. Sending a signed contract over an open network is an unnecessary risk. Use cellular data or a trusted network.

Verdict: Which Method Should You Use?

Use Files and Markup for a single signature on a clean PDF, since it is free and already installed. Sign from Mail when you are replying to an attachment. Switch to a browser editor when the document is a scan, needs several fields, or needs precise placement. For most one-off paperwork, that third path saves the most frustration.