01
Open your PDF
Choose it from Mail or Files.
If you don't care about apps
Got a PDF in Mail or Files and no printer? You don't need to print it, sign it with a pen, and take a photo. Open it on the iPhone, sign with your finger, send it back. If the other person can't see your signature, flatten the file first.
The print, sign, scan loop
Plenty of offices still say it: print the form, sign it, scan it or take a photo, and email it back. That made sense when everyone had a printer. Many people don't anymore. "I don't have a printer" is one of the most common reasons people search for how to sign a PDF without printing.
The loop also produces a worse file. A phone photo of a signed page is often crooked, shadowed, and hard to read. A multi-page document becomes a stack of images. Some offices reject it and ask you to do it again.
Signing the PDF directly avoids all of that. The original pages stay sharp, and your signature sits on the right line.
Try Apple Markup first
Your iPhone can already do this. Tap the PDF in Mail, tap the Markup (pen) icon, tap +, then Add Signature. Draw, place, tap Done, and reply with the signed file.
All you need is the PDF on your phone, a finger, and a reply to the original email. No scanner app, no photo of paper, no trip to a print shop.
For a one-page form going to someone on an iPhone or Mac, that's genuinely enough. The catch is that Markup adds your signature as an annotation layer, and some Windows and Android viewers don't show it. See Apple Markup vs a signing app for when that matters.
How to sign a PDF without printing, using eSign PDF
1
Open the PDF from Mail or Files
Tap the attachment, tap Share, and choose eSign PDF. If you only have a paper copy, scan it with the camera inside the app.
2
Make your signature once
Draw it with your finger, type your name in a handwriting style, or import a photo of your pen signature from paper.
3
Sign, date, and fill
Tap to place your signature. Add the date, initials, and checkmarks where the document asks.
4
Flatten and send it back
Export. The app flattens the file so your signature shows on any device. Reply to the original email with the signed PDF attached.
Prefer your pen signature? Photograph it once on white paper and import it.
Open your PDF. Add your signature. Send it back.Mistakes that bring the printer back
- ✕Sending a phone photo of a printed, signed page instead of the signed PDF itself.
- ✕Sending an unflattened file to someone on Windows. They see a blank signature line and ask you to print it.
- ✕Signing the last page and missing initials or dates on the pages before it.
- ✕Uploading a lease or tax form to an unknown website just to add a signature.
- ✕Waiting until you're near a printer at work or a library. The PDF was signable on your phone the whole time.
When you may still need paper
In the US, the federal ESIGN Act says a signature can't be denied legal effect just because it's electronic. That covers most everyday documents. Some documents are excluded or have their own rules, such as wills, some court papers, and anything that must be notarized in person. If the sender says they need an original ink signature, ask them. If they use their own signing link, use theirs.
For a step-by-step on the iPhone side, see how to sign a PDF on iPhone. Signing a lease? See how to sign a lease on your phone.
What it costs
Apple Markup: free. eSign PDF: $59.99 one-time (US), no account, works offline, nothing leaves your iPhone. Other plans and local prices are shown in the App Store.
FAQ
How do I sign a PDF if I don't have a printer?+
Open the PDF on your phone from Mail or Files, sign it with your finger using Markup or a signing app, and email it back. No printer or scanner needed.
Can I just take a photo of my signed paper and send it?+
You can, but photos are often crooked and hard to read, and some offices reject them. Signing the PDF directly keeps the original pages sharp.
Is a signature I drew on my phone valid?+
In the US, the ESIGN Act says a signature can't be denied legal effect just because it's electronic. Some documents, like wills and notarized papers, have their own rules.
Can I use my real pen signature without printing?+
Yes. Sign a blank sheet of paper once, take a photo, and import it as your signature in eSign PDF.
Do I need an account to sign a PDF on iPhone?+
Not with Markup or eSign PDF. eSign PDF works on-device with no account for $59.99 one-time (US).