---
title: "How to Sign a PDF on Mac (No Account, No Upload)"
description: "Sign PDFs on your Mac in seconds: draw your signature once, then place it on the first, last or every page. Your signature stays on your Mac."
url: https://sheafai.app/sign-pdf-mac
---

PDF tool for Mac

# Sign a PDF on Mac without printing it.

Leases, offer letters, school forms and invoices. Draw your signature once and put it exactly where it belongs, on any page, in seconds.

[Download for Mac](https://apps.apple.com/app/id6830258390)

**Free 7-day trial** · then one purchase, no subscription · macOS 14+

**In short:** To sign a PDF on a Mac, drag it, pause and choose Sign in Sheaf, then drag your saved signature onto the page. Sheaf keeps the signature only on your Mac and saves a new signed copy. Preview’s Markup › Sign also works for single documents.Updated 13 November 2026

**Stays on your Mac**No upload, works offline

**No account**Nothing to sign up for

**Originals untouched**Every result is a new file

**One-time purchase**No subscription

How it works

## Sign PDF in three moves.

No app to open, no window to find. It happens where the file already is.

1. **Drag**

Start dragging the file from Finder, Mail, Photos or your desktop.

2. **Pause**

Hold still for a moment. Sheaf’s actions open in a circle around your cursor.

3. **Let go on Sign**

Drag your signature where it belongs. Choose first page, last page or every page.

Your options on a Mac

## Three ways to do it, honestly compared.

### Preview (built in)

Markup toolbar › Sign, then place the signature.

- Free and built in
- Can capture a signature with the camera
- One document at a time

### Online PDF sites

Upload the file to a website, wait, download the result.

- Your document goes to someone else’s server
- Free plans limit files, size or tasks per day
- Needs an internet connection

### SheafFastest

Drag the file, pause, let go.

- Signature kept only on your Mac
- First page, last page or every page
- Sign several PDFs in the same spot at once

## Sign once, reuse forever

Draw your signature with the trackpad or mouse the first time. Sheaf remembers it on this Mac, so next time signing takes one drag. It’s stored locally and never uploaded.

## Exactly where it belongs

Pages scroll vertically, and you can place a signature on each page that needs one, at the size you want. For a stack of documents that all need a signature in the same place, sign them together.

## Is it legally binding?

In many countries a simple electronic signature is valid for everyday agreements like leases, offer letters and permission slips, but rules vary by country and document type. For regulated documents (some real estate, court or government forms), check what the other party requires; some need a certified digital signature service.

## Fill in the form first

If the PDF has form fields, [fill them](https://sheafai.app/fill-pdf-form-mac) before signing, then sign the completed copy.

**Sheaf for Mac**

Every PDF tool, right where you drag the file.

- Works offline
- Originals never changed
- Undo any result
- One purchase, no subscription
[Download for Mac](https://apps.apple.com/app/id6830258390)

## Questions

Is a drawn signature legally binding?

In many countries a simple electronic signature is valid for everyday agreements, but rules vary. For regulated documents, check what the other party requires.

Where is my signature stored?

In Sheaf, only on your Mac. It is never uploaded.

Can I sign a PDF on Mac without Adobe?

Yes. Preview’s Markup › Sign and Sheaf both sign PDFs without Adobe Acrobat or an account.

Can I sign several PDFs at once?

Yes. Drag them together and choose Sign; the signature goes in the same place on each.

Keep going

## Related tools and guides

[**Fill PDF forms**

Type into forms, lock the answers.
](https://sheafai.app/fill-pdf-form-mac)[**Merge PDFs**

PDFs and images into one file, with bookmarks.
](https://sheafai.app/merge-pdf-mac)[**Password-protect PDF**

Lock a PDF before you send it.
](https://sheafai.app/password-protect-pdf-mac)[**Compress PDF**

Shrink scans and decks, keep text sharp.
](https://sheafai.app/compress-pdf-mac)[**For job seekers**

Résumés, applications, offer letters.
](https://sheafai.app/pdf-tools-for-job-seekers-mac)[**For real estate**

Sign, merge, photos to PDF.
](https://sheafai.app/pdf-tools-for-real-estate-mac)

## Your next PDF takes one second.

Drag it, pause, let go. Free for 7 days, then yours with one purchase. Family Sharing included.
[Download for Mac](https://apps.apple.com/app/id6830258390)

Mac App Store · macOS 14 or later · Apple silicon and Intel