PDF tool for Mac

Fill in a PDF form without printing.

Applications, school forms, tax forms, rental forms: type the answers, sign, and send a copy where the answers can’t be edited.

Download for Mac

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

In short: To fill out a PDF form on a Mac, drag it, pause and choose Fill form in Sheaf, type into the fields, then save a copy (optionally with the answers locked into the page). Preview also lets you type into form fields.Updated 13 November 2026

Sheaf's action circle open around a dragged PDF
Form filledAnswers locked into the page
Stays on your MacNo upload, works offline
No accountNothing to sign up for
Originals untouchedEvery result is a new file
One-time purchaseNo subscription
How it works

Fill PDF forms 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. Choose More › Fill form

    Type the answers, then save, or lock them so they can’t change.

Your options on a Mac

Three ways to do it, honestly compared.

Preview (built in)

Click a field and type; save.

  • Free and built in
  • Types into form fields
  • Answers stay editable

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.

  • Type into form fields
  • Lock the answers into the page
  • Sign the completed copy

Lock the answers

A filled form usually stays editable: anyone can change an answer. Choosing to lock (flatten) the answers draws them into the page, which is what many offices and courts ask for.

Forms without fields

Scanned forms have no fields to type into. Print-and-scan is the fallback, or ask the sender for a fillable version.

Then sign

Finish by signing the PDF, and compress it if it must be uploaded.

Questions

How do I fill out a PDF form on a Mac?

Open it in Preview and click the fields, or drag it onto Sheaf and choose Fill form.

How do I make a filled form uneditable?

Choose to lock the answers in Sheaf; they’re drawn into the page.

Why can’t I type into my PDF form?

It may be a scan with no form fields. Ask for a fillable version, or print and scan it.

Keep going

Related tools and guides

Sign PDF

Draw once, place it anywhere.

Compress PDF

Shrink scans and decks, keep text sharp.

Merge PDFs

PDFs and images into one file, with bookmarks.

For home paperwork

Taxes, leases, school forms.

For students

Assignments, scans and forms.

Upload size limits

IRS, USCIS, ATO and more, with sources.

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

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