The simplest ways to edit a PDF on Mac without buying new software

You can edit a PDF on your Mac using tools you already have. The built-in Preview app lets you add text, draw, sign documents, and rearrange pages. If you need to change the actual text inside the PDF — not just add notes on top — you have two main routes: convert the PDF to a different format first, or use a dedicated PDF editor. Most people find Preview enough for marking up documents, filling forms, or combining files.

The method you choose depends on what you're actually changing. Adding your signature to a contract? Preview handles that in seconds. Rewriting paragraphs or changing fonts? You'll need to convert the PDF to Word or Google Docs first, or use a paid editor like Adobe Acrobat Pro.

Key Takeaways

  • Preview, which comes free on every Mac, can add text boxes, signatures, drawings, and annotations to any PDF without installing anything else.
  • To edit the actual text inside a PDF, you must either convert it to Word or Google Docs first, or use a dedicated PDF editor.
  • Rearranging pages, deleting pages, and combining multiple PDFs all work in Preview by dragging pages in the sidebar.
  • If a PDF is locked or password-protected, Preview will tell you immediately and you cannot edit it without the password.

Using Preview to mark up and annotate a PDF

Open the PDF in Preview by double-clicking it or right-clicking and selecting "Open With" > "Preview". Once it opens, click the markup toolbar icon in the top right — it looks like a toolbox. This reveals buttons for text boxes, shapes, signatures, and a drawing tool.

To add a text box, click the text icon (looks like a capital A), then click anywhere on the page and type. You can resize the box by dragging its corners. To sign a document, click the signature icon, select "Create Signature" if this is your first time, and draw your signature with your trackpad or mouse. Preview saves your signature so you can reuse it on other PDFs.

To draw or highlight directly on the page, use the pen tool or highlighter. Click the pen icon and choose your color and thickness from the options that appear. These changes save automatically to the PDF when you close it — Preview doesn't create a separate edited version.

Rearranging, deleting, or combining pages in Preview

Open the PDF and click View in the menu bar, then select "Thumbnails" to see all pages in a sidebar on the left. You can now drag pages up or down to reorder them, or right-click a page and select "Delete" to remove it. These changes save to the original PDF.

To combine multiple PDFs into one, open the first PDF in Preview, then go to Edit > Insert > Page from File. Select the second PDF and choose where to insert its pages. Repeat for as many PDFs as you need to combine. This is faster than most online tools and keeps everything on your computer.

Converting a PDF to edit the actual text

If you need to change the words, fonts, or formatting inside the PDF itself, Preview won't work — you need to convert it first. The easiest method is to open the PDF in Google Docs. Go to drive.google.com, click "New" > "File Upload", select your PDF, then right-click the uploaded file and choose "Open With" > "Google Docs". Google Docs converts the PDF to an editable document.

The conversion isn't perfect — complex layouts may shift, and images might move — but the text becomes editable. You can then download the edited version as a PDF by going to File > Download > PDF Document. This works best for simple documents like letters or forms.

If you have Microsoft Word on your Mac, you can also open a PDF directly in Word. Click File > Open, select your PDF, and Word will convert it. Word's conversion is often more accurate than Google Docs for formatted documents, but it's not perfect either.

Using paid PDF editors for complex changes

If you frequently edit PDFs and need professional results, consider Adobe Acrobat Pro, which costs around $15 per month. It lets you edit text directly in the PDF without converting, add or remove pages easily, and handle scanned documents with OCR (optical character recognition) to make the text searchable and editable.

Alternatives include PDFtk Pro (one-time purchase, around $5) for basic editing and page manipulation, or Preview's free capabilities paired with Google Docs for conversion when needed. For most people, this combination covers 90% of PDF tasks without paying anything.

What to do if the PDF is locked or password-protected

If you try to edit a PDF and nothing happens, it may be locked. Preview will show a lock icon in the toolbar if the document is protected. Some PDFs are locked to prevent printing or copying but allow editing; others are fully locked and require a password to open at all.

If you have the password, Preview will ask for it when you first open the file. If you don't have the password and you own the document, contact whoever sent it to you and ask them to unlock it. There is no legitimate way to remove a password from a PDF you don't own.

Saving your edited PDF with a new name

When you edit a PDF in Preview, the changes save to the original file by default. If you want to keep both the original and the edited version, go to File > Duplicate before making changes. This creates a copy you can edit while leaving the original untouched.

Alternatively, after editing, go to File > Export As, give it a new name, and save it as a separate PDF. This is useful when you're experimenting with changes or need to preserve the original for reference.

Frequently Asked Questions

Can I edit a scanned PDF on Mac?

Preview can add text and annotations to a scanned PDF, but you cannot edit the scanned text itself because it's stored as an image. To edit scanned text, you need OCR software like Adobe Acrobat Pro, which converts the image to searchable, editable text. Google Docs also offers basic OCR when you upload a scanned PDF.

Why did my PDF changes disappear?

Preview saves changes automatically, but only if you close the file normally. If your Mac crashed or you force-quit Preview, unsaved changes are lost. If you edited in Google Docs or Word and forgot to download the PDF, your changes exist in that app but not on your computer. Always download or export after editing in a conversion tool.

Can I edit a PDF on my iPhone or iPad?

Yes. The free Notes app on iOS and iPadOS can open PDFs and add markup, signatures, and text. Open the PDF in Files or Mail, tap "Markup", and use the same tools available in Mac Preview. Changes save back to the original file or a copy, depending on where the PDF is stored.

What's the difference between editing and annotating a PDF?

Editing means changing the actual content — rewriting text, deleting paragraphs, changing fonts. Annotating means adding notes, highlights, or signatures on top of the existing content without changing it. Preview does annotation; to edit, you must convert the PDF first or use a dedicated editor.

Is it safe to upload my PDF to Google Docs?

Google Docs is encrypted in transit and at rest, and Google doesn't sell your documents. However, if the PDF contains sensitive information like financial records or medical data, you may prefer to keep it offline. For routine documents, Google Docs conversion is safe and convenient.