The fastest way to edit a PDF on a Mac without extra software

You can edit PDFs directly on a Mac using the Preview app, which comes built in. Open the PDF in Preview, click the markup toolbar icon (it looks like a pen tip in a circle), and you can add text, draw, highlight, or sign the document. Changes save automatically to the file unless you choose to save as a new version.

Preview works for basic edits: adding your signature, filling in form fields, highlighting text, or drawing boxes and arrows. If you need to change the actual text content of the PDF — rewriting sentences, deleting paragraphs, or restructuring pages — Preview cannot do that. For those changes, you need a dedicated PDF editor or to convert the PDF back to its original format.

Key Takeaways

  • Preview, the built-in Mac app, can add signatures, text boxes, highlights, and drawings to any PDF without installing anything new.
  • Preview cannot edit the original text inside a PDF or rearrange pages; those tasks require a separate PDF editor.
  • For text editing, you can convert the PDF to Word or Google Docs, make changes there, and export back to PDF.
  • Paid PDF editors like Adobe Acrobat Pro or PDFtk offer full editing power but cost money or have subscription fees.
  • Free online PDF editors exist but require uploading your file to a third-party server, which matters if the document contains sensitive information.

Using Preview to add marks, text, and signatures

Open the PDF by double-clicking it or right-clicking and selecting "Open With" > "Preview." Once the PDF is open, look for the toolbar at the top. If you do not see it, press Command + Shift + A to show the markup toolbar.

The toolbar contains several tools. The text box tool (looks like a "T") lets you click anywhere on the page and type new text. The signature tool (looks like a pen) lets you sign the document using your trackpad or mouse. The highlighter, pen, and shape tools let you mark up the document visually. Click the tool you want, then click or drag on the PDF to use it.

When you are done, press Command + S to save. Preview saves changes directly to the original file by default. If you want to keep the original unchanged, press Command + Shift + S instead to save as a new file with a different name.

Editing the actual text content inside a PDF

Preview cannot change the text that was already in the PDF. If you need to rewrite sentences, delete paragraphs, or move content around, you have three main routes: convert to Word, use a dedicated PDF editor, or use an online tool.

Converting to Word or Google Docs works if the PDF was originally created from a document. Right-click the PDF, select "Open With" > "Word" or upload it to Google Drive and open it in Google Docs. The conversion is not always perfect — formatting may shift, and complex layouts can break — but the text becomes editable. Once you make your changes, export the file back to PDF.

Dedicated PDF editors like Adobe Acrobat Pro, PDFpen, or Coherence X let you edit text directly inside the PDF. Adobe Acrobat Pro costs $180 per year or $20 per month. PDFpen costs $80 one-time or $10 per month. These tools preserve the PDF format and handle complex documents better than conversion, but they require payment.

Free online PDF editors like Smallpdf, ILovePDF, or PDFtk.com let you upload a PDF, edit it in your browser, and download the result. These are free but require sending your file to a server you do not control. Do not use them for documents with passwords, financial information, or other sensitive data.

Rearranging, deleting, or adding pages

Preview can delete pages but cannot add or rearrange them easily. To delete a page, open the PDF in Preview, press Command + Shift + A to show the thumbnail sidebar on the left, right-click the page you want to remove, and select "Delete." Save the file.

To add pages or rearrange existing ones, you need a dedicated tool. Adobe Acrobat Pro, PDFpen, and free online editors like Smallpdf all let you drag pages to reorder them and insert blank pages or pages from other PDFs. If you only need to combine two PDFs, Preview can do that: open the first PDF, press Command + Shift + A to show thumbnails, then drag the second PDF into the thumbnail panel.

Filling out PDF forms on a Mac

Many PDFs are forms with blank fields for you to fill in. Preview can handle these. Open the form in Preview, and if the form has interactive fields, you can click each one and type your answer. The form will recognize the fields automatically.

If the form does not have interactive fields — if it is just a scanned image of a form — you can still fill it out using Preview's text tool. Click the text box tool, click where you want to add text, and type. This method is slower but works for any form.

When to use iCloud or cloud storage for PDF editing

If you work on the same PDF across multiple devices, store it in iCloud Drive, Google Drive, or Dropbox. On a Mac, you can edit it in Preview, and on an iPhone or iPad, you can edit it in the Files app or the Notes app. Changes sync across devices automatically.

For collaborative editing — where multiple people need to mark up the same PDF — Google Drive is simpler than iCloud. Upload the PDF to Google Drive, share the link with others, and everyone can open it in Google Docs or a PDF viewer and add comments. Comments appear in real time, and you can see who made each change.

Frequently Asked Questions

Can I edit a PDF that is password protected?

Preview cannot edit password-protected PDFs. You need to remove the password first using a dedicated PDF tool like Adobe Acrobat Pro or an online password remover. Be aware that removing a password you do not own may violate the document owner's rights.

Does Preview keep the original PDF if I make changes?

No. Preview saves changes directly to the file by default. To keep the original, use Command + Shift + S to save as a new file instead of Command + S.

What if the PDF is a scanned image and not actual text?

Preview cannot edit scanned images. You can add text boxes on top using the text tool, but you cannot change the image itself. To extract and edit the text from a scanned PDF, you need optical character recognition (OCR) software like Adobe Acrobat Pro or free tools like Tesseract.

Can I convert a PDF to Word on a Mac for free?

Yes. Upload the PDF to Google Drive, right-click it, select "Open With" > "Google Docs," and Google will convert it. Once converted, download it as a Word file. The conversion is free but may not preserve complex formatting perfectly.

Is it safe to use free online PDF editors?

Free online editors work, but they upload your file to their servers. Do not use them for documents with passwords, financial data, medical information, or anything confidential. For sensitive files, use Preview or a paid desktop app instead.