Guides / Nudocs for Mac
Edit the existing text in a PDF on your Mac
Can you edit existing text in a PDF on a Mac? What Preview does, when to edit the source file instead, and how to ask Nudocs to replace text in a copy.
Updated
Apple silicon · macOS 13 or later · Nutrient DWS account required
Short answer
Preview, the PDF app built into macOS, can’t change the text that’s already in a PDF. It can add text boxes, fill in forms and mark up pages. To replace existing text, edit the source document and make a new PDF, or ask a PDF editor such as Nudocs for an edited copy.
What Preview can do with PDF text
Apple’s Preview guide says you can’t edit the text of a PDF in Preview. It offers other ways to work with the text on the page, and they are useful for reviewing and filling in documents. None of them changes the words already there.
- Select and copy text with Tools > Text Selection, then Edit > Copy, and paste it into another document.
- Highlight selected text to point something out.
- Add a text box with the Text tool, type in it, and drag it into place.
- Click a form field and type your text. If a PDF won’t let you type into the form, add a text box instead.
Edit the source document instead
If you have the document the PDF was made from, change the text there and make a new PDF. Pages can open and edit Microsoft Word documents (.doc and .docx), then save them as Pages or Word documents, or as PDF. To make the PDF, choose File > Export To > PDF in Pages, or choose File > Print in the app you’re using, then Save as PDF from the PDF pop-up menu.
This only works when you have the original. Apple’s Pages guide notes that you can’t open PDFs in Pages, so Pages won’t help with a PDF on its own.
Why replacing PDF text is harder than it looks
PDFs are built for a fixed layout. Text is placed at set positions on the page, and paragraphs don’t reflow around an edit the way they do in a word processor. A replacement that is longer than the original may not fit the space the old words used.
That is why short, like-for-like changes are the safest to make in a PDF: a corrected name, a reworded sentence, an updated product line. If you need to rewrite whole sections or change the layout, editing the source document is usually the better route.
With Nudocs
Nudocs is a document agent for your Mac. You can ask it to revise selected text in an existing PDF and save an edited copy, rather than adding text on top of the page.
Open the PDF and quote the exact words you want replaced and what should replace them. Say where they are, such as the page or section, and say what must stay the same. Ask for a separate output so you can compare it with the original.
Layout preservation is not guaranteed, so check the edited region and the rest of the page. Editing the PDF you supplied and generating a replacement document are different jobs; check which one you got.
Nudocs runs on Macs with Apple silicon and macOS 13 or later, and you need a Nutrient DWS account. The Mac app is free; document and AI services use DWS free allowances or paid usage. Depending on the task, your instructions and document content may be sent to AI providers and Nutrient services, so read the desktop Privacy Policy before you add files.
Example request
“On page 2 of this brochure, replace “Open 9am to 5pm, Monday to Friday” with “Open 8am to 6pm, Monday to Saturday”. Don’t change anything else, and save an edited copy for me to review.”
Before you use it
What to check
- Read the replaced text in full in the edited copy, word by word.
- Check line breaks and wrapping, especially if the new text is longer than the old.
- Compare the font, size and color with the text around it.
- Look for other places the old wording appears, such as a summary or footer.
- Check tables, links and images on the same page, then reopen the saved PDF before you share it.
Questions
- Can Preview edit existing text in a PDF on a Mac?
- No. Apple’s Preview guide says you can’t edit the text of a PDF in Preview. You can add text boxes, highlight text and fill in form fields, but the original words stay as they are.
- Can I edit a PDF in Pages?
- No. Apple’s Pages guide says you can’t open PDFs in Pages. Pages can open Word documents, so if you have the original .docx, edit that and export a new PDF.
- What kinds of text changes suit Nudocs?
- Bounded changes to an existing PDF: a date, an amount, or selected text. Say exactly what to change and what to leave alone, then check the edited copy, because layout preservation is not guaranteed.
- Is my document sent anywhere?
- Depending on the task, your instructions and document content may be sent to AI providers and Nutrient services. Read the desktop Privacy Policy and the app’s privacy settings before you add files.
Get Nudocs
Try it on your next document task. You might even love it.
Download for Mac →For Macs with Apple silicon running macOS 13 or later. A Nutrient DWS account is required. The Mac app is free; document and AI services use DWS free allowances or paid usage, depending on your plan and task. Check DWS pricing.