Guide · Updated 2026-08-23

How to add text to a PDF on a Mac

The reason this is annoying is that "PDF" describes three quite different kinds of file, and the right method depends on which one landed in your inbox. Ninety seconds of diagnosis saves an afternoon.

Disclosure: we make AddToPDF, one of the tools mentioned here. Most of this guide is about how to do the job with software you already own or can get for free, because for a lot of readers that is the correct answer.

First, work out which kind of PDF you have

Open it in Preview and click where you want to type.

A cursor appears and you can type. This is an interactive form — the document has real fields built into it. This is the easy case and Preview handles it free.
Nothing happens, but you can select the text on the page with your mouse. This is a flat digital PDF: real text, but no fields. You cannot type into it; you place new text on top.
Nothing happens and you cannot select any text — dragging just draws a box over the page. This is a scan: a photograph of a page. There is no text in it at all, only pixels.

Why this matters

Nearly every "why can't I type on this PDF?" question comes from expecting the first case and having the second or third. In cases two and three, no application on any platform types into the document — they all place new text over it. Once you accept that, the tools all make sense.

Method 1 — Interactive form: just use Preview (free)

If clicking gave you a cursor, you need nothing else.

Open the PDF in Preview (double-click it).
Click a field and type. Press Tab to jump to the next one.
Click checkboxes to tick them; use the dropdowns where they exist.
Press Cmd+S to save.

Preview also has AutoFill for name and address fields, which saves real time on repetitive forms. If this works for you, you are done — close this page.

Method 2 — Flat PDF: Preview's Text tool (free, with caveats)

Preview can place a text box on any page, it is just not obvious and not especially pleasant.

Open the PDF and click the Markup button in the toolbar (the pen-tip icon), or choose Tools › Annotate › Text.
A box containing the word "Text" appears in the middle of the page. Double-click it and type.
Drag the box to where it should sit.
Use the A button in the Markup bar to set font, size and colour.
Cmd+S to save.

The honest caveats: the box always appears in the centre rather than where you clicked, so every entry needs dragging; the default is a large red font that matches no document ever written, so every entry needs restyling; and there is no way to set a default, so you repeat both steps for each piece of text. For one line, it is fine. For twelve fields on a rental application, it is genuinely tedious.

Method 3 — A free third-party editor

PDFgear is free, needs no account, and places text on flat PDFs more comfortably than Preview does. It also edits the PDF's existing text and runs OCR, neither of which Preview or our own app can do. If you want to spend nothing, try this before anything paid.

Method 4 — A dedicated editor

What you are buying, if you buy anything, is the removal of the friction in method 2: click exactly where you want text, type, and have the font stay the way you set it last time.

AddToPDF, which we make, works this way — click anywhere on any page and type, with the style carried over from your last entry, and the text saved as real vector text so it stays sharp and searchable. It also runs on iPhone and iPad from the same purchase, which matters if forms tend to reach you by email on your phone. It cannot edit the text already printed in the document and it has no OCR; if you need either, use PDFgear, PDF Expert, Acrobat or Foxit instead.

AddToPDF — the app we make

A deliberately small PDF editor for Mac, iPhone and iPad: add text, sign, fill forms, organise pages. Fully offline, no account, one-time purchase covering all three devices. It does not edit existing body text or do OCR.

Download on the App Store

Two things worth checking before you send the file

Is your text still searchable?

Save the PDF, reopen it, and press Cmd+F for a word you typed. If it is found, the tool embedded it as real vector text — sharp at any zoom, selectable, copyable. If it is not found, your text was flattened into an image, which will look soft when printed or zoomed. Good tools do the former.

Does it match the page?

Most documents are set in something close to Helvetica or Times at 10–12 point, in black. Matching that is the difference between a form that looks completed and one that looks annotated.

What about editing the text that is already there?

Different job, much harder, and worth being clear about: a PDF stores glyphs at fixed coordinates rather than editable paragraphs, so changing a printed sentence means reconstructing the layout around it. Preview cannot do it. Neither can we. PDFgear, Acrobat, PDF Expert and Foxit can. We compare all of them in our honest comparison of Mac PDF editors.

Frequently asked questions

Can I add text to a PDF for free on a Mac?

Yes. If the PDF has interactive form fields, Apple's Preview fills them for free. If it is a flat PDF with no fields, Preview's Text tool can add a text box, but it is awkward to position and sometimes will not place where you click. PDFgear is a free third-party alternative that handles flat PDFs more reliably. Exporting to Word, editing and re-exporting also works but usually destroys the layout.

Why can't I type on a PDF in Preview?

Two reasons. Either the PDF has no interactive form fields, so there is nothing to type into and you need Preview's Markup Text tool rather than clicking on the page; or the document is a flat scan, which is an image of a page with no text layer at all. In the second case no tool can type 'into' the document — every option places new text on top of the image.

How do I add text to a scanned PDF on a Mac?

A scan is a picture of a page, so you place new text on top of it rather than typing into it. Any tool with a text box will do this — Preview's Markup tools, PDFgear, or a dedicated editor. If you need the scan's existing words to become selectable and searchable, that is OCR, which requires a tool that has it: PDFgear, Adobe Acrobat, PDF Expert or Foxit.

Will text I add to a PDF stay searchable?

It depends on the tool. Better editors embed what you type as real vector text, so it stays sharp at any zoom and can be searched and copied. Some tools flatten your additions into an image, which looks blurry when zoomed and cannot be searched. If searchability matters, check by saving the file, reopening it, and pressing Cmd+F to search for a word you typed.

How do I edit the text that is already in a PDF on a Mac?

That is a different and much harder job than adding text, and Preview cannot do it. You need an editor with true text editing: PDFgear (free), Adobe Acrobat, PDF Expert or Foxit PDF Editor.