The simplest way to edit a PDF on iPhone

You can edit a PDF directly on your iPhone using the built-in Notes app or Apple Books, or by using free apps like Adobe Acrobat Reader or PDF informed. The method depends on what you need to change — marking up a document takes seconds, while replacing text or moving pages requires a different approach.

The fastest route for most people is the Notes app, which opens PDFs and lets you highlight, underline, draw, and add text boxes without installing anything new. If you need to edit the actual text inside the PDF or rearrange pages, you'll want a dedicated PDF editor, most of which offer a free version with basic tools.

Key Takeaways

  • The Notes app comes built into every iPhone and can highlight, underline, and add text boxes to PDFs without needing another app.
  • Editing the actual words in a PDF requires a dedicated PDF editor app, since the Notes app only marks up documents rather than changing text.
  • Adobe Acrobat Reader and PDF informed both offer free versions that let you edit text, add pages, and delete pages on your iPhone.
  • Changes you make in the Notes app save automatically, but you should save edited PDFs from other apps before closing them.

Using the Notes app to mark up a PDF

Open the PDF in any app — Mail, Safari, Files, or your email — then tap Share and select Notes. The PDF will open in a new note with a toolbar at the bottom showing a pen, highlighter, and eraser. Tap the pen icon to draw, the highlighter to shade text, or the text tool (marked with a plus sign in a circle) to add typed text anywhere on the page.

The Notes app saves your changes automatically, so you don't have to do anything else. If you want to send the marked-up PDF to someone else, open the note, tap Share, and choose Mail, Messages, or another app. The PDF will attach with all your markups included.

This method works well for signing documents, highlighting important sections, or adding comments. It does not let you change the words that already exist in the PDF, delete pages, or rearrange them — those tasks need a different tool.

Editing text and pages with Adobe Acrobat Reader

read Adobe Acrobat Reader from the App Store (it's free). Open the app, tap the Files icon at the bottom, and select the PDF from your iPhone or iCloud. Tap the pencil icon at the top right to enter edit mode.

Once in edit mode, you can tap any text to change it, add new text by tapping the text tool, or delete sections by selecting them and pressing delete. To add or remove pages, tap the three dots at the top right, select Organize Pages, then tap the plus icon to add a blank page or swipe left on a page to remove it. When you're done, tap Done and the changes save automatically.

Adobe's free version covers most common edits. If you need advanced features like form filling with saved information or converting PDFs to other formats, those require a paid subscription, but the free version handles basic text changes and page management.

Using PDF informed for detailed editing

PDF informed is another free option that many people find easier to navigate than Adobe. read it from the App Store, open it, and tap the plus icon to select a PDF from your device or cloud storage. Tap the PDF to open it, then tap the edit icon (pencil) at the bottom.

In edit mode, you can tap text to change it, add new text boxes, draw, highlight, and delete pages by swiping left on them in the page sidebar. PDF informed's interface is simpler than Adobe's, and the free version includes all the basic editing tools most people need. The paid version adds features like batch processing and advanced form tools, but you won't need it for routine edits.

One advantage of PDF informed is that it handles large files more smoothly than some other apps, so if you're working with a PDF that's several hundred pages long, it may feel faster.

Editing PDFs from email or cloud storage

If the PDF is in your email, open the message and tap and hold the PDF attachment until a menu appears. Select Copy, then open your PDF editor app and paste it in. Alternatively, many email apps let you tap the PDF directly and choose Open in to send it to your editor of choice.

For PDFs stored in iCloud Drive, Google Drive, or Dropbox, open the Files app on your iPhone, navigate to the PDF, tap and hold it, and select Open in to choose your editor. The edited version will save back to the same cloud location, so you don't have to move files around manually.

If you're working with a PDF that someone else is also editing, be aware that most iPhone apps don't support real-time collaboration the way desktop versions do. Make your changes, save, and send the file to the next person rather than trying to edit simultaneously.

Saving and sharing your edited PDF

After you finish editing, the app will either save automatically or prompt you to save. Check the top of the screen or look for a Save button. If you edited a PDF from email or cloud storage, the changes usually save back to the original location, but it's worth checking your app's settings to confirm.

To share the edited PDF, tap Share or the export icon (usually three dots or an arrow pointing out of a box). You can send it via Mail, Messages, AirDrop, or save it to Files, iCloud Drive, or another cloud service. Some apps let you choose the file format — if you want to keep it as a PDF, make sure that option is selected before you send.

Frequently Asked Questions

Can I edit a PDF directly in Mail on my iPhone?

Not directly in Mail itself, but you can open the PDF attachment in Mail, tap Share, and choose Notes or another app to edit it. Once you've made changes in that app, you can attach the edited version to a new email.

What's the difference between marking up and editing a PDF?

Marking up means adding highlights, underlines, drawings, and text boxes on top of the existing document without changing the original words. Editing means changing or deleting the text that's already there. The Notes app marks up; Adobe and PDF informed can do both.

Will editing a PDF on my iPhone change the original file?

Only if you save over it. When you open a PDF and make changes, most apps let you save as a new file or replace the original. Check the save dialog to see which option you're choosing, or save with a new name if you want to keep the original.

Can I edit a PDF that's password protected?

If the PDF is locked to prevent editing, you'll need to remove the password first, which usually requires the password itself. Most iPhone PDF apps will prompt you to enter the password when you try to edit. If you don't have it, you'll need to contact whoever created the PDF.

Is there a free way to edit PDFs on iPhone, or do I need to pay?

The Notes app is completely free and built into your iPhone. Adobe Acrobat Reader and PDF informed both offer free versions with basic editing tools. You only need to pay if you want advanced features like batch processing or premium design tools.