How to Write on PDF on iPhone or iPad

You can write on a PDF on your iPhone or iPad using the Notes app or Xodo for iOS. This guide shows you how to type text, add hand written text, and draw signatures on your PDF pages. Learn how to review, edit, update, and collaborate around your documents from anywhere.

You don’t need a MacBook or paid desktop software to write on your PDF files.

You can add text, draw, annotate, highlight, comment, and even sign a PDF right from your iPhone or iPad.

The built‑in Notes app offers basic markup tools, while PDF editor apps like Xodo provide a full workspace for students, teachers, and power users.

This guide breaks down the full process, covering:

• How to write on PDF using the Notes app
• Steps for writing on a PDF with Xodo PDF editor
• Additional ways to work with PDFs
• Answers to frequently asked questions

How to write on a PDF with the Notes app

To write on a PDF on iPhone using Notes, follow these steps:

1. Open the PDF inside Notes and tap Edit at the top.
2. Choose a Pencil tool, highlighter, or eraser from the toolbar.
3. Write, draw, delete or resize markup as needed.
4. You can also add typed content by dragging a text box from the Markup menu, though formatting options are limited.
5. Tap Done to save.

The Notes app is helpful for fast markup, but it doesn’t support e‑signing flows, form filling, or advanced review tools.

How to write on a PDF with Xodo Mobile

Here's how to write and type on a PDF on iPhone or iPad with Xodo:

1. Install Xodo Mobile for iOS

• Install the Xodo PDF editor on your iPhone or iPad.

2. Open your PDF in Xodo Mobile

• Launch the Xodo app.
• Tap View and Edit to open your file browser.
• Locate your PDF and tap to open it.

3. Write and add text on your PDF

Xodo supports typing text, handwriting, and signing. Use any of the following methods to write on your PDF:

a) Type text on your PDF

• Tap the Text icon.
• Tap on the page where you want to write.
• Start typing.
• Adjust the text font, size, and color at the bottom of the screen.
• Xodo auto‑saves your changes in your Processed files folder.

Use typed text for forms, comments, explanations, and updates that need clean, readable text.

b) Write freehand with the pen

• Tap the Pen tool.
• Pick a pen color from the toolbar.
• Write using your finger, stylus, or Apple Pencil.
• Adjust the opacity, stroke size, or color.
• Tap the Back button to save your changes.

Use freehand for quick handwritten notes, markups, comments, and correcting content.

c) Fill forms and add signatures

• From the Toolbox menu, tap on eSign PDF.
• Select your PDF file.
• Tap on the Signature, Text, or Date tools.
• Tap on the each field.
• Enter text, add date, create and insert your signature.
• Tap on Finish to save.

Use the signature tool for intake forms, static forms, contact information fields, and quick updates to client or HR documents.

4. Save your edited PDF

• Tap Back to save your edited PDF.
• Your updated file will be added to the Processed files folder.

Do more with Xodo on iPhone or iPad

Xodo includes additional PDF tools designed for reviewers, teachers, students, and professionals who need more than basic markup.

• PDF protection
  Apply passwords or permanently redact sensitive PDF information.
• Annotation tools
  Highlight text, underline sections, add notes or insert comments.
• PDF editing
  Modify your documents by rotating, merging, and splitting pages or compressing PDFs.
• File conversion options
  Turn PDFs into Word, Excel, PowerPoint, or JPG and convert those documents and images to PDF.
• Scan and OCR text
  Scan document with your iPhone's camera, recognize text and make scanned PDFs searchable and easy to navigate.

These tools help you review, update, and manage documents directly on your iPhone or iPad, from anywhere.

Frequently asked questions

1. Can I write on any PDF with my iPhone?

Yes. If the PDF file isn’t password protected, you can annotate, type, or write on it in Xodo or Notes.

2. Does writing on a PDF change the original file?

No. Writing on a PDF doesn't change the original file. Your edits are saved to a new version unless you choose to overwrite the original.

3. Is Xodo free on iOS?

Yes. Xodo is free to use on iOS. The core editing tools for writing, highlighting, and signing are free. Premium tools require you to start a free trial or subscribe.

4. Can I use Apple Pencil in Xodo?

Yes. Apple Pencil works for writing, drawing, and annotations. The Xodo app supports most standard styluses.

5. Can I sign a PDF with Xodo?

You can add a simple signature. For legally binding workflows requiring signer roles or audit trails, use the Xodo Sign tab inside the app.

Write on PDF documents with iPhone or iPad

Writing on a PDF from your iPhone or iPad is simple with the right tools.

The Notes app works for quick edits, while Xodo Mobile gives you professional features for typing, forms, signatures, and reviews without the Adobe Acrobat price tag.

Try writing on a PDF today with Xodo on your iOS device.