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How to edit a PDF on iPhone
To edit a PDF on iPhone, open it in a PDF editor, add text or fill form fields, sign, annotate, reorder pages, and export. Most of this is free and on-device with PDF Toolkit — no Adobe subscription.
Last updated June 17, 2026
Direct answer
Open the PDF in a PDF editor, add text or fill form fields, sign, annotate, and reorder pages, then export an edited copy. On iPhone, the everyday edits — text, forms, signatures, markup — are free and on-device in PDF Toolkit. You only pay for page tools (merge, split, compress) via a one-time $19.99 lifetime or $4.99/month with a 3-day trial. No Adobe Acrobat subscription required.
What “editing a PDF” actually means
“Edit a PDF” covers several different jobs, and which tool you need depends on the job:
- Add or change text / fill a form — type into form fields or drop text onto the page.
- Sign — place a finger, Apple Pencil, or saved signature.
- Annotate — highlight, underline, draw, and add shapes or comments.
- Reorganize pages — merge two PDFs, delete a page, extract a range, or reorder.
- Compress — shrink a large PDF before email, a portal, or a form upload.
The first three are everyday tasks and are free in PDF Toolkit. The last two are the heavier “document surgery” tasks that sit in Pro.
Step-by-step
- Save the PDF to Files, Mail, Messages, or another app you can share from.
- Open the PDF in PDF Toolkit.
- Tap a form field to type, or use the text tool to add text anywhere.
- Tap the signature tool to sign with a finger, Apple Pencil, or a saved signature.
- Highlight, draw, or annotate as needed.
- Open the page organizer to merge, delete, extract, or reorder pages.
- Export the edited copy to Files, Mail, Messages, or the iOS share sheet.
When the built-in Markup is enough
Apple’s built-in Markup (in Files and Mail) can add a signature or a quick annotation to a simple file. Reach for a dedicated PDF editor when you need to fill structured form fields, edit more than once, combine or split pages, compress a large file, or export a clean final copy.
| Need | Built-in Markup | PDF Toolkit |
|---|---|---|
| Quick annotation or signature | Good fit | Good fit |
| Fill a multi-field form | Limited | Built for it |
| Merge, split, or reorder pages | Not the focus | Included in Pro |
| Compress before sending | Not the focus | Included |
| Saved signature workflow | Limited | Built for it |
| iPad + Apple Pencil markup | Basic | Apple Pencil-friendly |
Do I need an Adobe subscription?
No. Adobe Acrobat gates a lot of basic editing behind a recurring plan. For the common iPhone tasks — text, form fields, signatures, annotation, export — PDF Toolkit does it free and on-device, and the advanced page tools are a one-time $19.99 lifetime purchase (or $4.99/month with a 3-day trial, $14.99/year). No weekly traps, no ads, and your PDFs stay on your device unless you choose to export or share them.
Download PDF Toolkit
Edit, fill, sign, merge, and compress PDFs on iPhone.
Free to start. Pro $4.99/month with a 3-day trial, $14.99/year, or $19.99 lifetime. No weekly traps.
FAQ
How do I edit a PDF on iPhone for free? +
Open the PDF in PDF Toolkit and use the free tier to add text, fill form fields, annotate, and sign — entirely on your iPhone, no account. You only pay if you need page operations like merge, split, reorder, or compress.
Can I edit a PDF on iPhone without Adobe? +
Yes. You do not need an Adobe Acrobat subscription. PDF Toolkit handles text, signatures, form fields, annotation, and export on-device, with a one-time $19.99 lifetime option for the advanced page tools.
How do I fill out a PDF form on iPhone? +
Open the form, tap a field to type, and use the signature tool to sign with your finger, Apple Pencil, or a saved signature. Then flatten and export the finished form. Form filling and signing are in the free tier.
Can I add or delete pages in a PDF on iPhone? +
Yes. PDF Toolkit can merge multiple PDFs, extract or delete page ranges, and reorder pages, then export a clean final file. Page operations are part of Pro.
Will editing change the original PDF? +
Export an edited copy when you want to keep the original untouched. The exported file is a new document saved to Files or shared via the iOS share sheet.
Related pages
- PDF Toolkit for iPhone and iPad
- How to sign a PDF on iPhone
- How to compress a PDF on iPhone
- PDF Toolkit vs Adobe Acrobat
Steps
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Step 1
Open the PDF in PDF Toolkit
Tap the PDF from Mail, Messages, Safari, or Files; tap Share; choose PDF Toolkit. The document opens with an editable overlay.
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Step 2
Add text or fill form fields
Tap a form field to type, or use the text tool to add text anywhere on the page. Pinch to zoom for precise placement.
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Step 3
Sign and annotate
Tap Sign to add a finger, Apple Pencil, or saved signature. Use highlight, draw, and shape tools to mark up contracts, notes, or invoices.
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Step 4
Reorder, merge, or delete pages
Open the page organizer to combine PDFs, extract a page range, delete unneeded pages, or drag pages into a new order before export.
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Step 5
Export the edited PDF
Tap Export, choose the edited copy, and share via Mail, Messages, AirDrop, or save back to Files. The original stays untouched.
Frequently asked questions
How do I edit a PDF on iPhone for free?
Open the PDF in PDF Toolkit and use the free tier to add text, fill form fields, annotate, and sign — entirely on your iPhone, no account. You only pay if you need page operations like merge, split, reorder, or compress.
Can I edit a PDF on iPhone without Adobe?
Yes. You do not need an Adobe Acrobat subscription. PDF Toolkit handles text, signatures, form fields, annotation, and export on-device, with a one-time $19.99 lifetime option for the advanced page tools.
How do I fill out a PDF form on iPhone?
Open the form, tap a field to type, and use the signature tool to sign with your finger, Apple Pencil, or a saved signature. Then flatten and export the finished form. Form filling and signing are in the free tier.
Can I add or delete pages in a PDF on iPhone?
Yes. PDF Toolkit can merge multiple PDFs, extract or delete page ranges, and reorder pages, then export a clean final file. Page operations are part of Pro.
Will editing change the original PDF?
Export an edited copy when you want to keep the original untouched. The exported file is a new document saved to Files or shared via the iOS share sheet.