Annotate PDF Files on iPhone & iPad
The fastest way to annotate PDF files on your iPhone or iPad. No uploads, no accounts, no hassle.
- Highlight, underline, and draw on PDFs
- Add notes and comments to any page
- Apple Pencil support for precise markup
To annotate PDF files on iPhone, download BossPDF from the App Store, tap Annotate, select your files, and you're done. It works offline and takes seconds.
How to annotate pdf on iphone
- 1
Open BossPDF
Launch the app and open the PDF you want to annotate.
- 2
Select an annotation tool
Choose highlight, underline, draw, or add a note.
- 3
Mark up the document
Highlight text, draw arrows, or add comments where needed.
- 4
Use Apple Pencil
For precision, use Apple Pencil to draw and annotate.
- 5
Save your annotations
Save the annotated PDF — markups are embedded in the file.
Why this matters
Annotating PDF files shouldn't require a computer, a subscription, or uploading sensitive documents to a server. Whether you're on a commute, in a meeting, or working from the couch — you need a tool that just works, right on your phone.
Why BossPDF
- Highlight, underline, strikethrough, and freehand draw
- Add sticky notes and text comments
- Full Apple Pencil support on iPad
- Multiple colors and line thicknesses
- Annotations are saved in standard PDF format
How people use BossPDF
Highlighting key passages in lecture slides while studying.
Marking up a client's brief with questions and suggestions.
Adding comments and corrections to student assignment PDFs.
Annotating a proposal with feedback before sending to the team.
Related guides
Frequently asked questions
How do I annotate PDF files on my iPhone?
Download BossPDF from the App Store, open the app, tap "Annotate", select your files, and tap the action button. Your annotated PDF is ready in seconds.
Is BossPDF free to use for annotating PDFs?
Yes, you can try every feature free. BossPDF offers a free trial with no watermarks. Pro plans start at $4.99/week for unlimited access.
Can I annotate PDFs offline with BossPDF?
Yes. BossPDF processes everything on your device. No internet connection needed, and your files are never uploaded to any server.
Does BossPDF work on iPad?
Yes. BossPDF is optimized for both iPhone and iPad, with full support for Apple Pencil and the larger screen.
Can I annotate multiple PDFs at once?
Yes. BossPDF supports batch processing — select multiple files and process them all in a single tap.
Fast. Simple. Done.
Stop fighting with PDF tools. Download BossPDF and get it done in seconds.
Download on App Store