Unlock PDF and Add Page Numbers to PDF for iPhone For Free

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Last updated on Jan 16, 2026

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Fill out & sign PDF forms

Say goodbye to error-prone manual hassles. Complete any PDF document electronically – even while on the go. Pre-fill multiple PDFs simultaneously or extract responses from completed forms with ease.
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Organize & convert PDFs

Add, remove, or rearrange pages inside your PDFs in seconds. Create new documents by merging or splitting PDFs. Instantly convert edited files to various formats when you download or export them.
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Collect data and approvals

Transform static documents into interactive fillable forms by dragging and dropping various types of fillable fields on your PDFs. Publish these forms on websites or share them via a direct link to capture data, collect signatures, and request payments.
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Export documents with ease

Share, email, print, fax, or download edited documents in just a few clicks. Quickly export and import documents from popular cloud storage services like Google Drive, Box, and Dropbox.
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Store documents safely

Store an unlimited number of documents and templates securely in the cloud and access them from any location or device. Add an extra level of protection to documents by locking them with a password, placing them in encrypted folders, or requesting user authentication.

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What our customers say about pdfFiller

See for yourself by reading reviews on the most popular resources:
PDF filler proved to me that they care about clients. PDF filler proved to me that they listen to the customers and react to client questions and comments quickly and with a positive approach. The product itself is easy to use and manage and everything you would want when working with PDF files and managing your business.
Donna Rae Sinclair
2019-04-22
The PDF writer worked perfect for what I needed Pretty easy to use and worked just as advised. I needed this to fill out PDF documents vs. printing them out and hand writing them. In addition finish product is neat and looks professional. Don't have any negatives other than if it where free it would be even better, but the fee is small in relationship to what you gain.
Dave M.
2017-11-20
It gives me a lot of options to pdf editing It gives me a lot of options to pdf works that I did not find somewhere else, and even when I cannot readily pay for the service, I was given a trial with no gimmicks attached
Andre
2023-01-09
Amazing customer support I had to contact customer support because I, out of my own negligence, got charged for one of their products. They were extrememly helpful and resolved the issue, even though they had no reason to do so (except sympathy). Extremely nice customer support. Definitely recommend.
Alexandre Lopez
2021-11-14
A 1st Class Product - I Highly Recommend it ! I have been their client for many years , and I would recommend anyone to be come one , you have only to gain as their product is Fantastic .I must complement their customer support team , they are very much client oriented and they would resolve any issues that you might incur at no time.
Gary
2021-08-16
pdfFiller Has Never Disappointed Me - They are My Trusted Admin Source pdfFiller has never disappointed me with the choice of fillable forms and the ease of completing and saving the documents. For Form document completion, they are my Trusted Administrative Assistant, and I would not recommend any other company for the service they provide.
Russell Huffman
2021-07-06

Unlock PDF and Add Page Numbers to PDF for iPhone

Are you tired of being unable to access your important PDF files or needing to organize them better? With our Unlock PDF and Add Page Numbers feature for iPhone, you can conveniently manage your PDFs without hassle.

Key Features

Easily unlock password-protected PDFs
Quickly add page numbers to any PDF file
User-friendly interface designed for iPhone
Secure processing to maintain your document's privacy
Support for various PDF formats

Use Cases and Benefits

Access work documents that your team shared but locked
Organize e-books or research materials with numbered pages
Prepare official documents for presentations or meetings
Share customized PDFs with clients or colleagues
Streamline your PDF management process for effective access

This feature addresses the common challenge of locked PDF files. By using it, you will save time and effort in unlocking documents and arranging them as you please. Enjoy seamless access and management of your PDF files on your iPhone, all while keeping your data secure.

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Create, edit, and share PDFs even on the go. The pdfFiller app equips you with every tool you need to manage documents on your mobile device. Try it now on iOS or Android!

For pdfFiller’s FAQs

Below is a list of the most common customer questions. If you can’t find an answer to your question, please don’t hesitate to reach out to us.
What if I have more questions?
Contact Support
Choose Tools > Protect > Encrypt > Remove Security. Remove Security: The options vary depending on the type of password security attached to the document. If the document has a Document Open password, click OK to remove it from the document.
Your iPhone or iPad is designed to open PDF files automatically. If you are having this problem with some PDF documents, it is possible that those PDF documents may be corrupted. These files cannot be opened if they are corrupted. Perhaps the PDF file you could not open was not downloaded properly.
Find the PDF file in the Files or other app where the PDF file is saved, select it, tap the action menu, then choose Open in Documents. You will then be prompted to type in the password in order to open it. Once the PDF file is opened in the Documents app, tap the Menu button, then choose Change Password.
Open Locked PDF Drag and drop your password-protected PDF into this tab. If your PDF file has an open password, then you will get a new window to ask for the open password. Just enter the correct password to open it. If your PDF file has the permission password, then you can open it in Chrome directly.
Tap on the Edit icon in the top right corner of the PDF editor app on iPhone, then select the PDF files you want to combine, finally tap the Merge button at the screen bottom to merge the selected PDF files together into one PDF file on your iOS device.
Send the PDF to iBooks. Tap the “Open in iBooks” button that appears. If you have another PDF reader, tap the “Open in” button instead then select the app. View your PDF in iBooks or your PDF reader. If you opened it in iBooks, it will be stored in the app and in your iCloud storage so that you can always access it.
Insert Page Numbers in a PDF To do so, go to the “Tools” menu and click “Edit PDF” if editing is not enabled. Click the header or footer where you want the page numbers. Click where you want the page number, select the text font and size you want and click the “Insert Page Number” button.

How to Unlock PDF and Add Page Numbers to PDF for iPhone - video instructions

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