Convert Word to PDF and Lock PDF for iPhone For Free

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Up to 100 MB for PDF and up to 25 MB for DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, JFIF, XLS, XLSX or TXT
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Edit, manage, and save documents in your preferred format

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Convert documents with ease

Convert text documents (.docx), spreadsheets (.xlsx), images (.jpeg), and presentations (.pptx) into editable PDFs (.pdf) and vice versa.
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Start with any popular format

You can upload documents in PDF, DOC/DOCX, RTF, JPEG, PNG, and TXT formats and start editing them immediately or convert them to other formats.
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Store converted documents anywhere

Select the necessary format and download your file to your device or export it to your cloud storage. pdfFiller supports Google Drive, Box, Dropbox, and OneDrive.
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Convert documents in batches

Bundle multiple documents into a single package and convert them all in one go—no need to process files individually.
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Preview and manage pages

Review the documents you are about to convert and exclude the pages you don’t need. This way, you can compress your files without losing quality.
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Protect converted documents

Safeguard your sensitive information while converting documents. Set up a password and lock your document to prevent unauthorized access.

How to quickly convert and compress your PDF?

Upload your document

Upload a document from your device, cloud storage, email, or URL.
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Use the converter tool

Select your document and click Convert .
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Select format and destination

Decide on the file type and where you want to save the converted document—on your device or in your cloud storage.
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Manage pages and additional settings

Once everything is set, you can access advanced settings to compress a document by excluding unnecessary pages, set passwords, and select other options.
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Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
High Performer - Summer 2025
Regional Leader - Summer 2025
Easiest To Do Business With - Summer 2025
Best Meets Requirements- Summer 2025

Customer trust by the numbers

64M+
users worldwide
4.6/5
average user rating
4M
PDFs edited per month
9 min
average to create and edit a PDF
Join 64+ million people using paperless workflows to drive productivity and cut costs

Why choose our PDF solution?

Cloud-native PDF editor

Access powerful PDF tools, as well as your documents and templates, from anywhere. No installation needed.

Top-rated for ease of use

Create, edit, and fill out PDF documents faster with an intuitive UI that only takes minutes to master.

Industry-leading customer service

Enjoy peace of mind with an award-winning customer support team always within reach.

What our customers say about pdfFiller

See for yourself by reading reviews on the most popular resources:
I thought I was purchasing a one-month subscription (I didn't select the correct button prior to the check-out process and was not advised of the amount before I hit Submit). Would REALLY like a refund of the yearly subscription - am very happy to pay the19.99 for one month. Please...
Robin G
2015-09-07
Love being able to annotate and sign documents. Would love to learn how to interface with others and what is involved asking someone not using PDFFiller to sign a document.
Mark R
2016-04-11
I couldn't get my document to print and Anne in customer service looked at my document and resolved this issue in less than 3 minutes. Great customer service!
lisa
2016-11-04
I really like it. I have not read all of the instructions, but have used it on several forms. Would like to know how to print a form, without all of the background being printed. I mean, I upload a form. Fill it in and then try to print to the form that I have. It prints everything, when I just want to print what I filled in. For instance, had a problem with my QuickBooks. Wanted to print a check, quickly. Thought I will just upload a check, fill it in and print in on my check. It wanted to print everything. Of course, the bank will not take that, because if it just isn't quite right, it can look altered. Is there a way to do it? Of course, as you know everyone just wants to start working and not read the instructions. Thank you
Sylvia N
2018-02-16
Hands down, the best PDF tool! I haven't come across any other feature filled tool like this one; it's a solid 10/10. The support team is excellent! My technical issue was resolved in a record 30 minutes!
Andrew Muteti
2024-12-07
Experienced user back for more I've used pdfFiller in the past and it has always fulfilled the needs I've had of allowing me to fill in documents just as if I had been sitting at a typewriter (I know I'm dating myself by saying that). The ability to do so and add signatures, save documents to a cloud folder, print the documents when needed, or even have the documents notarized or submitted to the IRS is a major time-saver! I trust that the team behind this product will continue to find ways to save people like me time without costing great sums of money. Do that and I may be able to continue to find room in my tight budget for you!
Lawrence McCarter
2023-12-09
What do you like best? Simple to use, the ability to save, update and reuse common forms is really helpful What do you dislike? Haven't found anything yet but have been only using 60 days or so What problems are you solving with the product? What benefits have you realized? detailed forms that only require minor changes can be saved as templates.
User in Insurance
2021-07-30
Must have I don't have anything to do. The application is clear. I'm a french user, but's is okay for me. I hope i've explain my self well. I recommands this application.
CLAUDINE ANGOUNOU
2020-10-14
I love the product I love the product, however the one improvement I would like to see is the ability to combine documents into one or insert pages from a different document.
Franklin Mom
2020-06-03

Convert Word to PDF and Lock PDF for iPhone

Transform your documents with ease. The Convert Word to PDF and Lock PDF feature for iPhone helps you create and secure your essential files effortlessly. Whether you are working on business reports or personal documents, you can manage your content effectively.

Key Features

Convert Word documents to PDF format quickly.
Password-protect your PDFs to ensure the safety of your information.
User-friendly interface designed for seamless navigation.
Support for multiple languages to cater to a wider audience.
Share and store your PDFs directly from the app.

Potential Use Cases and Benefits

Ideal for professionals preparing reports or presentations.
Useful for students needing to submit assignments securely.
Perfect for anyone wanting to share PDFs without worrying about unauthorized access.
Enhances collaboration by providing a secure format for document exchange.
Saves time with quick conversions and easy document management.

This feature addresses your needs by providing a straightforward solution for document conversion and security. You can eliminate the worry of altering document formats and losing essential information. With this tool, you control your files, ensuring that they remain private and secure. Enjoy the convenience of managing your documents directly from your iPhone.

Get documents done
from anywhere

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
Tap the More menu in the top right corner of the Word app. You will get a screen like below. Choose Print from above menu, you will then open a new Print screen as shown in below screenshot. Microsoft Word allows you to print out Word document using a wireless printer.
Create your document or open an existing PDF document using Word. From the File menu select Save As. Browse to a location to save the document. Select PDF (*. In the PDF options section check to Encrypt the document with a password option. You will be prompted to type in the password twice and then click OK.
Run the file manager app on your iPhone or iPad. Tap Settings at the bottom, select Enable Password, you will then be able to set a password to protect any sensitive data on the phone.
Once the PDF file opens in Documents app, tap on the Menu button (three dots) in the top right corner to bring up menu at the lower section of your iPhone screen. Choose Set Password. Then type in the same password twice. Finally, hit the Set button to confirm and encrypt your PDF file on iPhone or iPad.
Open any type of document or image file on your iPhone or iPad running iOS 10 or later. Tap Share at the bottom of the screen. Scroll across the icons to find and select Print. A preview will open onscreen: pinch to zoom in and view the document full-screen. This preview is actually a PDF!

How to Convert Word to PDF and Lock PDF for iPhone - video instructions

#1 usability according to G2

Try the PDF solution that respects your time.
Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
High Performer - Summer 2025
Regional Leader - Summer 2025
Easiest To Do Business With - Summer 2025
Best Meets Requirements- Summer 2025