Encrypt PDF and Add Page Numbers to PDF for Windows For Free

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Last updated on Dec 12, 2023

Discover the simplicity of processing PDFs online

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Upload your document in seconds
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Fill out, edit, or eSign your PDF hassle-free
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Download, export, or share your edited file instantly
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

Every PDF tool you need to get documents
done paper-free

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Create & edit PDFs

Generate new PDFs from scratch or transform existing documents into reusable templates. Type anywhere on a PDF, rewrite original PDF content, insert images or graphics, redact sensitive details, and highlight important information using an intuitive online editor.
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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.

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:
excellent, extremely professional and easy to use. Great customer service. Best money I ever spent on the APP Department. Recommended it to everyone. Hands down it is worth your time to investigate.
raymond s
2015-02-20
It was really easy to fill out the forms and print them. Normally, I wouldn't spend money for this type of service, as I can just print the PDF document from the internet. This time, however, I just didn't want to have to write all the information. Also, if I wanted to make changes, I loved that I could change any field and not have to write over it (as I would have otherwise).
Linda S
2015-06-17
Easy to use. Haven't found a form it couldn't handle. I had an issue recently where it would not allow me to save a copy of the completed form as a PDF on my computer. Weird. Otherwise 5 stars
Patrick
2015-10-18
i am just starting a new company and your service has been essential in that i have a way to edit our flyers our price list and being able to add things for the customer like check boxes and signature lines has been a god send thank you
leanne h
2017-05-20
Very good tool to add editable fields… Very good tool to add editable fields to pdf files. The maneuvering process can be a little awkward and can use some user feedback in those regards, but all in all, very worth the price.
C B
2022-12-30
I chatted with two reps for over an… I chatted with two reps for over an hour each with no results. I then chatted with KARA and in less than five mins my problems were solved. Kara is earning her pay cheque, she is a true asset to this company. YOU NEED YO PAY HER MORE MONEY.
Anthony Guadag
2022-09-27
EFFICIENT AND PROFESSIONNAL AMAZING SERVICE, i use their services for my wine list at work, works perfectly, and also customer service is great! i made a mistake on my subscription, Paul helped me from their alive chat straight away and refunded me within hours. highly recommended!
jennifer roos
2021-12-18
Grateful User <3 Have been using PDFiller for a couple years now and it has been just such a gift to be able to handle all of the forms and documents I get for gigs or administrative tasks and be able to fill them out and send them from any of my devices immediately. Thank you guys <3
Trevan McClure
2021-09-01
A student-friendly experience I used this for easy homework access since they were in PDF formats. There was a problem with my subscription and payment process. I am glad my concerns were addressed in a friendly and hassle-free manner. More power to your company.
Ana Gomez
2025-01-01

Encrypt PDF and Add Page Numbers to PDF for Windows

Protect your sensitive documents and improve their organization with our Encrypt PDF and Add Page Numbers features for Windows. This tool not only secures your PDF files but also enhances their professionalism with clear page numbering.

Key Features

Strong PDF encryption to prevent unauthorized access
Customizable page numbering options for better document navigation
User-friendly interface for quick and easy operation
Compatibility with various PDF formats
Batch processing for efficiency

Potential Use Cases and Benefits

Secure contracts and sensitive information for businesses
Organize reports and manuals for easier referencing
Protect personal documents, such as tax forms and medical records
Enhance presentations with numbered pages for clarity
Streamline collaborative projects by assigning clear document structure

This tool addresses your need for security and organization. By encrypting your PDFs, you safeguard your private information from prying eyes. Simultaneously, adding page numbers helps you maintain a clear flow in your documents, making navigation straightforward. You can focus on your work knowing that your documents are both secure and structured.

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
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 Encrypt PDF and Add Page Numbers to PDF for Windows - 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