Password Protect PDF and Split PDF for Windows 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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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:
I got confused a couple of times when using PDFfiller, but their customer support was outstanding; they immediately responded and were very helpful. PDFfiller is a solid solution for filling out yearly tax paperwork on my Mac. I'll be using it every year now.
Sean F
2015-01-20
Great experience, have to redo tax form sent and was not able to fill form out with other downloaded program. Have it done a printed now running to post office, needs sent out ASAP.
Charlene M
2015-01-27
Easy to use no time at all to adjust to figuring out the layout and process of using the system and the trial is great to see if you are applicable with using it highly recommended.
Anonymous Customer
2019-06-04
A reliable and quick to use PDF signing and editing platform Quick and easy signing for PDF forms, especially on mobile devices. PDFfiller is web-based, so it's easy for me to access on my phone if I need to quickly sign or edit a PDF file. Additional features in the paid subscription model (more editing options), would convince me to sign-up for the paid versions of the software.
Stuart E.
2020-02-29
Excellent, easy to use and saves a lot of time It has saved me time mainly and a lot of hassles in getting physical signatures. I have signed and shared documents within minutes rather than signing/scanning or mailing. If you want to save time and get your documents signed ASAP, PDFfiller is a must have software. You can use it anywhere as long as you're online and you can edit it too without any hassles. It's very affordable.
Verified Reviewer
2018-01-30
I am not the most skilled with modern technology. As a startup NFP we don’t have the financial capacity to either hire, or contract with an accounting professional to prepare our year end 990s. I personally took it upon myself to do the necessary paperwork. I kept losing my work, and did not know how to save it without Word. I stumbled upon pdfFiller and decided to sign up. The retrieval and storage of my docs (either completed or still being worked on) is so simple now that even I can do it! The work has become easier thanks to pdfFiller. Thank you. Matt
Matt B
2023-06-07
Easy to Use It's been fantastic to use to add whole sections into a document without having to re-do everything. We haven't required something like this often, so I love that I can access this software for free, on an as-needed basis. Haven't needed to use the software enough to have any issues arise that I couldn't troubleshoot on my own.
Tammy S.
2021-06-10
Excellent Excellent! intuitive user interface, i was happy to know we could draw the signature directly from within the application, very happy with this service!
Just Someone
2021-05-26
I love the product just don't have the need to justify a full subscription. I enjoyed the trial period and had great Customer Service when needed. Very prompt with replies. I would recommend this product.
Kim R
2020-10-02

Password Protect PDF and Split PDF for Windows

Secure your documents with the Password Protect PDF and Split PDF feature for Windows. This tool offers a simple way to manage your PDF files, ensuring sensitive information stays private and accessible only to authorized users.

Key Features

Easily add password protection to your PDFs
Split large PDF files into smaller, manageable parts
User-friendly interface for quick navigation
Supports various PDF versions
Retain high quality during splitting and protecting

Potential Use Cases and Benefits

Protect financial statements and contracts from unauthorized access
Share important documents while keeping them secure
Organize and manage large PDFs for better productivity
Enhance document sharing by splitting PDFs for easy uploads
Simplify compliance with data protection regulations

This feature effectively solves your document management problems by combining security and convenience. Password protection keeps your information safe, while splitting large files makes it easier to share and navigate through content. Take control of your PDFs and ensure they meet your privacy needs.

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
Drag and drop your PDF into the PDF Splitter. Choose to 'Extract every page into a PDF' or 'Select pages to extract'. For the latter, select the pages you wish to extract. Click 'Split PDF', wait for the process to finish and download.
One-click option to protect a PDF with a password Choose File > Protect Using Password. Alternatively, you can choose Tools > Protect > Protect Using Password. Select if you want to set the password for Viewing or Editing the PDF. Type and retype your password.
Download and install the program. Select Split mode of the program. Add PDF file. Prepare PDF file. Choose split type. Specify the output location. Split password-protected PDF file.

How to Password Protect PDF and Split 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