Lock PDF and Split PDF for Windows

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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
Note: Integration described on this webpage may temporarily not be available.
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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
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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

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:
PDFfiller is a very helpful tool. However, I do feel there are aspects that could be improved. For example, it would be useful to be able to fill in ovals.
Werner H
2016-03-27
There are things I still can't figure but overall, I am getting the hang of it and it seems fine. It takes a while to go between pages but that could be on my end.
Church Relations Coordinator, Care Net P
2018-10-29
What do you like best?
Ease of use! Very intuitive program that does NOT require a lot of training to use.
What do you dislike?
I use the program infrequently in my present roll, so was surprised by the page lay-out change. It was a bit more difficult to simply pick it up and understand the new format.
What problems are you solving with the product? What benefits have you realized?
I use PDFfiller for city and county land-use applications. Having the ability to complete these varying forms simply, and have them stored for future use is invaluable!
User in Civil Engineering
2019-02-27
Cool az Cool az, easy to nagigate, edit and save to your device. For the price, way better than Adobe who try to make you pay pay pay, have outrageously pricey monthly payments n bla bla bla. This is way more affordable Thanks team Nga mihi Sonny
Sonny Kameta scarf
2024-05-21
Top notch tool for all your document editing needs pdf, word and much more It has been great using PDF filller, its awesome to be able to edit and sign documents from my personal computer and use them for school and work. Everything is pretty seamless and self explanatory, and I have yet to experience any real issues.
Justin Thibodeau
2023-09-12
Helpful program with good customer support This program makes it much easier to complete a complex form than doing it by hand and the customer support is very responsive.
Charles Gomes
2022-04-12
It's been fine so far although this is my first experience with it. I would like to be able to reduce the font size but I can't find where to do this.
John K
2021-08-01
Convenience for all! It makes all our documents look professional. Imagine the combined functionalities of Word and Adobe put together into one software. This is what you get Uploading and downloading larger documents might take a while sometimes. What do you think about this review?
lily Turner
2021-05-30
Excellent Product I was able to accomplish the task at hand with little effort. I am so pleased with this product that I have already shared it with several other people.
Janet B
2021-03-16

Lock PDF and Split PDF for Windows

Protect and manage your PDF files easily with our Lock PDF and Split PDF features. These tools simplify the way you handle documents, ensuring both security and flexibility for your work.

Key Features

Lock PDF files with strong password protection
Split large PDF documents into smaller, manageable files
Merge multiple PDF files into one for easier access
User-friendly interface suitable for everyone
Compatible with various Windows versions

Potential Use Cases and Benefits

Secure sensitive information in business reports and contracts
Divide lengthy PDFs for better organization and sharing
Combine receipts or invoices into a single file for easier tracking
Facilitate file sharing without compromising data protection
Enhance productivity by organizing PDFs efficiently

Our Lock PDF and Split PDF features address your document management challenges effectively. By locking important files, you prevent unauthorized access, ensuring your data remains confidential. Additionally, splitting and merging PDFs allows you to work with your documents in a more organized manner, eliminating clutter and streamlining your workflow. Experience hassle-free document handling today.

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
Click File > Info > Protect Document and select Restrict Editing. Your document then displays a Restrict Editing pane on the right-hand side of the document for formatting and editing restrictions. Here, you can give people permission to read your document, select what parts they can edit, and choose how they do it.
Protecting PDF files with Safeguard is very simple. Right-click on your PDF files, then in Safeguard Secure PDF Writer, choose the PDF protection options: Stop printing, allow printing or limit the number of prints. Add dynamic watermarks to viewed and or printed pages.
Open a PDF file and click 'View' on the main menu > Select 'Split View'. Open the files in two tabs and click the area between the tabs. Click the View settings button on the top toolbar. Drag and drop one tab over another one to enable the split mode.
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.

How to Lock PDF and Split PDF for Windows - video instructions

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Try the PDF solution that respects your time.
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