Lock PDF and Split PDF for Computer 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:
I signed up for a year. Now simple edit tool to use erase etc expects me to pay more and doesn't allow those tools. That, IMO is a bit too unfriendly. Allowing me to use for some time and then asking to pay for extended period of time would make sense to me as I would see a value in buying these additional editing tools/
Bhadresh T
2015-06-16
What do you like best?
Great tool for creating templates, saves time and money.
What do you dislike?
I have not experienced any problems with using this product. It works as anticipated.
Recommendations to others considering the product:
Excellent tool for my small business
What problems are you solving with the product? What benefits have you realized?
Saving $$$ by not having to purchase forms
User in Real Estate
2019-05-28
If you need to complete forms, you need PDF filler My experience has been good, but I think that for people that don't need to complete a lot of forms per year, there should be a way to pay by form. I can complete any PDF form regardless where I got them from. This form can be saved, printed, and emailed. The user interface could be better and it could have more forms available.
Verified Reviewer
2019-03-12
This little program is life-changing. This little program is life-changing. Needing to continuously reproduce docs from old paperwork and (business) historical documents is insanely time consuming. Retyping, reformatting you name it. Sometimes OCR software doesn't cut it. With this program, I've cut my frustration time by 90%. My production time is a breeze. The remaining 10% is my learning curve, but I"m figuring out more as I go, and when stuck? Kara is in chat to figure it and me out. Done. Well worth the subscription. Thank you!
Christine Freeman
2024-04-22
What do you like best? I love that it makes editing a pdf file quick & easy. What do you dislike? I've not run into any features of the program that I do not like yet. Recommendations to others considering the product: Great little program!! I do recommend. What problems are you solving with the product? What benefits have you realized? I use this program to do quick edits on pdf files.
Christina Geistel
2022-05-17
What do you like best? PDF Filler is extremely easy to use and navigate. I've never experienced any lag or difficulties in using the software. Signatures are easy, dates are easy to inpute. What do you dislike? You don't get to really choose where files are saved when you download them. What problems are you solving with the product? What benefits have you realized? I've been able to easily fill out and save consolidation agreements, settlement letters, and anything else that I need and don't have time to print out and sign just to have to scan it in. It's definitely a time saver!
Nicole Vorron
2021-02-16
Software is easy to use Software is easy to use, even for an old geezer like me. Also, they have the best customer support I have ever experienced online.
Leonard
2020-11-09
I mislead them on my intentions for the service level that I required. Once I brought it to their attention, I answered 3 questions; and the matter was immediately resolved. Outstanding customer service comms. !!!
William J Clements
2020-08-27
I looked at some pdf that were not… I looked at some pdf that were not editable until I found PDFiller. Great experience and so useful in my tax business.
Roger Lubiens
2025-03-11

Lock PDF and Split PDF for Computer

Protect your documents and manage your PDF files easily with the Lock PDF and Split PDF features. These tools offer practical solutions that empower you to handle sensitive information with confidence.

Key Features

Lock PDFs with a secure password to prevent unauthorized access
Split large PDF files into smaller, manageable sections
User-friendly interface for quick and efficient document handling
Compatible with various operating systems for seamless use
No limit on file size or number of splits

Potential Use Cases and Benefits

Secure sensitive business documents before sharing them with clients
Easily organize and manage large reports by splitting them into chapters
Protect personal information in legal documents for privacy
Prepare PDFs for presentations by separating content into distinct sections
Simplify collaboration by allowing different team members to work on smaller files

By using the Lock PDF and Split PDF features, you can take control of your documents. Whether you need to secure a file or divide a lengthy report, these tools address your needs effectively. Enjoy peace of mind knowing your information is safe, while maintaining an organized workflow for all your PDF handling tasks.

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 Encrypt, and select Encrypt With Password. Confirm that you want to change the security of the document. You must save the document to apply the new security settings. Type a name for your file, and click Save.
Open the PDF file you need to add pages to. Click 'Merge' on to add another file. On the preview screen, you can rotate, delete or rearrange the added files in any way you'd like. Afterward, click 'Merge' again in the top right corner to save your new file.
Set criteria for dividing your file. In the secondary toolbar that opens, use the Split by drop-down menu to specify if you want to split the PDF file by number of pages, maximum file size, or top-level bookmarks. Set output options to split your PDF, then click OK. Click the Split button, then click OK again.
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.
Choose To organize Pages > Split. Choose how you want to split a single file or multiple files. Name and save: Click Output Options to decide where to save, what to name, and how to split your file. Split your PDF: Click OK and then Split to finish.
First, open the PDF file that you want to break into different parts. Click on the Tools pane, Pages panel and select the Split Document command. The Split Document dialog allows you to control the split by the number of pages in a file, file size, or by top-level bookmarks.

How to Lock PDF and Split PDF for Computer - 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