Lock PDF and Split PDF for Desktop For Free

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Last updated on Sep 26, 2025

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:
Great product for my home-based business. No more searching online for forms or templates and cutting/pasting the old fashioned way! Easy to use and all of the documents my business uses.
Dawn
2015-11-03
I've only used this service once, and I'm pleased with the outcome. My document looked more professional and I will use this service again. I think it's a bit pricey, so I suggest the company use a "one-time-purchase" option or free trial before buying.
Ruth
2016-05-29
needed to print out applications, employment verifications and a background questionaiire that required it be typed, printed out and sent via US mail. Most online PDF's will not supply editing capabilities. Thanks PDFillier!
Wilfredo G
2016-10-01
It is easy to fill out proposals with your template. I wish there was a way to make it easier to access it because I will be using that document many times and so far I have had to search for it.
deborah c
2018-08-05
Great for what I needed it for Needed to complete nursery registration forms for my daughters (which were emailed to me in PDF format), but have no access to a printer, so really appreciate software like this! Was quickly able to complete, and then email back to the nursery.If you are someone who regular needs to complete PDF's online, then you would really benefit from this.Was slightly confusing to begin with, but quickly got my head around it.
JadeDrew
2020-03-21
It is my alternative for quick editing of pdf documents I edit PDF documents quickly It's software is quite intuitive. It is easy to handle. To fill out forms is great. Also to add the signatures to the documents Once I wrote to technical support and I'm still waiting for an answer. It's the only negative I can say. In the end I solved the problem I had in another way
LIDIA M.
2018-07-10
I didn't know there's such a site make people life easy, i was searching on google for a form and this site pop up, and i said let me try it, and i am so satisfied and grateful.
Wahi
2022-01-18
Really came through for me when I was charged a subscription fee. Being a small business owner, things get hectic. I had used it for my taxes and meant to cancel it but forgot. They cancelled my subscription and refunded the fee with no questions asked. Too bad it really wasn't a good fit for my business."
Ann
2021-03-06
Love how easy it is to navigate and how I can auto... Love how easy it is to navigate and how I can auto fill any areas that I need to write in again. It's very practical and I will be recommending it to anyone, especially because i can access legal documents so easily!
Diana A.
2020-06-07

Lock PDF and Split PDF for Desktop Feature

Secure your documents and manage your PDFs with ease using the Lock PDF and Split PDF features for desktop. This powerful tool enables you to protect sensitive files and organize your content effectively.

Key Features

Apply password protection to your PDF files
Easily split large PDF documents into smaller, manageable parts
Combine multiple PDFs into a single document
User-friendly interface for effortless navigation
Supported on various desktop operating systems

Potential Use Cases and Benefits

Protect confidential information, such as contracts or financial statements
Organize lengthy reports or presentations into concise sections
Facilitate sharing large documents by splitting them into smaller files
Combine related documents for easy access and review
Enhance productivity by simplifying PDF management tasks

This tool effectively addresses your need for security and organization. By locking your PDFs, you safeguard your information from unauthorized access. Additionally, the ability to split and combine files allows for flexibility in document management. Streamline your workflow and gain peace of mind knowing your important documents are both safe and well-organized.

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.
You can extract one page at a time or multiple pages within a range. This feature does not allow you to select a range of pages to export each page as an individual PDF document. Right-click in the PDF, and select Extract Pages from the right-click menu.
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.
First, Download the tool & select Split option. Click on Add Files / Add Folder option insert the PDF files. Enter the password for the secured PDF documents. Choose the required PDF Split option and browse the destination.

How to Lock PDF and Split PDF for Desktop - 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