Lock PDF and Encrypt PDF for Laptop 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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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:
Works great, nice little addition would be the ability to copy sections of already input text and drop more copies of that same text on other parts of the page. Would make what I do ALOT easier.
Wayne
2015-03-30
When the court clerk doesn't have customized forms for filing, this is so much easier than trying to perfectly fill out long, generic forms by hand in blue or black ink!
Loni
2015-05-17
i like how the team at PDFfiller make things happen. The recipient box is useful and suddenly the email is ready to be sent to a certain school. Also how you helped me to create a cover letter relating to the Teacher for Science vacancy Very professional. Thank you Brent Walton 2 June 2019
Brent W
2019-06-02
What do you like best?
The interface of PDFfiller is simple and intuitive. I think that most people can sign up and start using PDFfiller without having to spend much time figuring things out. Once we load a PDF into the system, there are straightforward menu items and labels that help to fill out virtually any form from start to finish. I can save to PDF format with my filled-in information or print right from the PDFfiller website.
What do you dislike?
Anytime I post my information online, I get apprehensive about how my data is being used. Though I'm sure PDFfiller probably takes measures to keep our uploaded and saved documents secure, I just never know with all the malware and server attacks that often occur, in general.
Recommendations to others considering the product:
Some people probably don't want to hassle with putting their documents through a digitized system, but I think once you upload one form to PDFfiller, you'll see how intuitive the entire process and may possibly not print out documents to fill them out anymore.
What problems are you solving with the product? What benefits have you realized?
My handwriting is basically terrible and I often get strains when writing since I typically haven't written by hand much over the past several years. PDFfiller lets me fill out PDF documents more effortlessly and lets me align text and other objects with great precision.
Thomas Ayukawa
2019-12-10
Better than Adobe PDF! Better than Adobe PDF and much much more affordable. Ideal for those with need to edit their documents but not too frequently.
Shasha Malik
2020-03-25
easy to use pdf filler I use my pdffiller for all my real estate needs! I like the convenience of uploading docs from the internet I don't like how files are stored, it requires too much renaming.
Jonas D.
2019-01-26
You get what you expect What I expected from this when I signed up. It is easy to use when editing pdf files, I need to submit for my school requirements. So far, I am satisfied on what I am experiencing and giving it a 5 star.
Lyle
2023-05-01
Very helpful website that is also… Very helpful website that is also realistic in allowing its customers a reasonable free trial. Very efficient and well thought through.
Abigail Casson
2021-10-25
Very easy to use, only thing is learning for a beginner is how to save the files so that they are editable in Microsoft word, and the work of art is not all over the place in the word document, thanks a lot! 10 stars for the service!
sterling c
2025-04-08

Lock PDF and Encrypt PDF for Laptop

Protect your sensitive documents with our Lock PDF and Encrypt PDF features for your laptop. You can now secure your files with ease and ensure that only authorized users can access them. Embrace peace of mind knowing your information is safe.

Key Features

User-friendly interface for quick access
Strong encryption algorithms for maximum security
Password protection to restrict unauthorized access
Option to lock individual PDFs or batch lock multiple files
Ability to remove passwords when necessary

Potential Use Cases and Benefits

Ideal for professionals handling confidential client information
Useful for students protecting their research papers and projects
Great for businesses sharing sensitive documents with stakeholders
Perfect for anyone looking to enhance their information security at home or work

By using our Lock PDF and Encrypt PDF features, you can solve your data security challenges. No more worrying about unauthorized access to your important files. Make the decision to keep your documents safe and maintain your privacy with ease.

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
Open the PDF and choose Tools > Protection > Encrypt > Encrypt with Password 6. If you receive a prompt, click Yes to change the security. 7. Select Require A Password To Open The Document, then type the password in the corresponding field.

How to Lock PDF and Encrypt PDF for Laptop - 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