Lock PDF and Encrypt PDF for Desktop Gratis

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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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Última actualización el 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:
It's great. My kids have a lot of form for school that we have to print, sign, and then scan back into the computer. This prevents them (or me) from having to do this, great software!
Jennifer C
2017-05-20
so far so good...I have just tried it today with billing to Medicare and I hope the forms go through properly and the claims are paid. I will not know how this works until I see if the claims have been honored.
Marjorie L Roblin L
2017-09-03
Some instructions were rather confusing but customer support helped me to find my forms and get them printed and deleted. Thank you for your assistance.
Marian
2019-06-06
PDF filler is a real time saver PDF filler is really good for formatting forms that don't come with editable text boxes. This is really useful for me as it saves me having to print off forms, write on them and then upload and send them back. I have had an issue where one of the forms I was working on suddenly refreshed and I lost my progress. But it's only happened once
Yvonne A.
2019-05-22
Must Have! This program is awesome for creating new contracts or clients, you can even email it and have them sign online. It automatically charges you for a year so make sure you choose monthly billing if you would like to be billed differently than annual.
Rebecca B.
2023-01-27
pdfFiller has been amazing since I had to start working from home. It has allowed me to send in forms that I would normally have to print out write on and scan then email them back. This has cut down the middle man as well as saving me from getting a printer scanner and paper. It is time, cost and environmentally friendly.
Julia
2020-12-30
Excellent and very useful Excellent and very useful. And good customer service! I was confirmed a refund quickly after contacting them (although I still have to wait for the transfer)
Jarot
2020-11-16
This program is a life saver. I personally, have horrible handwriting and this saved me from the embarassment of turning this in with horrible handwriting
Ethan D
2020-06-25
This has been a great tool for me This has been a great tool for me. Trying to apply for a new apartment has been difficult due to the quarantine but this allowed us to sign and fill out whatever we need with little interaction with others. The 30 day fee trial was great for me and I will recommend this to anyone who might need it.
Shannon Cotter
2020-05-05

Lock PDF and Encrypt PDF for Desktop

Secure your important documents with our Lock PDF and Encrypt PDF feature. This tool allows you to protect your files from unauthorized access, ensuring that your sensitive information remains safe.

Key Features

Apply password protection to your PDFs with custom encryption levels
Prevent unauthorized printing, copying, and editing of your documents
Simple and user-friendly interface for easy navigation
Batch processing to secure multiple files at once
Compatible with various PDF formats
Create secure copies without altering original documents

Potential Use Cases and Benefits

Protect confidential corporate information and client data
Secure personal documents like tax returns and identification proofs
Ensure compliance with legal and regulatory guidelines
Share sensitive files safely with colleagues or clients
Prevent data breaches and unauthorized access to files

Using our Lock PDF and Encrypt PDF feature can solve your problem of document security. By encrypting your files, you can confidently share them without worrying about prying eyes. This tool gives you control over who can access your information, letting you focus on what truly matters.

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 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