Password Protect PDF and Encrypt PDF for Server 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
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
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:
The learning curve is fairly easy and short. Still learning features as I go. I use the program every two weeks and generate four documents each time. I've been able to look up every document that I have needed and able to open and edit and print. There are occasions that he document will cut off part of the header or will not allign the text correctly. However, that's about 3% (or less) of the time.
Thomas
2016-03-17
I am looking for a company wide solution that works for us to electronically fill out pool construction contracts and then have customers sign them and notify our accounting department of the signed contracts
Rachel H
2017-07-28
PDF filler seems to be very useful. Is/was slightly difficult to figure out but once understood is fairly easy to use. Unfortunately the price is too high for those of us on fixed income. Is there anything lower cost for disabled seniors? Please?
Donald S
2017-08-24
I wish I didn't have to pay. I would have found another free site, like going to SSI site, but I had already filled in all the blanks and it was so time consuming that it wasn't worth the effort. I will cancel as soon as I get the bill.
Marya H
2018-11-11
Very easy to use I like that it notifies me when someone has completed the document. I also like how you can customize the fields between numbers and dates which makes it fool proof. Support is very quick to respond and helpful. I have been trying to set up a document to copy certain fields throughout so they do have to enter their "name" every time, but I have had trouble trying to figure it out.
Vanessa D.
2017-11-27
Very good tool to add editable fields… Very good tool to add editable fields to pdf files. The maneuvering process can be a little awkward and can use some user feedback in those regards, but all in all, very worth the price.
C B
2022-12-30
No Scanning! I'm just PDF Filling It makes capturing my customer's signature hassle-free as my business is online. No do-overs! Thank you! Because I make it mandatory for them to sign after placing an order. If they decide to change the order, within the specified time, they can sign to that too. What I like least about this software is that when actually filling in the blanks, the words do not align with the original text. This is an area that needs improvement.
Tracey Ann H.
2022-07-09
I would like to express my satisfaction… I would like to express my satisfaction of the help that the guys from pdfFiller gave me with my problem with cancelling my subscription. They were very prompt and very efficient and were very user friendly. THANK YOU
Stephanie Hayden
2021-02-16
Daniel I was disappointed to find that PDF filler had automatically charged me for a subscription I did not agree to. I felt very stressed when I saw the sum of money that had left my account this morning. I contacted the helpline via the chat service they offer on their website and I spoke to daniel. He was extremely efficient in his help and immediately refunded my payment and canceled my subscription. I would like to leave a 5 star review for the customer service I received despite my initial disappointment in PDF filler.
PEOPLE find PEACE
2020-10-08

Password Protect PDF and Encrypt PDF for Server

Ensure your documents remain secure with our Password Protect PDF and Encrypt PDF for Server feature. This essential tool helps you shield sensitive information from unauthorized access, giving you peace of mind while managing your files.

Key Features

Set strong passwords for PDF files to limit access
Encrypt PDF files for secure data transmission
User-friendly interface for easy setup
Batch processing for multiple files at once
Comprehensive support for various PDF standards

Potential Use Cases and Benefits

Protect financial statements before sharing with clients
Secure employee contracts and sensitive HR documents
Prevent unauthorized access to confidential research files
Ensure compliance with data protection regulations
Safeguard personal information in legal documents

This feature effectively addresses your need for document security. By allowing you to enforce strict access restrictions, it protects your valuable information from misuse. You can confidently share your PDFs, knowing they are encrypted and password-protected. Gain control over who can view, print, or edit your documents, and reinforce your commitment to data security.

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 > Protect > Encrypt > Encrypt with Password. If you receive a prompt, click Yes to change the security. Select Require a Password to Open the Document, then type the password in the corresponding field.

How to Password Protect PDF and Encrypt PDF for Server - 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