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:
Anne in customer support was outstanding, she was patient, calm, informative and extremely helpful. I had lost work that I had spent hours on and couldnt find what I had done wrong, Anne patiently worked through it with me and I found the document, without her I would have cried, literally, as I had worked the whole of the night on the document and it looked like i had lost it all. Anne should be commended for her high level customer service. She is a definate asset to your organisation.
Eileen L
2014-12-09
in a nutshell: sooooooooooo much better than adobe acrobat. i'm a new user, but this was just infinitely less frustrating (and i'm hoping less expensive) that dealing with adobe.
Julieann P
2018-11-01
What do you like best?
How easy I can manage PDF documents (fill, convert to an Office document, and signatures). I'm very glad!!
What do you dislike?
Nothing, it's easy to use and fast. I recommend this tool to anybody.
What problems are you solving with the product? What benefits have you realized?
I work in a Legal Department and we review a lot of contracts on a daily basis. Most of the documents came in on PDF format, so using PDF filler to convert the file to an MS Office is easy.
Maria de los A Martinez-Rivera
2019-02-25
I think that it's a great thing. It makes fighting a case much easier. That more people don't use it. There is nothing else that I like least about it. My vice president used it also an has no problems with it. Being able to find what your looking for, then being able to fill form in an save it, then come back to it.
Greg M.
2017-11-14
I love the PDF Filler. The only thing I don't like is the fact that when editing the font changes from the original font on the form that I am trying to edit.
kareem d
2022-05-30
USCG application form, cancellation. I used pdfFiller to downloand an complete an application. It was seamless, and worked as expected. More importantly, I realized I had little use for this app on a longterm basis.I cancelled (incompletely, it turns out) my trial subscription online.A month later I received notice that my 1 year subscription had been processed.Fortunately two of the technicians came to my assistance, on a Sunday, no less.They cancelled my subscription and confirmed the action with me.I was very impressed with their response, and commend the company for which they work!
Peter Areson
2021-10-04
They have excellent customer service. recommend highly. My profiles to their were thwarted due to hacked email on my end. Unlike any other online website subscription. ******* has many options and very easy to utilize. ***** ***, ****!
Holly M
2021-03-05
What do you like best? Very easy to use, very friendly, many options What do you dislike? That doesn't give you the option to save a file to a different folder in your computer What problems are you solving with the product? What benefits have you realized? Re-entering information or missing information, adding signatures
Administrator in Health, Wellness and Fitness
2021-02-16
They have been very prompt in getting back to me with any problems and questions. Sometimes, it takes two or more days, but eventually, they get back to me.
Timothy J
2024-12-29

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