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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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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

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:
I used it now for 2 forms. I like that It does everything for me..saves the document, converts to another format if I need it and easy to email out or print.
Noel
2017-03-01
I like that I can erase parts and add text of size and font that I like and move it around so it's where I want it. When I erase part it doesn't cause the rest of the document to move around. It stays put. That is essential when I am editing a document with a puzzle at the bottom.
Joan Y. E
2020-04-10
What do you like best?
We love how easy this system is to use for all of our real estate transaction documents. Very easy to navigate on a PC / MAC on a great app for your phone! When on the go we find it very easy to upload a contract document to make changes or to obtain a signature. I also use the program to edit any items for personal use as well. I find using the system helps me integrate school documents for my children. It is a great addition to anyone who owns a business and is looking for a nice way to conduct business at home or on the go! I highly recommend the app to anyone and find it very helpful. Definitely put the app on your mobile device! It work fantastic!
What do you dislike?
Nothing at all. We find the system very easy to use!
Recommendations to others considering the product:
No recommendations at this time. I find the product to work very well!
What problems are you solving with the product? What benefits have you realized?
Quick fill in for blank real estate documents like disclosures, amendments, and other items.
Roger W. Webb
2019-01-28
It has worked great for me It has worked great for me! Very user friendly, never had any issues with it since I purchased it over a year ago. I would very much recommend it
Gary Thandi
2019-11-24
What do you like best? The ability to edit almost any part of a pdf has saved me on countless hours of retyping a document for one minor change. The interface is very easy as well What do you dislike? The only improvement I would like to see is the ability to remove sections (cut) and move others into the opening. I may be a novice and this ability does exist, but if it does not, I personally would find it beneficial What problems are you solving with the product? What benefits have you realized? I am able to correct sentances, paragraphs or simply small typos. The ability to adjust those without redoing an entire document is an amazing benefit.
Administrator in Consumer Services
2021-02-12
I just started using it, I would be interested in a webinar to learn more about the features. I spoke with Jason who helped me tremendously. I appreciated the time via our chat and he provided screen shots that helped as well.
debbie g
2021-02-03
Ralph - My favorite support friend I requested a refund for a yearly subscription that I did not remember signing up for. I reached out once before and did not receive a response. I reached out again today (2020-10-24) and Ralph responded right away. He was extremely helpful and nice and solved my problem right away. I am extremely satisfied with my experience and I will definitely keep PDF Filler in mind if I or my friends need a safe place to store or edit documents. Thank you for your great support and for hiring a great employee like Ralph! He is amazing and I truly appreciate him.
Mariyam Hassan
2020-10-25
PDF Filler-Sign, Send and Relax As a user of PDF Filler, I have found I can do so much and I try to when put to the challenge. I have many ways to adjust files and docs to my needs or the needs of my Agency or Management. My fault lies in my own lack of knowledge sometimes or my being scared to try to edit or sign something. Yet I can do so much more than I actually have to it amazes me. It is nice when I have to work on the go and don't have a lot of traditional options as i would use before-print, fill, sign,fax-etc. Stuff like that. I get great simplified organization here and it is right on point.I will keep growing and using this over time. It is the only way to play for me with needing to sign documents while on the go or out of my home area. Today with covid-19 shutdowns, I am at the mercy of technology more than ever.And I am not the tech type guy. I have to try, fail, try again and learn if all is well. Sometimes, I will get a document on my mobile that says sign and send back right away. I get confused on my Google options, other things I use and I have 2 phones and can easily get lost on both. PDF Filler works so easily and involves virtually nothing. I still get lost at times or can't get what I am aiming for on one of my personal devices. That is my error. The interface and expansions and lack for separate software actually are great here. Least liked features or issues are at my own fault here. It is pretty solid.
JEFF K.
2020-06-09
I find pdfFiller to work amazing for me… I find pdfFiller to work amazing for me through covid-19. It is the ultimate online experience and help for online to-do's :) Genuinely and honestly, everything in one place, quick and tidy and professional. Thank you
Amber D. Jordan
2020-04-17

Try out the best online editing tool to Password Protect and Lock PDF easily

In case you're sick of utilizing single-function platforms where you are only capable of complete a single manipulation, we know how you feel. Though those are quite common features which most programs provide separately, not many of them offer the full compatibility to do both together. Try out pdfFiller to get things done quicker and automate these processes.

pdfFiller is a certified, online PDF editing tool that works from the cloud. Just open a web browser, sign in to your account, pick a document template, and Password Protect and Lock PDF very fast. Done online, the process of editing files in Portable Document Format is user-friendly, smooth actually. An advanced set of features enables you to do what you need and even more. Here are some helpful features available in our solution:

01
Templates. Create reusable documents and fill them out as many times as you want
02
Electronic signatures. Certify any document right from your device
03
Fillable fields. Embed them to let users to enter the data
04
Watermarks. Place your logo or business name on the document's pages to protect yourself from plagiarism
05
Smart export. Send a file out by fax or email, transfer it to the cloud, or download as one of the available formats: PDF, DOCX, XLSX, PPTX, and JPG
06
Layout management. Rotate, add, or delete pages to collect more details

pdfFiller is not only suitable for Password Protect and Lock PDF but keeps the information protected. Your information is stored and transferred strictly following the General Data Protection Regulation standards. pdfFiller sets a secure connection once you log in to account and keep information in an encrypted form so that the risk of not authorized access to your profile and included data is almost impossible.

Value your time and get started with pdfFiller for a more streamlined approach to your document management.

Password Protect and Lock PDF Feature

Keep your sensitive information safe with our Password Protect and Lock PDF feature. This tool ensures that only authorized users can access your important documents. You can share files confidently, knowing they are secure.

Key Features

Easy password setup to restrict access
Multiple encryption levels for added security
User-friendly interface for quick locking of PDFs
Customizable permissions for viewing, printing, and editing

Potential Use Cases and Benefits

Protect confidential business documents and contracts
Safeguard personal files, such as tax documents and medical records
Share sensitive information with clients securely
Prevent unauthorized access to intellectual property or creative work

By using the Password Protect and Lock PDF feature, you address the growing need for document security in today's digital world. You can confidently share your files, knowing they are safe from prying eyes. This feature empowers you to maintain control over your documents, protecting both your privacy and your business integrity.

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!

How to Use the Password Protect and Lock PDF Feature

Protecting your PDF files with a password is an essential step to ensure the security and confidentiality of your documents. With pdfFiller's Password Protect and Lock PDF feature, you can easily add a password to your PDF files and prevent unauthorized access. Follow these simple steps to use this feature:

01
Log in to your pdfFiller account. If you don't have an account, you can sign up for free.
02
Upload the PDF file you want to password protect. You can either drag and drop the file into the pdfFiller interface or click on the 'Upload' button to select the file from your computer.
03
Once the file is uploaded, click on the 'Protect' tab located at the top of the page.
04
In the 'Protect' tab, click on the 'Password Protect' option.
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A dialog box will appear where you can enter the desired password for your PDF file. Make sure to choose a strong password that is not easily guessable.
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After entering the password, click on the 'Apply' button to password protect your PDF file.
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You can also choose to set additional permissions for your PDF file, such as allowing or disallowing printing, copying, and editing. Simply toggle the switches according to your preferences.
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Once you have set the password and permissions, click on the 'Save' button to save the changes to your PDF file.
09
Your PDF file is now password protected and locked. To access the file, you or anyone else will need to enter the correct password.
10
To remove the password protection from your PDF file, simply follow the same steps and click on the 'Remove Protection' option instead of 'Password Protect'.

By following these steps, you can easily password protect and lock your PDF files using pdfFiller's convenient feature. Keep your sensitive information secure and enjoy peace of mind knowing that your documents are protected.

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.
Click the Select a file button above, or drag and drop a PDF into the drop zone. Enter a password, then retype it to confirm the password. Click Set password. Sign in to download or share your protected PDF.

Password Protect and Lock PDF Video Review

#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