Lock PDF and Secure PDF File for Internet Explorer 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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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
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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:
At first, I was intimidated by all the different prompts and directions but after a short while I was able to figure things out. It was intuitive and easy. Also, with a little practice, I was able to line up the cursor to where I want the letters to show. For someone who is using this service for personal use (not business) the cost is slightly prohibitive. So I would probably only subscribe when I really need it and can't find a more reasonable alternative. I have been recommending this service to friends and family for sometime now. I am sold on it.Thank you.
Al Y
2015-09-02
With recent changes, it has become difficult to navigate in the application. Also the app is slow and hence takes too much time for us to work on it. Its a great app, but due to some changes made (may be) the end user is not happy.
Rajesh
2018-06-12
Hard to get used to, and probably a lot of features we are not taking advantage of for lack of know-how, but very reliable and handy. We mostly use it to send for signature.
Anonymous Customer
2019-01-30
What do you like best?
I love the ability to make chanced to docs Ive already completed... and even changes to docs other have completed and sent me. Great Program!
What do you dislike?
Ive been using this for a few years and I have not found anything to dislike!
What problems are you solving with the product? What benefits have you realized?
Save paper! Save Ink! PDFfiller is helping Save the World :-)
Ryan Meltcher
2020-02-03
PDFfiller is the only website where I can sign any document that needs to be signed without any hassle or hidden fee's it also helps me on creating certain documents that I need as well as sending documents that needs to be signed by my clientele.
Courtney B
2022-03-03
AND They '' LISTENED "...Before they OPENED thier Mouths! wow SUPER COOL! THANK YOU! super fast and responsive support team you guys are fast, curteous supportive and knowledgeable about your positions. my experience with your support team has been exceptional..they all were kind and courteous and fast with getting me back on. Thank You! in days that were are experienceing it is good to know that there are a few companies that still utilise our citisens exceptional skills in their business in the United States, that know english well, can do thier jobs over the phone and are "present" so to speak, and use English well. Your support team appear to be knowledgeable and savey of the product they are supporting and can help all of us out quickly and efieciently with any communitcation barriers and that means ((SO MUCH TO US). 10+++++++10+++++... .Thank You so Very Much!
Thank You!
2021-11-19
great product We use this on an annual basis to prepare our tax docs for our Church employees. Great service and they are always willing to help even when its a user error. thank you
Rebecca Garcia
2021-02-27
I've had a great experience using PDFfiller. This application has saved me an enormous amount of time and gas running back and forth to different agencies in town.
Clarence G
2021-01-30
PDF Filler Saver and Protector Great! Awesome software/product that is very helpful in the business environment. What I like most with the PDF filler is the ability to secure and password protect a very important document. I like sending documents or exchange with staff for faster and easier collaboration and this software helps us do that while making sure the personal information are protected. Nothing much as it serves the purpose that I am really looking for. I cannot think of anything that I don't like. I am satisfied.
Flor F.
2020-10-15

Lock PDF and Secure PDF File for Internet Explorer

Enhance your PDF security with our Lock PDF feature. This tool empowers you to restrict access to your sensitive files, ensuring that only authorized users can view or edit them.

Key Features

Password protection for PDF files
User access control settings
Easy integration with Internet Explorer
Quick locking and unlocking of documents
Compatible with various PDF formats

Potential Use Cases and Benefits

Protect confidential business documents
Safeguard personal information shared online
Comply with data protection regulations
Share important files securely via email
Prevent unauthorized editing or sharing

By using Lock PDF, you can solve the problem of unauthorized access to your documents. You gain control over who can view or edit your files, which minimizes the risk of data leaks. This tool not only secures your content but also builds trust with clients and colleagues, knowing their information is safe.

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
Click the Options button at the bottom of the save dialog window that appears. At the bottom of the options window, enable to Encrypt the document with a password option and click OK. Enter the password you want to encrypt the PDF file with and then click OK.
Open the PDF and choose Tools > Protect > Encrypt > Encrypt with Password.

How to Lock PDF and Secure PDF File for Internet Explorer - video instructions

#1 usability according to G2

Try the PDF solution that respects your time.
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