Lock PDF and Edit PDF 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
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:
I need the valuable options to verify signatures and to easily file paperwork with government institutions. PDF is "Pretty Darn Fly." (Not professional, but true)
Holly G
2017-03-22
I really love this program - saves me SO much time because I can merge documents or remove pages, along with making changes and corrections. SO much better than rescanning documents!
Lori S
2017-06-22
For people who are not that good in technology like me (you are not to blame), it was a bit difficult to find a website where I could fill important documents to send via internet in a safe manner. After a while, I found your website and once I figured out how to save and send the documents I can say that it is a good website. My recommendation is to make it even easier to access and follow directions for seasoned people like me. Thanks
Alma
2018-05-03
What do you like best?
Ease of accessing documents, editing, uploading from pc, internet, and other sources. The ease of sending copies to clients or others via email. The safety of the process is great.
What do you dislike?
The proximity of the watermark feature is to close to the scroll bar.
Recommendations to others considering the product:
GET IT !! Use it with confidence and peace of mind
What problems are you solving with the product? What benefits have you realized?
I’ve resolved contracts, forms , Income tax forms, The benefits are the ease of use and access to documents.
Joseph Barracato
2020-02-18
Excellent PDF conversions This software helps me keep documents in unchangeable forms so that they can be sent out and not altered. I love that I do not have to download anything to my computer. I can go straight to the website, upload my document or file, and then have it converted into a PDF within seconds. It is super fast and the PDFs look great. I have used PDFfiller numerous times, and there is not one thing I can think of that I do not like about it.
Maria H.
2019-10-22
The Best PDF Field Configuration Sodftware By Far, the easiest tool and best option to modify PDF and define all Filling fields, however you want. i have no complaints at all, only my gratitude.
Will Angulo
2023-06-01
great you can do anything needs to be… great you can do anything needs to be done the best pdf editor you can find , but the price is and subscription is little too much
AMER
2022-01-11
I have used PDFfiller and it is a great time saver. By making any form to a can be filled. form online.. Its great to find a form that I need , but its not fillable, this fixs that... Their customer service is great, helped me the fist call..
STEPHEN S
2020-10-11
I filled out forms before purchasing app and thought it was saved. After I purchased the app I could not find my document. I texed with a customer service rep, he was no help and quit the communication.
Douglas T
2020-09-02

Lock PDF and Edit PDF for Internet Explorer

Enhance your productivity with the Lock PDF and Edit PDF features designed specifically for Internet Explorer. These tools enable you to manage your PDF files conveniently and securely, ensuring your documents remain private while allowing necessary edits.

Key Features

Secure your PDFs with password protection
Easily edit text and images within your PDF files
Merge multiple PDF documents into one
Split large PDFs into smaller, manageable files
Convert PDF files to other formats and vice versa

Potential Use Cases and Benefits

Protect sensitive information in contracts and agreements
Prepare professional presentations by editing existing PDFs
Simplify document sharing by merging multiple files
Tailor PDFs to different audiences with quick edits
Organize files by splitting bulky documents into sections

By using the Lock PDF and Edit PDF features, you can solve common problems related to PDF management. You gain control over your documents, keeping your information secure while also having the freedom to make necessary edits. Whether you need to protect sensitive data or update a presentation, these tools offer a simple solution right within your Internet Explorer browser.

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.
1. With the form fields added to the PDF, right-click on the Signature field you are wanting to edit and choose Properties. Then from the Signed tab, choose to Mark as read-only and select the fields you want to lock after signing. Finally, Close.
You first add a password to your document. You do this by bringing up document properties (Ctrl-D or Cmd-D), then go to the Security tab and select to add Password security. In the second step apply the extended reader rights via the menu item mentioned above (at this point, only Enable more tools will be available).

Video Review on How to Lock PDF and Edit PDF for Internet Explorer

#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