Lock PDF and Merge 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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Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
Every PDF tool you need to get documents done paper-free

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.

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.

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.

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.

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.

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 love it. I will definitely renew when the time come. The Military offer me a free site for forms filler but I can never open it on my personal computer. I have to use it on the government issued computer.
2014-12-21
To start with I struggled a little bit and thought it wasn't working. However, five minutes into it I was already achieving what I wanted from the editing futures of this program. Many thanks.
2017-02-21
This has been a lifesaver!!! I have been able to download all the forms that I have needed and PDF filler has worked with every single one of them. I really cannot give it another praise!
2018-09-03
PDFiller
I love being able to use PDFfiller. It sure makes completing forms much easier and quicker than printing them and writing forms out.
Some forms are not able to be saved after filling them in. They save blank. I have to download the form and then save it to a file.
2019-04-25
Everything is working
I checked out their pdf software, it's truly great, I liked it and I was ready to buy a year subscription, but all these bad reviews on line about this company made me nervous. However I signed up and now I am pleased to work with it
2018-01-19
What do you like best?
pdfFiller has enabled us to go paperless thanks to its editing and pre-fill capacity. It also helps us in not printing the PDF file when soft files can be edited with pdfFiller.
What do you dislike?
A new signature template would be appreciated
What problems is the product solving and how is that benefiting you?
pdfFiller is mostly used for editing PDF documents, signing important contracts, emails, training PDF files, filling up Tax PDF files, employment agreement without having to print it.
2022-06-14
EFFICIENT AND PROFESSIONNAL
AMAZING SERVICE, i use their services for my wine list at work, works perfectly, and also customer service is great! i made a mistake on my subscription, Paul helped me from their alive chat straight away and refunded me within hours. highly recommended!
2021-12-18
What do you like best?
I love how easy it is to navigate. the User-functionality makes it very easy to use and know how to create new content.
What do you dislike?
I wish there was a more user friendly version in IOS or Android App Store.
Recommendations to others considering the product:
There is so much this Program can do. If you have the time, watch videos and contact the support team to ask questions about how to use this effectively.
What problems are you solving with the product? What benefits have you realized?
I have not had many problems because of how easy it is to use. I wish there were more payment options to choose from though.
2020-08-10
I signed up for the wrong subscription…
I signed up for the wrong subscription on PDFFILLER and my issue was corrected by customer service. The agents there are very good to work with.
2025-02-13
Lock PDF and Merge PDF Features for Internet Explorer
The Lock PDF and Merge PDF feature for Internet Explorer provides a simple and efficient way to manage your PDF files. You can secure your sensitive documents and combine multiple files into one with ease. This feature is designed to cater to your everyday needs when handling PDFs online.
Key Features
Lock PDFs with password protection to ensure privacy
Merge multiple PDF files into a single document
User-friendly interface compatible with Internet Explorer
Quick processing time for enhanced productivity
Support for various PDF file formats
Potential Use Cases and Benefits
Secure financial records before sharing
Combine project proposals for easy submission
Organize personal documents like bills and receipts
Prepare presentation materials in a single file
Simplify document management for businesses and individuals
By using the Lock PDF and Merge PDF features, you can solve common problems associated with PDF management. Whether you're worried about document security or need to combine files for a presentation, this feature provides the tools you need. You can protect sensitive information and streamline your document workflow effortlessly.
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
How do I combine PDF files in Windows 10 for free?
Step 1: Download PDF Shaper Free version.
Step 2: Launch PDF Shaper Free.
Step 3: Click Merge option to open Merge window of PDF Shaper.
Step 4: Here, click the Add button to add all the PDF files that you want to merge or combine into one PDF file.
How do I combine locked PDF files?
File→Create for creating a new PDF file.
Choose Combine Files Into a Single PDF option.
Click on Add File, add all the PDF files you want to merge.
Add password of the locked PDF files.
Click on Combine.
File→Saves to save the PDF file.
How do I password protect a PDF in Internet Explorer?
Open the PDF and choose Tools > Protect > Encrypt > Encrypt with Password.
How do I combine PDF files in Windows 10?
Open the app, and choose To merge or Split. If you just need to merge two documents without changing the order of any pages, choose To merge.
Click Add PDFs, and select however many you want to merge.
Once your documents are in order, hit Merge, and name and save the new merged PDF.
How to Lock PDF and Merge PDF for Internet Explorer - video instructions
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