Lock PDF and Merge PDF for Computer For Free

Drop document here to upload
Select from device
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.
0
Forms filled
0
Forms signed
0
Forms sent
Last updated on Dec 12, 2023

Discover the simplicity of processing PDFs online

Card illustration
Upload your document in seconds
Card illustration
Fill out, edit, or eSign your PDF hassle-free
Card illustration
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

Card illustration

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.
Card illustration

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.
Card illustration

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.
Card illustration

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.
Card illustration

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.
Card illustration

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:
This is an excellent tool to use to complete paperwork to save and email or fax back on the fly. You can print afterward, or as soon as you complete your paperwork. Saves so much time, and paper, as you don't have to print.complete.scan and then send.
CheryD
2016-06-07
Easy to use no time at all to adjust to figuring out the layout and process of using the system and the trial is great to see if you are applicable with using it highly recommended.
Anonymous Customer
2019-06-04
When going from preview back to editable view all imputed info disappeared. Not sure why that happened but I selected cancel and all info reappeared.
Sue L
2020-02-25
My name is Jonathan from Africa My name is Jonathan from Africa, I needed a form via PDFfiller but was unable to use the service and was billed while on 30 days trial. That got me upset but after contacting Shennon online support, I was assisted, and in less than 10 minutes, it was resolved. Shennon exceeded my expectation. Satisfied. Therefore I commend Shennon for a great and wow customer service. Because of this singular act, I will recommend your company to friends.Thank you
Jonathan Amodu
2019-04-16
Very useful to fill PDF and Edit them On the Go. PDF Filling and operations just got easier. PDFfiller is a good software for regular usage as well. 1. Beautiful UI and Editing features. 2. The export feature is very useful and Smart. PDF to Word Export is just a Jiff. I faced a few issues with Multi Format and Locked PDF but worked like a charm in Premium Version. Thanks
Ravi T.
2018-08-08
needed a PDF filler software easy to use easy to fill out lots of PDF forms without hassle Easy to use. Can save forms for future use. Does not require any extra learning. Intuitive format makes easy for anyone to use. Cost was a bit much, but decided the year membership was the best savings deal. Have used it multiple times already in the first few months so I am glad I did not do a month to month membership.
Charlene B.
2017-11-14
I finally got it to work however when I… I finally got it to work however when I had it opened on a different browser I couldn't get it to do some stuff I was trying to get it to do and why do I have to pay more for faxing?
GuestBig Bruce
2021-05-14
I love Pdf Filler. I have tried ten different products similar to Pdf Filler and none of them had the features, functionality, utility, intuitive interface, and price point. I tried ADOBE and absolutely hated every moment. I cannot tell you how happy I am with your product!!! We have streamlined our HR onboarding process and our clinician credentialing process. Thank you!
Danielle E
2021-05-12
Became a notary and I love it! Very easy to use! Has all the tools necessary to get the job done. Not just for notary, even can be used for personal use as well. Amazing!
Vianey V
2021-02-09

Lock PDF and Merge PDF for Computer

The Lock PDF and Merge PDF feature for computer offers a comprehensive solution for managing your PDF files. With this feature, you can secure your documents and combine multiple PDFs into a single file effortlessly. It serves as an essential tool for anyone dealing with sensitive information or needing to streamline their documents.

Key Features

Secure PDFs with password protection
Merge multiple PDFs into one file
User-friendly interface for easy navigation
Options to customize your document settings
Compatibility with various operating systems

Potential Use Cases and Benefits

Protect confidential files for business meetings
Combine project reports into a single document for easy sharing
Organize personal documents, such as receipts and invoices
Ensure compliance with data protection regulations
Simplify document management for academics and researchers

This feature resolves several common issues. First, it keeps your sensitive documents safe from unauthorized access, providing peace of mind. Second, by merging PDFs, you streamline file management, making it easier to find and distribute information. Whether you need to secure a contract or compile a report, this feature delivers an effective and simple solution.

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 File > Print to open the print dialog. Click the PDF menu button at the bottom of the print dialog and select Save as PDF. Enter a file name and location for your new PDF file when prompted. The new PDF file will have the same contents as the original, but no password.
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.
Open your PDF. Go to Protect Tab. Click Password. Enter Password. Select the Printing allowed dropdown. Select None means to prevent printing. Select the Changes Allowed dropdown. Select None -means the highest level of protection.
Drag and drop your document in the PDF Password Remover. Confirm that you have the right to the file and click 'Unlock PDF!'. The decryption process should start right away. Modify your PDF further, or click 'Download File' to save the unlocked PDF.
Open the Secured PDF. Download and install the Google Chrome browser on your computer and launch it. Print the Secured PDF. Choose the “Print” option in the top-right corner of this Chrome browser. Save as a Normal PDF. Click the “Save” button to save it as a PDF.

How to Lock PDF and Merge PDF for Computer - 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