Unlock PDF and Merge PDF for Microsoft Gratis

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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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Laatst bijgewerkt op Jan 16, 2026

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Combine multiple PDFs into one.
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Rearrange pages in a PDF document.
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Compress PDFs to reduce their size.
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Convert PDFs into Word, Excel, JPG, or PPT files and vice versa.

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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+
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4.6/5
average user rating
4M
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9 min
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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:
Very good so far except that when I attempt to print completed documents the program changes the orientation of the doc so that it cannot be printed. I've managed a work around, but it's annoying.
Anonymous Customer
2015-05-24
Best filler ever! I love pdf filler. I can fill out important docs, keepbthem all in one place, fax them, save them, print them... This is a virtual office and a secretary. I love it!
Nizhoni
2019-10-14
What do you like best?
Ability to add notes to PDFs for my clients. It really does help answer questions for them much faster and help them understand the document better.
What do you dislike?
I wish I could merge and rearrange documents without it costing more to upgrade to do so. Would also be nice if If could set two password when securing a file. One for client and my master password
What problems are you solving with the product? What benefits have you realized?
Being able to mark up pdf documents for my clients that otherwise I could not. I like the pen option to call out important numbers for them to review. Being able to highlight where there signature is needed is an added plus
Consultant in Financial Services
2018-01-17
What do you like best?
I really like how I can fill out any form and it will turn it into a pdf. I also like how I can sign any form with my signature.
What do you dislike?
I do not really enjoy filling out forms that do not provide just a box to type in, rather it is little individual boxes for every letter. When the form is this way. I have to insert a new text box for every letter so that the letters would fall in their own little box and doesn't look out of place. These are the forms that are difficult to fill out. Unless there is a setting I haven't figured out yet.
What problems are you solving with the product? What benefits have you realized?
I am currently a law school student. There are a lot of forms I have had to fill out and PDFfiller makes this so much easier because I can just send them electronically to those who are alright with receiving them electronically.
User in Law Practice
2019-02-25
Awesome program - try it! You will see what I mean. Awesome program. I love it!After using this program for a bit I now realize it is more than awesome. This program has helped me with forms and signatures and has pretty much streamlined this part of my job. I really love it!!!!!
Louise Sauve
2019-02-14
PDFFiller: A Convenient and User-Friendly PDF Editing Solution I have been using PDFFiller for several months now and I am impressed with its functionality and ease of use. The software allows me to easily edit and sign PDF documents, saving me a lot of time and hassle. The interface is user-friendly and the features are comprehensive, making it easy to use for people of all skill levels. The mobile app is also very convenient and allows me to access and update my PDFs on the go. The software is very user-friendly and easy to navigate. It allows me to easily edit and sign PDF documents. The mobile app is also very convenient and allows me to access and update my PDFs on the go. I did not encounter any major cons while using the software, however, I would like to see more customization options for the templates.
Ivor B.
2023-01-16
Great app Great app - really easy to use. Doesn't change the quality of the document. Probably won't pay for it long term - I would pay £1 or something everytime i wanted to use it though...
Lucy Ryan
2021-07-10
Very good to be able to edit pdfs Very good to be able to edit pdfs, though it is still a fairly clunky procedure. But for a free download you can't complain.
Jeremy Brooks
2021-07-05
As an accountant As an accountant, even one who does not prepare taxes, this has turned out to be a life-saver for me with all the POA's and other forms that need to be filled out and signed. Thanks pdfFiller!
SWayland
2025-03-14

Unlock and Merge PDF for Microsoft

Are you tired of dealing with locked PDF files that hinder your workflow? Do you find yourself struggling to merge multiple PDFs into one cohesive document? Our Unlock and Merge PDF for Microsoft feature is here to solve your problems efficiently.

Key Features

Easily unlock password-protected PDFs
Merge multiple PDF files into one document
User-friendly interface allows for simple navigation
Secure processing of your documents
Supports large files without losing quality

Potential Use Cases and Benefits

Combine project documents for easy sharing
Unlock confidential files for editing or printing
Organize your reports and presentations seamlessly
Save time by merging files instead of sending multiple attachments
Streamline your document management process

By unlocking and merging your PDFs, you can enhance your productivity and focus on what truly matters. This feature addresses your needs for accessibility and organization, allowing you to access, edit, or share information effortlessly. Trust our solution to simplify your document handling today.

Get documents done
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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
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.
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 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.
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.
It isn't possible to merge PDF files from within the Office programs. However, the task is possible in some freeware PDF converters that install as virtual printers.
Click CHOOSE FILE. It's a green button on the right side of the page. Select your PDF file. In the window that opens, go to the location in which your PDF is stored, then click the PDF once to select it. Click Open. Enter the user password. Click UNLOCK. Click VIEW & DOWNLOAD IN BROWSER.

How to Unlock PDF and Merge PDF for Microsoft - video instructions

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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