Easily Merge and Unmerge PDF online For Free

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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
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Users Most Likely To Recommend - Summer 2025
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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:
some good some bad cause need to change size of pics as my constant contact only takes jpeg. can't use your address book as i don't use my mac mail use verizon so not friendly with this stuff makes it harder to use overall.
Phyllis Francene L
2016-12-29
love learning everything. Problem with sending multiple pages in one email to have signed. Problems with getting the signature from the recepient because the codes don't work consistently.
Anonymous Customer
2017-05-14
PDF filler great for all ages. PDF filler is an easy to use editor. I had no problem downloading the forms I needed to fill in to the program , fill my forms, click done and print (in color). And you get 1 month free trial. Thank you.
Lidia Cornelio
2019-06-09
Best prices This app save my tim. It is the cheapest option of all. Pdfiller is very suitable. It is good for filling, sending, signing. Good support and reliable system. Sometimes after the updates, it stops working as usual. Some time is needed for waiting for patches.
Olivia D.
2018-01-15
I am using it time to time for to fill the pdf. I got this because IRS fillable from will not let me I have used IRS form like 1099 and 1096 and other forms. Easy to move PDF and update. Also I can save filled PDF to my folder. I really like the filled and sign.
Shah K.
2017-11-14
pdf filler is exactly what I needed pdf filler is exactly what I needed! I no longer have to hand write every field, I can quickly and easily type the information. It helps make my document much neater and legible.
Ann Perez
2023-07-23
Good. I used to use Docusign but they ruined everything by not allowing direct access to an existing account within email. It would be good if you could do that btw - when you preview a document in gmail you should be in the dropdown list of options for opening the doc and editing it.
David C
2023-05-08
I wanted to merge multiple PDFs to… I wanted to merge multiple PDFs to make a unique Journal. but BOOK BOLT didn't have that feature, I was disappointed.. Then I was watching a YouTube video and it mentioned this PDF editor.. I have created my unique Journal and I am ready to sell it on Amazon... Thank you so much. This is a money making software. Hats off to you ALL!!! Peace, Power and Success. David Star is Zodicus Prime..
Jesse Martin
2021-09-09
What do you like best? Easy tools to edit and send email/fax is a breeze What do you dislike? Download forms from third party is not useful with provider business names. Recommendations to others considering the product: Good for business especially with email and fax service is free. What problems are you solving with the product? What benefits have you realized? Leases, company business editing.
User in Financial Services
2020-11-05

How to Merge and Unmerge PDF online

If your daily workflow contains editing or handling numerous PDF files, the range of your editor’s functionality determines your efficiency and capacity throughout the working day. If you are using the right software for your everyday jobs, to Merge and Unmerge PDF must be a fast and straightforward process. Try pdfFiller to access any document feature in seconds and focus on the value of your projects.

With this robust online editor, you can access your document history from any device and make all the changes you need anytime. The intelligible toolbar brings each functionality within a click, so you do not have to spend a lot of time onboarding or getting additional training. Create, edit, share, add fillable fields, and collaborate on your paperwork successfully.

Check how simple it is to Merge and Unmerge PDF with pdfFiller

01
Go to the pdfFiller website and log in to your account. If you are a new user, you may register a new account in a few clicks.
02
Go on to the Dashboard and transfer your file by clicking + Add new. Utilize the handiest method to add it: upload, find a template, link it from the storage, or just insert the URL.
03
Now you are set to Merge and Unmerge PDF.
04
As needed, introduce any other changes to your document utilizing the extensive toolbar: add content, place fillable fields, annotate, highlight, or insert media.
05
Invite other users to collaborate on the file in real time.
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Once done, click DONE to complete editing.
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Upload the document to your account or access it in your document history.

Merge and Unmerge PDF with pdfFiller and discover more advanced features to lift up your document processing experience. Work on your paperwork without obstacles on your way to better productivity, whether it is an individual task or a collaborative project. Start your free trial and try it today!

Easily Merge and Unmerge PDF Feature

Discover a seamless way to manage your PDF documents with the Easily Merge and Unmerge PDF feature. This tool simplifies the process of consolidating multiple files or separating them, making document handling a breeze for you.

Key Features

Quickly merge multiple PDFs into a single document
Effortlessly unmerge a combined PDF into individual files
User-friendly interface for smooth navigation
Compatible with various PDF formats
Secure and private processing of your documents

Potential Use Cases and Benefits

Combine client reports into one file for easy sharing
Split large PDF contracts into smaller sections for review
Organize school materials or research papers effectively
Create comprehensive presentations by merging multiple slides
Facilitate easier document submission by organizing required files

Whether you face the challenge of document clutter or need to prepare files for submission, this feature helps you overcome these hurdles. You can save time and effort while organizing your PDFs, allowing you to focus on more important tasks.

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!

Video guide about Merge And Unmerge PDF

#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