Concatenate Document 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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Last updated on Aug 16, 2021

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:
Easy to use, and very useful, but some symbols are not explained. They have a very large number of forms, but some are not the latest version. Nevertheless, it is addictive and once you get used to PDFfiller you will always come back for more.
Mahmoud G
2015-07-08
PDFfiller for the win!! PDFfiller for the win!! Of course, I've enjoyed avoiding filling out forms by hand and being able to create & save legible documents I can duplicate and email. But tonight, PDFfiller LiveChat surprised me! They helped solve a document problem for my daughter's online university application. The application program wouldn't let her upload her SAT scores, or continue her application until they were loaded! The website kept saying the 2-page file was too big!? So I loaded it onto PDFfiller, and got a helpful LiveChat rep, who quickly compressed the file for me. Voila, it worked!! PDFfiller, you just saved the day!
Jennifer Kennedy
2020-01-14
It's been a nice use-friendly experience overall. I like the way pdf found elsewhere could be easily pulled into (uploaded) the program without a glitch. And I really that all my documents are saved into the same system even those docs complete a few years back. I was pleasantly surprised. I would like to continue learning more about all the features your platform is offering. Especially the signing and sending of docs to others. I sincerely sense these is going to be my 'go-to' platform for many of my pdf needs. I need to keep on top & keep up ;).
Patricia M
2023-03-16
pdfFiller.com gave me faith in online… pdfFiller.com gave me faith in online companies. I have no idea what I was trying to accomplish, but had signed up for a 30 day trial. I never used the program, just must have been sleep working. Anyhow, I was so surprised when I got the notification that I had just bought a year subscription. I was beating myself up and trying to figure out how I could be so unaware. I first tried to call. The phone was endlessly busy, I thought wow I just lost $122 (I paid in Canadian funds). Anyhow, I thought I may as well try sending an email. I could not believe it!!!! The response was almost immediate. Max, took care of everything. He issued a refund, and let me know he had cancelled any future subscription. I was in absolute shock. If I had a need for pdfFiller, in that moment, I would have signed up for years. THANK YOU for being accommodating and obviously trustworthy. Again, you have given me a bit of hope for humanity.
Rhonda Taylor
2022-02-01
I never leave reviews, but Elisa from the 'chat' help was so helpful that I am leaving a review!!! I usually avoid chat help on websites, but Im glad I stumbled upon Elisa. Truly helpful and very efficent. Just became a happy customer
roy k
2020-10-20
It is a great tool that anybody can use It is a great tool that anybody can use. It does not matter what type of business, school, or type of work you do you will get out of this service if you have to continually deal with PDF documents. Do you need to sign something? Check. Do you need to change a shipping label by a major retailer for a return? check. Tax documents? check. For real, I'm just a regular stay at home dad and I use this AT LEAST twice a month.
anonymous G.
2020-07-18
PDF Filler is a great website for me to… PDF Filler is a great website for me to use. It's simple and convenient since I don't need to fill everything by hand. The only issues I have are filling in the date because I'm required to manually select the day, month, and year. Another issue is the website automatically switching to the next page which is annoying because I want to check all the fill ins are correct. Lastly, the layout of the website is rather confusing because I had to spent a couple of minutes figuring out how to import documents and other stuff. That's why PDF Filler gets a 4 star rating because of these mild inconvenience.
B. S.
2020-06-08
Ryan on the Support Team was extremely helpful and patient. He walked me through all of the steps to complete the form to my satisfaction. Thank you Ryan for teaching me!
Elyssa
2020-05-21
Their customer service is great! Joyce helped me out and was super helpful and considerate! Best customer service experience I’ve had. Thanks for the quick response!
Sarah B.
2020-05-03

Instructions and Help about Concatenate Document For Free

Concatenate Document: edit PDF documents from anywhere

Document editing is a routine task for the people familiar to business paperwork. You can modify a Word or PDF file on the go, using different tools that allow editing documents. Since such apps take up space while reducing its battery life. There are lots of online document processing tools which work better on older devices and faster to work with.

Now you have the option to avoid all of these issues working with files online.

Using pdfFiller, editing documents online has never been much easier. This service supports not only PDFs but other common formats, i.e., Word, JPG and PNG images, PowerPoint and much more. With built-in document creation tool, create a fillable document on your own, or upload an existing one to modify. In fact, all you need to start editing is an internet-connected computer, tablet or smartphone, .

Try the multi-purpose online text editing tool for starting to modify documents. It features a selection of tools you can use to change your template's layout making it look professional. Furthermore, the pdfFiller editor allows you to edit pages, put fillable fields anywhere on a document, include images and visuals, modify text formatting, and much more.

Make a document on your own or upload an existing form using the next methods:

01
Upload a document from your device.
02
Open the Enter URL tab and insert the path to your file.
03
Search for the form you need in our catalog.
04
Upload a document from the cloud storage (Google Drive, Box, Dropbox, One Drive and others).
05
Browse the Legal library.

Once uploaded, all your templates are available from the Docs folder. pdfFiller export all the data to remote server, to provide you with extra level of security. It means they cannot be lost or accessed by anybody but yourself. Move all the paperwork online and save your time.

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
Launch Word and open the file that you want to merge into another file. ... Right-click anywhere in the highlighted area and choose Copy. ... Open the second Word file. ... Press Ctrl-Enter to add a new page with a page break for the copied document.
Launch Word and open the file that you want to merge into another file. ... Right-click anywhere in the highlighted area and choose Copy. ... Open the second Word file. ... Press Ctrl-Enter to add a new page with a page break for the copied document.
Right click in the Word document where you want to paste your text. On the menu under Paste Options, choose the third option, Keep Text Only. The icon is a clipboard with an A on it.
You can only combine two documents at a time. In the dialog, select your original document and one of the edited documents (and select the types of tracked changes and comments you want), and click OK. On the next pass, select the result of the first pass as the 'original document' and another edited document.
Merge PDF files online — it's easy and free* Upload your files: Use the choose file buttons above to upload your PDF files and then press the “merge” button to download your PDF. Select multiple PDF files in your desired order and click on more files to combine 5 files or more into one single document.
Drag as many PDF files as you'd like into our PDF Joiner. Use the tool preview to arrange the pages in your preferred order. Click Merge and let our tool work its magic. Click download to save your new document.
This utility merges multiple PDF files and split large PDF document by page or range. It is compatible with all types of PDF files and maintains the originality. There is no limitation on the number of files to be merged. All in all, it a secure and reliable tool which a user can use to merge PDF files or documents.

#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