Last updated on
Jan 16, 2026
Merge large PDF files 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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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.
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What our customers say about pdfFiller
See for yourself by reading reviews on the most popular resources:
The best service ever! As a chiropractor, I am able to fill out my exam and soap notes with pdffiller then save them in the encrypted files for Hipaa compliance. My office is on its way to paperless as we speak. I love this service. Highly recommend it to all.
2014-10-17
Useful form creation and library tools
Makes confirming client changes and work ideas more fluid with notifications of form signing. Wide tool set and excellent selection of preexisting forms.
So many forms and flexibility to edit and create and cross share forms with clients, and the addition of the iOS app makes for a great always on solution and current information.
Price is ok, for single users but for larger firms it may be a consideration. So far no other issues
2018-12-12
A very useful tool for paperless office work.
It helps me to save paper and electricity by not using physical papers for my office documents. I do most of my office work online only with the help of this software.
It allows me to get e-signatures on my office documents. Being a cloud based program it allows me do all my pdf related work online only.
I don't find auto save feature in this application. I had to lose my unsaved work many time when I closed my system accidentally.
2018-11-30
VA Documentation and Form filling.
I had some VA documents and forms i needed to type out and no way to fill them in online. pdfFiller to the rescue! I was able to easily fill out the required information and to have them submitted. I may be helping as a Veteran Services Officer here in Panama, and this will come in handy as I help veterans get their submissions in that is readable and neat. Thank you pdfFiller for your great product!
2024-08-21
This program really provides me the opportunity to create the forms and fillable documents that can help speed up my report filling.
I enjoy the different ways to sign and initial different documents that otherwise could not be sent back electronically without several steps. I also have created templates and forms for consistent reports and forms I will be using to help speed up my entries. Thank you I do enjoy the program But I only know a little about it. I wish there was a little more user friendly tutorials.
2023-06-01
Amazing software!
Amazing software!
I was trying to process W-2's through another accounting program and it was a nightmare.
My boss told me about pdfFiller and I love it!!
2022-01-28
Great program
Great program. Let's you edit PDF, sign documents, send documents to clients or other persons to sign electronically. Also gives access (at least my package) to some limited legal forms which is helpful. Would highly recommend.
2021-02-02
Dee is really helping and supportive…
Dee is really helping and supportive and very polite to me in solving my problem. He stayed with me until my problem got resolved. Thank you Dee thank you pdf filler team
2020-12-14
The application PDFfiller is excellent…
The application PDFfiller is excellent tool, I found the app very user friendly and their customer support is outstanding. I would highly recommend PDFfiller for anyone looking for a PDF editing tool at a very reasonable price point. Also, the app can be used virtually without limits as PDFfiller is a browser based solution, so as long as you have access to the internet you are good to go.
2020-06-29
Merge Large PDF Files Feature
Our Merge Large PDF Files feature allows you to combine multiple PDF documents into one cohesive file. Whether you manage reports, presentations, or invoices, this tool simplifies the process significantly.
Key Features
Combine up to 50 PDF files in a single action
Drag and drop interface for easy file management
Maintain original formatting across all merged documents
Fast and secure processing with no file size limits
Cross-platform compatibility for use on any device
Potential Use Cases and Benefits
Organize project documents into one file for easier sharing
Create comprehensive reports from multiple sources
Simplify document submission processes for clients
Reduce email clutter by sending a single PDF instead of many
Improve collaboration by consolidating feedback and revisions
By using our Merge Large PDF Files feature, you eliminate the hassle of managing several documents. Instead of searching through multiple files, you can work with one document that contains everything you need. This solution saves you time, decreases the potential for errors, and enhances your workflow.
How to Merge Large PDF Files with pdfFiller
Merging large PDF files can be a breeze with pdfFiller's Merge feature. Follow these simple steps to combine multiple PDF files into one:
01
Log in to your pdfFiller account. If you don't have an account yet, you can easily create one for free.
02
Once you're logged in, click on the 'Merge' tab at the top of the page.
03
Click on the 'Add Files' button to select the PDF files you want to merge. You can choose multiple files by holding down the Ctrl key (or Command key on Mac) while selecting them.
04
Arrange the order of the files by dragging and dropping them into the desired sequence. You can also remove any unwanted files by clicking on the 'X' button next to their names.
05
If needed, you can click on the 'Settings' button to adjust the settings for the merged PDF file. Here, you can choose the orientation, page size, and margins.
06
Once you're satisfied with the file order and settings, click on the 'Merge' button to start the merging process.
07
Wait for the merging process to complete. This may take a few moments depending on the size of the PDF files.
08
After the merging is done, you can download the merged PDF file to your computer or save it directly to your pdfFiller account.
09
Congratulations! You have successfully merged large PDF files using pdfFiller's Merge feature.
With pdfFiller, merging large PDF files has never been easier. Start combining your PDFs today and streamline your document management process!
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