Secure and Merge PDF 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 Dec 12, 2023

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:
Piece of cake; especially for those of us who don't have precious amounts of time to learn new software. I highly recommend it to business people like myself
Van C
2014-09-16
I like the improvements to the program & the variety of options. I would like to see the "circle" option with a little more flexibility - right now it is very thick & not practical. I also could not adjust the position of text boxes that were misaligned without deleting and recreating them.
Deseree Z
2014-10-14
I am a new user. It seems to provide all that I need to prepare my contracts. So far so good. But I am having a printing issue with my first contract.
Fequiere L
2017-08-12
I absolutely LOVE this program. However, I hate the pop-ups with the NEXT button. This isn't a feature that I need, and is very annoying. Please add an option to turn off this feature.
Anonymous Customer
2018-02-23
pdf Filler is a very useful option when… pdf Filler is a very useful option when you need other people's signatures, or want to modify documents with pre-filled information. Have used on/off for 15 years
Renee Winslow
2024-06-18
Great HELP Karen was great help to me. I was looking for a file for 2 years. With her help I was finally able to find it. She was patient and knowledgeable. Thank you Kara!!!!
Andrew
2021-07-16
This is exactly what I needed to be… This is exactly what I needed to be able to edit some documents from 1999 for which I could only obtain pdfs.
Anne Collyer
2021-04-17
I've tried their product once when I… I've tried their product once when I had to modify some PDF documents very quickly. I was very happy to find something really helpful and easy to use because the interface is userfriendly, everything is intuitive with an option to get back and redo what you need. I had to register, inclusive my card for one trial month in order to download my new edited docs.
tess_ md
2020-11-30
I really like the capability of downloading forms, completing them and signing to send off. I wish I did not have to log in each time. That would be a great plus as I work for several clients and need the quick ability to do a form and send to them. Thank you Alice
Alice M H
2020-09-29

Easy Secure and Merge PDF and more, using pdfFiller

In case you're sick of utilizing single-function programs where you are only capable of complete a single manipulation at a time, we know how you feel. Hours are wasted switching back and forth among numerous options. Use pdfFiller to get things done faster and speed up these processes.

pdfFiller is a certified, web-based PDF editor that actually works from the cloud. In order to Secure and Merge PDF, just open a browser, sign in to your account, choose a template, and Secure and Merge PDF in minutes. With our service, the process of editing files in PDF is fast and simple, smooth actually. An advanced set of tools lets you do what you need and much more. Here are the most helpful features you may use with your documents on pdfFiller:

01
Templates. Generate reusable forms and fill them out as many times as you want
02
Electronic signatures. Certify agreements and contracts straight from your device
03
Fill out fields. Embed them to enable recipients to provide information
04
Watermarks. Place your logo or name on the document's pages to prevent plagiarism
05
Extensive export. Send a file by fax or email, transfer it to the cloud storage, or download in one of the available formats: PDF, DOCX, XLSX, PPTX, and JPG
06
Layout management. Rotate, add, or delete form pages to accomplish your goals

pdfFiller is not only convenient for Secure and Merge PDF but keeps the data safe. pdfFiller operates according to the EU and US data protection standards. Thanks to the two-factor authentication, you don't need to go another day with your data exposed to unauthorized third parties.

Value your time and get started with pdfFiller for an efficient approach to document management.

Secure and Merge PDF Feature

The Secure and Merge PDF feature provides an efficient way to combine multiple PDF files into one secure document. This tool is perfect for users who need to manage PDF files effectively, whether for personal use or professional purposes.

Key Features

Merge multiple PDF files into one seamless document
Implement password protection to secure sensitive content
Ensure high-quality and lossless merging
User-friendly interface for easy navigation
Compatible with various operating systems

Potential Use Cases and Benefits

Combine reports, presentations, or e-books into a single file for presentations
Secure client documents before sharing via email
Simplify document management by reducing file clutter
Create personalized PDFs, such as portfolios or resumes
Enhance data privacy for sensitive information

This feature effectively solves your document challenges. By merging files, you reduce the hassle of managing multiple documents. The added security measures ensure that your information stays private. Whether you are a student, business professional, or anyone needing to organize PDFs, this feature meets your needs with ease.

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!

How to Use the Secure and Merge PDF Feature in pdfFiller

The Secure and Merge PDF feature in pdfFiller allows you to combine multiple PDF files into one and add security measures to protect your documents. Follow these steps to use this feature:

01
Log in to your pdfFiller account. If you don't have an account, sign up for a free trial.
02
Once logged in, click on the 'Secure and Merge PDF' option in the main menu.
03
Click on the 'Upload' button to select the PDF files you want to merge. You can select multiple files by holding down the Ctrl key (or Command key on Mac) while clicking on the files.
04
Arrange the order of the files by dragging and dropping them in the desired sequence.
05
(Optional) If you want to add security measures to the merged PDF, click on the 'Security' tab. Here, you can set a password to restrict access, enable encryption, and apply watermarks or digital signatures.
06
Once you have uploaded the files and set the security options (if desired), click on the 'Merge' button.
07
Wait for the merging process to complete. This may take a few moments depending on the size and number of files being merged.
08
After the merging process is finished, you can download the merged PDF file to your computer or save it directly to your pdfFiller account.
09
If you need to make any further edits or modifications to the merged PDF, you can use the various editing tools available in pdfFiller.

By following these simple steps, you can easily merge multiple PDF files and add security measures to protect your documents using the Secure and Merge PDF feature in pdfFiller. Enjoy the convenience and peace of mind that this feature provides!

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
All merged files maintain the best quality which can be accepted on any web platform (when uploading to a website or attaching as email). Your files are fully secure as they are been transferred over a secure connection. All files are deleted permanently from our servers within one hour of the conversion.
Ice cream PDF Split and Merge is 100% safe. It's a legitimate piece of software that does what it says: cut and combine PDF documents. It doesn't contain malware, nor does it make any modifications to the original PDFs.
Software Informer gives Stools PDF Split & Merge Software 100% secure & clean award for its best performance to combine and split PDF files.
Drag and drop your PDFs into the PDF combiner. Rearrange individual pages or entire files in the desired order. Add more files, rotate or delete files, if needed. Click 'Merge PDF!' to combine and download your 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