Secure PDF File and Merge PDF for Mobile Gratis
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Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
Every PDF tool you need to get documents done paper-free
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.
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.
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
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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:
This has been very helpful. My only problem is a tried to sign up for a monthly membership and I ended up getting charged and receiving a year membership. That part is a bit confusing.
2016-11-01
With recent changes, it has become difficult to navigate in the application. Also the app is slow and hence takes too much time for us to work on it. Its a great app, but due to some changes made (may be) the end user is not happy.
2018-06-12
After using many other PDF editors finally a user-friendly, is fast, does not freeze and gives me any problems login in or crashing after I purchased.
2018-07-13
I was looking for an app that will convert a sensitive file that has security feature that only the user or the owner of the file will only see it after it was being edited.
2018-11-19
Just what I have been looking for
Just what I have been looking for. Very easy to operate once you get the swing of it. Typing over erasures may be a bit tricky, but you have to insert text in a blank space and then you will be abe to move your text over the erasure without any difficulty.
2021-09-29
Quick and easy refund
I had excellent customer service after I was charged a monthly fee by error. The service response to my initial email was very quick; 3 easy, practical solutions were offered and following my choice my refund was processed very quickly.Very grateful.John
2021-06-12
Pleasant and professional customer service. ****** product which is under continuous development. Responsive to customer feedback. Highly recommended.
2021-01-12
User Friendly
So far, it's been great. Seems very user friendly, I had one issue where I couldn't find the Sign Now button (that could be made more visible or made as the default), I emailed Support and they responded very quickly, which I really appreciated.
2020-10-15
Saves time and creates options
pdffiller gives me the flexibility to work with PDFs in a manner that saves time and allows customization of prior files without recreating them.
2025-04-29
Secure PDF File and Merge PDF for Mobile
Introducing our Secure PDF File and Merge PDF feature for mobile, designed to simplify your document management tasks. This tool allows you to keep your files safe while seamlessly merging multiple PDFs into one convenient document. Use it to enhance your productivity, whether at work, school, or home.
Key Features
Encrypt PDFs to ensure data security
Merge multiple PDF files into a single document
Simple and intuitive mobile interface
Share secured PDFs directly from the app
Support for various file formats during merging
Potential Use Cases and Benefits
Combine reports, presentations, or agreements into one PDF for easy sharing
Protect sensitive information in contracts and paperwork
Organize your documents for academic or professional use
Maintain confidentiality while sharing files with clients or colleagues
Save time by quickly merging and securing documents on the go
This feature solves your problems by providing a reliable way to manage your PDF files. Are you worried about the security of your documents? Our encryption ensures that only authorized users can access your files. Need to organize your documents quickly? The merging function streamlines the process, giving you a single, manageable file. Let us help you take control of your PDF files efficiently and securely.
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
Are online PDF editors secure?
Advantages of both types of PDF editors Desktop PDF editors tend to be much more powerful because they leverage the capabilities of operating systems. They also tend to be more secure. Finally, they are internet-independent. Provided you install the software on one or more devices, you can edit PDFs offline.
How do I combine PDF files on my phone?
Select a file in the PDF Viewer file browser by long pressing on the cover image of the PDF. This will start the multi-file selection mode.
Select additional files for merging by tapping them.
Once you're done selecting files, press the merge icon in the multi-file selection bar at the bottom.
How do you combine PDF files on Android?
Select a file in the PDF Viewer file browser by long pressing on the cover image of the PDF. This will start the multi-file selection mode.
Select additional files for merging by tapping them.
Once you're done selecting files, press the merge icon in the multi-file selection bar at the bottom.
Is it safe to merge PDFs online?
Select or drag your files, then click the merge button to download your document into one PDF file. 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.
Is online PDF Merge safe?
Select or drag your files, then click the merge button to download your document into one PDF file. 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.
How do you combine PDF files on iPhone?
Run the PDF editor app on iPhone. Tap on the Edit icon in the top right corner of the PDF editor app on iPhone, then select the PDF files you want to combine, finally tap the Merge button at the screen bottom to merge the selected PDF files together into one PDF file on your iOS device.
How to Secure PDF File and Merge PDF for Mobile - video instructions
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