Ultimo aggiornamento il
Jan 16, 2026
PDF Application Protect Online Gratuito
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Discover the simplicity of processing PDFs online
Upload your document in seconds
Fill out, edit, or eSign your PDF hassle-free
Download, export, or share your edited file instantly
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
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:
Haven't been able to add a blank page to the 3 page form I was working. The instructional video indicated I should see a "Pages" icon on the Edit line. I didn't.
2014-09-27
Amazing software except for the licensing. I just want to pay for when I need it. For a business the month to month is great, but for a single time user it is a bit tougher.
2015-03-05
I'm learning it slowly. You cannot merge files in the app on ios. I need that. There are also a few hic-ups. Sometimes after a signature the screen gets disoriented and you have to go back to documents list and reopen. Sometimes after reopening some of the modifications are gone and you must re-enter. Some of these issues may be due to not being connected to internet. Overall it has helped me go paperless and I'm getting faster at filling out my documents using it. A few tweeks and it will be awesome.
2016-03-30
I've edited 4 documents with pdf filler which was fairly easy considering the editing I needed done was fairly simple. I'm a little disappointed that there is no on-demand training because I've only used some basic features & would like to learn alot more on all of the features that are available & how to use them
2017-07-13
Quick on the go use
This software allows for quick on the go use with only my cellphone.
No need to print, fill out, scan and email.
There are several applications I have not used with this software
2022-07-08
It is good but follwoing features may…
It is good but follwoing features may make it much better1. Paragraph eraser would be a great value - right now eraser keeps the gaps between top and below lines. 2. Mass repalcement would be good - search a word or sentence and can replace entire document with new word or text.
2021-09-12
Customer Service
Friendly customer service and support, thank you so much fo caring about needs of PDF consumers.
I can do whatever I want from a PDF software
Basically I liked everything about the software
2020-09-22
EXCELLENT customer support
I had a great experience with PDFfiller. Although I was not able to keep my subscription with them, their customer support was fantastic and their services are great.
2020-06-01
Because of distance learning, I am sending assignments...
Because of distance learning, I am sending assignments to my GED students, and then send back the answers for them to self-grade. This allows me to fill in the assignment and send it back effortlessly!
2020-05-17
Protect Your PDF Documents with Advanced Security Features
In today's digital world, the security of your documents is crucial. Our PDF Application Protect feature offers a robust solution to keep your sensitive information safe from unauthorized access and sharing. This feature puts you in control, ensuring that only authorized users can view, modify, or print your PDFs.
Key Features
Password protection to restrict access to your documents
Encryption to secure the content from unauthorized viewing
Watermarking to deter unauthorized distribution
Permissions management to control editing, printing, and copying
User-friendly interface for easy setup and management
Potential Use Cases and Benefits
Safeguard confidential client contracts and agreements
Protect intellectual property by securing design and development documents
Ensure compliance with industry regulations regarding data protection
Secure academic documents, such as research papers and theses
Manage sensitive financial data with appropriate access controls
By using the PDF Application Protect feature, you resolve the common issue of document security. You ensure that your important files are not exposed to risks, thus gaining peace of mind. It allows you to collaborate safely and confidently, knowing that your information remains secure. Protect what matters most to you and your business with our dependable solution.
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
How do you create a password-protected PDF?
First, open the PDF document and provide the password it requires. Click the Print button on the PDF toolbar while viewing the password-protected document. Click the Change button under Destination and select Save as PDF.
How do I unlock a PDF for editing?
Click CHOOSE FILE. It's a green button on the right side of the page.
Select your PDF file.
Click Open.
Enter the user password.
Click UNLOCK.
Click VIEW & DOWNLOAD IN BROWSER.
How do you encrypt a PDF file?
Choose Tools > Protect > More Options > Encrypt with Password.
Choose File > Protect Using Password, and then choose Advanced Password Protection from More Options.
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