Your browser is more powerful than you think: Secure PDF in Mozilla Firefox Gratis
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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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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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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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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:
jE TROUVE CA TRÈS BIEN , WOW J'ADORE.....nous pouvons faire beaucoup de chose avec le PDFfiller , il est très utile et je crois que tous les gens ayant des dossiers à mettre à jours devrait avoir le PDF filler ....Je le recommande fortement
2017-09-01
I really liked the entire PDF Filler platform! The content was laid out clearly and it was really easy to get started (even when I was frazzled about other things). Working with the platform in seamless and I have already recommended it to my mom who uses PDFs in her company 24/7
2019-02-26
What do you like best?
I use PDFiller constantly. In some ways, better than Acrobat,
What do you dislike?
Price of a subscription. (Being forced to write 40 characters or more is absurd.) Also, the survey is too long and time consuming.
Recommendations to others considering the product:
Would be helpful if png's were accepted and converted to pdf's.
What problems are you solving with the product? What benefits have you realized?
Had one problem a long time ago, which was quickly resolved by a PDFiller staffer.
I use PDFiller constantly. In some ways, better than Acrobat,
What do you dislike?
Price of a subscription. (Being forced to write 40 characters or more is absurd.) Also, the survey is too long and time consuming.
Recommendations to others considering the product:
Would be helpful if png's were accepted and converted to pdf's.
What problems are you solving with the product? What benefits have you realized?
Had one problem a long time ago, which was quickly resolved by a PDFiller staffer.
2019-05-21
What do you like best?
Good web based program for filling sending PDF files
What do you dislike?
Still requires a flash extension so browsers llike Chrome no longer supported
What problems are you solving with the product? What benefits have you realized?
Quickly fill in pdf docs and email them. Can also request signatures for documents and fill them.
Good web based program for filling sending PDF files
What do you dislike?
Still requires a flash extension so browsers llike Chrome no longer supported
What problems are you solving with the product? What benefits have you realized?
Quickly fill in pdf docs and email them. Can also request signatures for documents and fill them.
2020-02-05
Valuable service four our business
Great for completing and revising forms
Allows easy efficient revisions to forms that are not otherwise "fill-in" online forms
website can be slow and clunky at times, technical support is only available through on-line chat, no teleconference service
2019-01-29
Time saving, great price, invaluable tool
It makes billing time saving and easy
Ease of uploading needed documents
Ability not to have yo repeat type for claims
Verifiable signatures and dates
Saving .can be a bit confusing at first
Too many tabs can be confusing
Not always user friendly
Not for a new computer user
2017-11-14
I needed Pump Data sheet for my…
I needed Pump Data sheet for my customers to fill up and been wracking my brain where to get it , and PDFFiller have it ....Great one headache gone
2023-05-05
Support is good but last release is bad
I am really fond of their support team. They are very friendly and provide all help the can. But that's not enough for good product. Support can't fix bugs or make it good for tablets. Try harder.
2021-01-19
I was very impressed with this web-based PDF editor
Overall my experience has pretty very positive with PDFfiller.
My colleague recommended PDFfiler as I needed a quick way to sign documents while on the road. PDFfiller has all the features I need, even with the free version of the software.
I think to take this software to the next level, the developer should create browser plugins to sign documents without having to upload them to the PDFfiller website.
2020-04-26
Secure PDF in Mozilla Firefox
Enhance your PDF experience directly in Mozilla Firefox with the Secure PDF feature. This tool allows you to manage your PDF files safely and efficiently, ensuring that your sensitive information remains protected at all times.
Key Features
Password protection for added security
Easy file management within Firefox
Quick sharing options for collaboration
Compatibility with various PDF formats
User-friendly interface for seamless navigation
Potential Use Cases and Benefits
Securely share confidential documents with clients
Access and edit important PDFs without the fear of data breaches
Organize your PDFs for personal or business use
Collaborate with team members while maintaining information security
Store sensitive information safely within your web browser
The Secure PDF feature in Mozilla Firefox addresses the common concern of protecting sensitive information in PDF files. With its strong security measures and user-friendly interface, you can confidently manage your PDFs without worrying about unauthorized access. This feature helps you stay organized and secure, ultimately giving you peace of mind.
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.
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How do I password protect a PDF in Firefox?
Open the PDF and choose Tools > Protection > Encrypt > Encrypt with Password 6. If you receive a prompt, click Yes to change the security. 7. Select Require A Password To Open The Document, then type the password in the corresponding field.
Is Firefox PDF safe?
If it is not on an unsecure site on the web, you don't have to worry about it. The PDF viewer works just like any other (native) PDF viewer application. It downloads the file to your computer, and shows it inside the browser window. If it is not on an unsecure site on the web, you don't have to worry about it.
How do I password protect a PDF in my browser?
One-click option to protect a PDF with a password Choose File > Protect Using Password. Alternatively, you can choose Tools > Protect > Protect Using Password. Select if you want to set the password for Viewing or Editing the PDF. Type and retype your password.
Can you password protect a PDF without paying?
Windows users have many ways to encrypt or password protect PDFs for free. If your computer comes with a Microsoft Office license, you can do it in two steps. First, open the document, click on the “Info” tab, “Protect Document,” and then “Encrypt with Password.”
Video instructions on how to Secure PDF on Mozilla Firefox
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