Lock PDF and Secure PDF File for Website Gratuito

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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
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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:
I love the program. I could wish it had some other features for editing the existing documents but for what I generally need (real estate forms) it is fantastic!
Robert M
2018-10-10
My need for a Blumberg standard lease was satisfied, however the number of typographical errors in the form were surprising and correcting them caused a change in the font!! Very frustrating!
Mary
2019-02-02
Slick tool. Nice editing capabilities. Some of the menus are confusing - for example: finding where to update an existing link to fill document is challenging.
Jeremy R
2019-02-27
Initially was not happy for being… Initially was not happy for being charged £150 after my free trial ended (without knowing) though they processed my refund very quickly.
Sara Nazir
2019-07-24
Excelent progtram I am a first time user and have found this to be an excellent program. I filled out a document with many different choices I'm very Pleased with the results
Don Chard
2021-03-19
Great free software for editting PDFs Great free software for editting PDFs. Unfortunately, I could not combine files, or extract pages so I had to go back to using adobe for my business
Brandon Eddy
2021-02-22
Cancelled my subscription within the 30 Trial Period and was charged the following month. Had an online chat and they issued a refund with no questions asked. Good Business!
Laura
2020-10-29
I signed up originally to utilise this service. Whilst I did not wish to continue with the service (just wouldnt need it again) I did struggle to cancel the service. I sent an email outlining my issue and got the quickest response back and my account fixed and funds returned. Great service if you do require all the time. Easy to use. Highly recommend.
Bmua
2020-07-25
I love that I can easily cancel my… I love that I can easily cancel my Trial subscription. It is not scam, you can try and leave if you dont need it.
Jasmina Markovic
2025-05-16

Lock PDF and Secure PDF File for Your Website

Protect your valuable documents with our Lock PDF and Secure PDF File feature. This tool offers a simple way to secure your PDF files, ensuring only authorized users have access. In a world where document security is vital, you can trust our solution to keep your information safe.

Key Features

Password protection for sensitive files
User-friendly interface for easy setup
Ability to set permissions for viewing, printing, or editing
Compatibility with various devices and operating systems
Fast encryption process to secure your documents

Potential Use Cases and Benefits

Businesses can secure financial reports from unauthorized access
Educators can protect course materials shared online
Legal professionals can store contracts safely without risk of alteration
Healthcare providers can safeguard patient information
Content creators can prevent unauthorized distribution of their work

This feature solves your document security challenges by providing a robust yet straightforward method to lock your PDF files. You can share information confidently, knowing unauthorized users cannot access sensitive content. Improve your online security today and focus on what truly matters – your work.

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!

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
Open the PDF and choose Tools > Protect > Encrypt > Encrypt with Password. If you receive a prompt, click Yes to change the security. Select Require a Password to Open the Document, then type the password in the corresponding field.
Open your PDF. Go to Protect Tab. Click Password. Enter Password. Select the Printing allowed dropdown. Select None means to prevent printing. Select the Changes Allowed dropdown. Select None -means the highest level of protection.
Open your PDF. Go to Protect Tab. Click Password. Enter Password. Select the Printing allowed dropdown. Select None means to prevent printing.
Protect PDF from Copying and Editing Go to the “Protect” tab, then click the “Set Password” button. Then select the option of “Permission Password”. Enter your desired password and permissions. Once confirmed, click on “Save” button to apply, and save your PDF file.
Go to the post or page that you wish to protect. Right under the Publish button, change the visibility to Password Protected. Enter the password and hit Publish.

How to Lock PDF and Secure PDF File for Website - video instructions

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