Unlock PDF and Secure PDF File for Android 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 Sep 20, 2025

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:
Confusing.. Registration gets you nothing.. then you end up paying then you can do something. Why Register if you cannot do anything with the form... does not make sense.
Anonymous Customer
2014-11-23
I needed PDF Filler (or something like it) for a specific purpose and for a short time. It got the job done. I was surprised to see the Annual Fee ($72.00) show up on my credit card statement, instead of the monthly fee ($6.00). I cancelled my subscription on 4/11/2016, and have been checking my statements for a refund. Am I waiting in vain?
MICHAEL L. R
2016-06-05
PDF Filler has saved me a lot of time and money. I deal with contract and paperwork on a daily basis. Before I got PDF Filler I had to run to my office print ,fill in blanks ,scan and emailback. Now i just upload to PDF Filler and type the changes i need for my paperwork .Thanks Angie
Angie M
2018-05-29
What do you like best about the product? The affordability of pdf filler to begin with . It's an excellent price for all of the features u need to run a business . And the pff filler is incredibly easy and quick to use . With ismts many features u can do everything from creating your own documents to keep ur business running smoothly to editing documents to fit your needs down to signing document and sending them out to partners or clientele.all in all PDf filler is a awesome addition to your business to keep thingsvk running What do you dislike about the product? I haven't yet found anything that I dislike . Or found not useful. What problems is the product solving and how is that benefiting you? PDF Fill gives me the ability to either edit a particular document to suit your business needs at the moment or create a document . You can do everything needed from pdf filler from create odit to sign or send to be signed to file , email etc it's very easy to understand and use as well as affordable
LeeAnn Jarvis
2023-08-12
IRS Filing Made Easy This service ability to work with the IRS is it's most valuable quality for me. I want to fill out documents quickly and file quickly. I believe this service with allow me to do that.
Greg Thomas
2023-04-10
The soft didn't work for me but the… The soft didn't work for me but the customer service (Shennen) was answering in seconds and proceed for my refund! Amazing experience!
Denis Dobre
2021-11-23
I wish after doing a merge I wish after doing a merge, it would give me the option to save it only in the main documents page, rather than having to download it.
Rick Militello
2021-06-24
I never leave reviews, but Elisa from the 'chat' help was so helpful that I am leaving a review!!! I usually avoid chat help on websites, but Im glad I stumbled upon Elisa. Truly helpful and very efficent. Just became a happy customer
roy k
2020-10-20
I never leave reviews, but Elisa from the 'chat' help was so helpful that I am leaving a review!!! I usually avoid chat help on websites, but Im glad I stumbled upon Elisa. Truly helpful and very efficent. Just became a happy customer
roy k
2020-10-20

Unlock PDF and Secure PDF File for Android

Managing PDF files on your Android device can be challenging, especially when you encounter locked documents. With our Unlock PDF and Secure PDF File feature, you can easily access and protect your important files. This tool simplifies the process, letting you focus on what matters most.

Key Features

Unlock encrypted PDF files effortlessly
Secure your PDF documents with passwords
User-friendly interface for quick navigation
Support for multiple file formats
No cloud connection required for processing

Potential Use Cases and Benefits

Access important work documents without hassle
Share secure files with clients or colleagues
Protect sensitive information from unauthorized access
Organize personal records safely on your device
Ensure compliance with privacy standards

This feature addresses your need for convenience and security. Whether you want to unlock a PDF to view a report or secure personal files, our tool provides a reliable solution. You no longer have to worry about accessing locked content or exposing sensitive data. With just a few taps, you gain control over your PDF files.

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
Now, Open your file explorer, the default one or ES and navigate to the password encrypted PDF file you intend to open. Here select the Open with Drive PDF Viewer option as shown in the above image. Here, enter the password given to you for the PDF file and tap on the Open button.
Drag and drop your document in the PDF Password Remover. Confirm that you have the right to the file and click 'Unlock PDF!'. The decryption process should start right away. Modify your PDF further, or click 'Download File' to save the unlocked PDF.
Click CHOOSE FILE. It's a green button on the right side of the page. Select your PDF file. In the window that opens, go to the location in which your PDF is stored, then click the PDF once to select it. Click Open. Enter the user password. Click UNLOCK. Click VIEW & DOWNLOAD IN BROWSER.

How to Unlock PDF and Secure PDF File for Android - video instructions

#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