Unlock PDF and Lock PDF for Mobile 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
Note: Integration described on this webpage may temporarily not be available.
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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
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:
I am new to this program the search engine next to the description of the for would be great if you could see a picture of the for rather than having to click on it if it is not the one you want then back to the search engine
Steve T
2016-06-19
like the fact I can fill and type.. but not easy to understand how to find forms, unless you pay for another part of service.>>??? is this correct
Carlos
2018-04-17
PDFfiller is making filling out forms much more streamlined. As a non-profit organization we try to look for things make the running of it more efficient. PDFfiller has made this possible. No more trying to create the forms and fill in the tiny blocks. Just create, insert, and print.
Kristie
2019-07-24
I tried adobe and a couple of other PDF… I tried adobe and a couple of other PDF editors and they all had problems with tax forms. pdfFiller was flawless.
Valerie Duvall
2024-11-05
So far so good I think the app is very good, well worth the price. Some features would be really good to have on the offline app. Only had it one day but other than that the editing tools are perfect for my business needs.
Daniel Winyard
2023-08-29
This is an all in one business tool This is an all in one business tool; you can sign, fill, edit, add to, merge, notarize, pretty much anything and everything. An essential if you do business of any sort.
Ali
2022-09-18
PDFfiller for contracts I use pdf filler for anything between signing contracts and making NDAs. It's easily recognizable and has a good reputation. The verified process and the ease of use. It can get too expensive at times if you aren't getting discounts or special offers.
Leah D.
2022-05-21
Great but just too expensive Great but just too expensive. Especially considering we are already subscribed to so many other SaaS, this feels over priced.
Tech Mom
2021-10-20
I thought it was a bit difficult to get a form completed. All I wanted was a statement that I paid my neighbor for a dent in his car. I had to hunt for a form that would allow me to enter that statement.
Ruth Ann E
2021-06-05

Unlock PDF and Lock PDF for Mobile

Manage your PDF files with ease using our Unlock PDF and Lock PDF features designed for mobile. Now, you can access, edit, and protect your documents on the go.

Key Features

Unlock PDF files for instant access to the content you need
Lock PDF files to protect sensitive information with a password
User-friendly interface designed for a seamless mobile experience
Compatibility with various types of PDF documents
Fast processing time for both unlocking and locking functions

Potential Use Cases and Benefits

Unlock important documents for quick edits or reviews
Lock files before sharing them to ensure privacy and security
Convenience for professionals needing quick access to paperwork on the move
Safeguarding personal information in sensitive documents
Simplifying document management while traveling or working remotely

By providing these features, you can confidently handle your PDF files anywhere. Whether you're unlocking a file to make important changes or locking it to maintain privacy, our solution addresses your needs effectively. Take control of your documents and enjoy peace of mind knowing your information is secure.

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!

How to Use the Unlock PDF and Lock PDF for Mobile Feature

Unlock PDF and Lock PDF for Mobile is a convenient feature of the pdfFiller product that allows you to easily unlock and lock PDF files on your mobile device. Follow these simple steps to make the most of this feature:

01
Open the pdfFiller app on your mobile device.
02
Sign in to your pdfFiller account. If you don't have an account, you can create one for free.
03
Once you're signed in, tap on the 'Unlock PDF' or 'Lock PDF' option, depending on what you want to do with your PDF file.
04
If you selected 'Unlock PDF', you will be prompted to upload the PDF file you want to unlock. Tap on the 'Upload' button and select the PDF file from your device's storage.
05
After the PDF file is uploaded, pdfFiller will automatically unlock it for you. You can now make any necessary edits or changes to the unlocked PDF file.
06
If you selected 'Lock PDF', you will be prompted to upload the PDF file you want to lock. Tap on the 'Upload' button and select the PDF file from your device's storage.
07
After the PDF file is uploaded, pdfFiller will lock it for you, ensuring that no further changes can be made to the file.
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Once you have unlocked or locked the PDF file, you can save it to your device or share it with others via email, messaging apps, or cloud storage services.
09
To access your unlocked or locked PDF files later, simply open the pdfFiller app and navigate to the 'Unlocked PDFs' or 'Locked PDFs' section, depending on the action you performed.
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From the 'Unlocked PDFs' or 'Locked PDFs' section, you can easily manage and organize your files, rename them, delete them, or perform other actions as needed.

With the Unlock PDF and Lock PDF for Mobile feature, you have the flexibility to unlock and lock PDF files on the go, making it easier than ever to manage and secure your important documents.

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.
Unlock your mobile device. Open Settings. Tap the Lock Screen or Lock Screen and Security option. Tap Screen Lock Type. Under the Biometrics section, disable all options.
Start by downloading the app from Google Play. Next, open it > password protection > import the PDF from your device memory. If you don't see any directory, clear the app data and try again. Now, you'll see two password option owner password and user passwords.
Download and install PDF Utilities from Google Play. Make sure that you've already downloaded the PDF file of which you want to remove the password. Open the PDF Utilities app and tap Select next to Select PDF. Once you've located your file, select it and tap Start.

#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