Lock PDF and Edit PDF for Mobile Gratis

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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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Laatst bijgewerkt op Dec 12, 2023

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:
VERY CONVENIENT!!!! I had something urgent to fill out and I couldn't fill out the form and this helped me to fill out and E sign as well as send it by email. Thankful I found the site. Needs to be advertised more. I could have used this years ago.
Farron R
2014-07-25
Great product. Made tax time for my small business EASY and COST EFFECTIVE. I did my own tax documents and saved HUNDREDS of dollars the first time I used it because I didn't have to pay an attorney to do these simple forms.
Dennis F
2015-02-02
Positive review It is so much easier to get my scholarships done. I hate writing on my scholarships, so I was having to completely retype the application which was taking time from me filling them out.One suggestion would be to do a student discount, like in my case using it for scholarships. A way to do this could be they have to enter there school and get a school code from someone and then that could verify they are a student so the company is not getting taken advantage of.
Teagan Flick
2020-03-22
So far it has delivered on it's… So far it has delivered on it's promises. Easy to use. Affordable. Customer Service is lacking helping with billing and establishing business account, but the product itself is great.
Jim
2019-06-11
Life saver ! My experience with this PDFfiller has been amazing to say the least ! This software is a life saver in so many ways! When making any kind of document or adjusting a word, date or time on a document this allows me to fix all my mistakes ! This softwares has no flaws in my opinion it's very self explanatory and has given me absolutely no issues this far.
Ashley L.
2019-08-22
Have not had time to discover ALL the options offered by pdfFiller, but from the little I have used so far it appears as a 'one-stop shop' for everything I need or might need in the future to handle my documents. Great app!
A. MOSTOVSKY
2023-11-25
An Affordable and Easy Solution for Businesses Handling E-Signatures As an inexpensive and simple tool for signing documents digitally, pdfFiller is unrivaled in value compared to other solutions offered by Adobe and others. Our company uses pdfFiller constantly to compose property deeds for our owners. We also prepare a variety of documents for our Board of Directors to sign conveniently since they are not onsite always. It does cost more money in monthly subscription fees to have faster access to customer service. At the first time we experienced a technical problem and needed a question answered we did not have the service tier that afforded same-day replies from customer support. This was an inconvenience, but we have since upgraded our services.
Aaron C.
2022-08-24
Great for e-signatures on documents that require it It's a widely utilized format and makes editing and e-signing documents simple It's not super easy to navigate and a little difficult to figure out when you first start usi
Catherine Y.
2022-07-01
I had an issue with the platform that… I had an issue with the platform that the customer services team resolved within a very short time. Very happy with the explanation and the overall outcome.
Jean
2021-08-28

Lock PDF and Edit PDF for Mobile

Keep your documents secure and editable with the Lock PDF and Edit PDF feature on your mobile device. This tool is designed to give you control over your PDF files, ensuring they meet your needs while maintaining security.

Key Features

Lock PDFs with passwords to prevent unauthorized access
Edit text and images directly within PDF documents
Merge multiple PDF files into a single document easily
Extract pages from PDFs to create new files
User-friendly interface designed for mobile devices

Potential Use Cases and Benefits

Secure sensitive documents for personal or business use
Edit contracts or reports on the go
Combine different PDFs into one to simplify sharing
Extract relevant pages for presentations or meetings
Maintain the integrity of your information with robust security features

This feature addresses the common problem of document security and accessibility. Whether you need to share confidential information or make quick edits while away from your desk, the Lock PDF and Edit PDF feature empowers you to manage your PDFs effectively. By using this tool, you can ensure your documents are safe, accessible, and up-to-date, giving you peace of mind in your mobile productivity.

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!

Video Review on How to Lock PDF and Edit PDF for Mobile

#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