Última actualización el
Jan 16, 2026
Lock PDF and Split PDF for Mobile Gratis
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Every PDF tool you need to get documents done paper-free
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.
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.
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.
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.
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.
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
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average user rating
4M
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Top-rated for ease of use
Create, edit, and fill out PDF documents faster with an intuitive UI that only takes minutes to master.
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What our customers say about pdfFiller
See for yourself by reading reviews on the most popular resources:
I use a Chromebook. I joined a Chromebook forum And PDFfiller came highly recommended when I needed to send a fax, fast. I was very impressed with the ease of transferring a PDF file and faxing it with a few very easy steps. I've since needed it again and to happy that I had it. I will definitely be checking out other option PDFfiller has to offer.
2015-05-11
The system worked very nicely overall. I have uploaded several documents now and found it very nice for completing PDF and Pre-made fillable Word documents as well. I only had one minor glitch the first time I used it, but have not seen it repeated in several usages since. Overall I would definitely recommend this if you have to regularly fill and edit forms.
2016-03-02
Accidently joined the annual membership and they promply refunded my money. Also it is very easy to use, well organized just like a pdf email box with several options available.
2016-08-31
I like the send to sign feature but customers have had difficulty printing copies. Asking for a review so often delays the processing I need to do on business.
2017-07-27
originally i was dissatisfied with paying $20 to learn how to use the system and still did not get any benefit. Then customer service reached out to me to provide assistance and work on a solution. I am still learning how to effectively use it but am happy for their willingness to help.
2017-10-05
Definitely an aid needed in my industry for State regulatory data gathering forms. Tedious and every facility utilized the 35 pg form differently with no consistency. The tool is also very physician specific though as a Nurse Practitioner a good degree of crativity is required to enter the desired information that has no technical heading/home within the document. Adding pages and making duplicates is key as it often required, especially with added clinical experience and with work history. The ssimple 35 pages easily grows to over 60 at times.
2018-05-21
I have found this PDFFilter writer and downloader to be exceptionally useful and user-friendly. It organizes my files clearly, making navigation simple and efficient. Additionally, the integration with Dropbox and Google Drive, as well as the ease of downloading files directly to my computer, significantly enhances its convenience.
2024-08-20
Like most of the features
Like most of the features, I would like it if I could make boundaries and then just fill in the inside of the shape that I make like the old-school paint application.
2022-03-01
What do you like best?
User friendly. Can do anything I really need, from editing pdfs, splitting up and saving parts of documents, signed documents, etc.
What do you dislike?
The sign in page can be a bit wonky and hard to see if you're signed in. If you've been signed out and start uploading it puts you into the trial mode, and once you figure out whats going on you have to start over.
What problems are you solving with the product? What benefits have you realized?
Signing documents is really important for me, which is the biggest benefit. But the ability to edit and fill out pdf documents has been wonderful as well.
2020-08-21
Lock PDF and Split PDF for Mobile
Managing PDF files on your mobile device just got simpler with our Lock PDF and Split PDF feature. This tool provides essential functionality for anyone who frequently deals with important documents. Whether you are a student, a business professional, or someone who shares files often, this feature helps you keep your PDFs secure and organized.
Key Features
Secure your PDFs with password protection
Easily split large PDFs into smaller, manageable files
User-friendly interface for quick navigation
Access files on the go with mobile convenience
Maintain the quality of the original document
Use Cases and Benefits
Protect sensitive information from unauthorized access
Share only the necessary sections of large documents
Organize your files for clearer presentation in meetings or classes
Reduce file size for easier sharing via email or messaging apps
Enhance productivity by managing documents directly on your mobile device
This Lock PDF and Split PDF feature addresses the common problems of document security and file management. You no longer need to worry about sharing sensitive information, as you can easily lock your PDFs with a password. Additionally, if you have a large document, you can split it into smaller files that are easier to handle. With this functionality at your fingertips, you gain control over your PDFs and ensure that your important information remains safe and organized.
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
How do I split up PDF files for free?
Drag and drop your PDF into the PDF Splitter.
Choose to 'Extract every page into a PDF' or 'Select pages to extract'.
For the latter, select the pages you wish to extract.
Click 'Split PDF', wait for the process to finish and download.
How do I password protect a PDF on my phone?
Open the PDF Utilities app and tap Select next to Select PDF. Once you've located your file, select it and tap Start. You'll get a pop-up asking you enter the PDF password.
How do I password protect a PDF for free?
Choose Tools > Protect > Encrypt > Remove Security. Remove Security: The options vary depending on the type of password security attached to the document. If the document has a Document Open password, click OK to remove it from the document.
How to Lock PDF and Split PDF for Mobile - video instructions
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