Lock PDF on Linux 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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Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
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
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:
Still learning my way around. While it is helpful, it is not the most intuitive interface. Not bad, but could be a bit smoother and easier to navigate around.
2018-04-26
Works well but continues to have security issues in connecting with my Google Drive account. Each time I open a PDF in Drive using the PDFFiller App, I get an Unsafe warning. Please clear this problem up. I don't have the time or energy to do your survey right now, perhaps in the future.
2018-05-15
Maybe I haven't found it, but it would help if there was a way to stop the fillable areas from snapping to each other. I had to figure out work-arounds for a lot of them.
2020-01-06
What do you like best?
An interface is easy to understand. Eraser and blackout options allow to be HIPAA compliant.
What do you dislike?
disappearing buttons from time to time
What problems are you solving with the product? What benefits have you realized?
electronic signature. Go Paperless!
An interface is easy to understand. Eraser and blackout options allow to be HIPAA compliant.
What do you dislike?
disappearing buttons from time to time
What problems are you solving with the product? What benefits have you realized?
electronic signature. Go Paperless!
2018-01-02
I tried pdffiller and was very…
I tried pdffiller and was very impressed with the platform. It was relatively simple to operate. I would recommend this site.
2020-03-24
What do you like best?
Very great experience with editing pdf files. Helps to create a digital signature, no need to print the documents to sign them. PDFfiller does it all for you. What best is to save the paper save the environment.
Best website during such a pandemic situation, while working at home.
What do you dislike?
There is just one problem that it just provides limited font styles. Please provide more font options and some more features like double spacing etc.
Recommendations to others considering the product:
It is the best website if you are working from home if you are an environment lover and want to save the earth by not printing paper and also save money.
What problems are you solving with the product? What benefits have you realized?
We are in the transportation business, so we have to send the documents for the Border clearance.
Earlier, we used to print the documents and then put a border sticker and write notes with a pen on it.
But, with the help of this, we are saving a lot of paper. Just upload the docs to pdffiller and copy, paste border sticker, and write notes with edit text icon. Everything is easy now.
2021-02-16
It's cheaper than Adobe. It gets the job done and has many options for filling out PDFs. I use it mostly for the Army National Guard and now as a substitute teacher.
2020-11-09
I have found it extremely easy to use. I love that I have the ability to make my own notes and highlight passages. I also love that it is an extremely environmentally friendly option to note taking/making. Thank you!
2020-10-07
What do you like best?
I usually dont like to take time to review but this one is warranted and a long time coming. What I like best is how many hours it has saved us. We subscribe to several tools and PDFFiller is one of them that we use on a daily basis at the office. I cannot tell you how much time this has saved us especially while submitting proposals. We also love the fact that it has an inbuilt ability to send out e-signature similar to docusign so we do not have to subscribe to a separate service for that. If there is one tool that has given us a 100x return on our investment that is PDFFiller. I am also thankful to the PDFFiller team as they keep on innovating and adding new features.
What do you dislike?
Nothing really. Like I said above, this tool as delivered massive value to our company.
What problems are you solving with the product? What benefits have you realized?
Editing PDF docs, adding, merging, e-sign docs etc etc.
Avoids us having to scan docs
I mean it has a bunch of features that once you start using it you will be like WOW!
This is one of the MUST HAVE productivity tools in your arsenal.
2020-08-06
Lock PDF on Linux Feature
Protect your sensitive documents with the Lock PDF feature on Linux. This tool offers a simple and effective way to secure your PDF files from unauthorized access. By locking your PDFs, you can ensure that only authorized users can view, edit, or share your important information.
Key Features
Set password protection to control access
Restrict printing and copying of content
User-friendly interface for quick action
Compatible with various Linux distributions
Maintain document integrity
Potential Use Cases and Benefits
Share confidential reports with team members securely
Protect financial documents from unauthorized access
Lock personal files before sharing via email
Ensure compliance with data protection regulations
Safeguard intellectual property in business presentations
Locking PDFs on your Linux system addresses the growing concern of data security. By implementing this feature, you prevent unauthorized access, maintain confidentiality, and protect your valuable documents. As you navigate the digital landscape, securing your PDFs becomes not just important, but essential.
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
How do I protect a file with a password?
Go to File > Info > Protect Document > Encrypt with Password.
How do I password protect a file in Linux?
How to Password-Protect Files on Linux Open the terminal. Use the cd command and ls command to navigate to the directory containing the file you want to password-protect. Once inside the directory, run the following command to encrypt your file: gpg -c filename.
How to encrypt a file Linux?
That's it. Open a terminal window and generate a GPG key. ... Change into the directory housing the file. ... Encrypt the file. ... Configure the password cache agent. ... the required software. ... Open the Nautilus file manager. ... Select your encryption method. ... Decrypt the file.
Which utility can be used to password protect file in Linux?
GPG. GPG, or GNU Privacy Guard, is a free and open-source encryption tool that uses OpenPGP standard. It's a widely used tool that offers both symmetric and asymmetric encryption. With GPG, you can encrypt files with a password or a public key.
How to lock a file in Linux with password?
How to Password-Protect Files and Folders on Linux Step 1: EncFS. ... Step 2: Create a folder for EncFS. Step 3: Set up EncFS. ... Step 4: Move files into the encrypted folder. Step 5: Unmount the encrypted folder. ... Step 6: Access your files.
How do I encrypt a PDF in Ubuntu?
How to password-protect a PDF file on Ubuntu sudo apt-get pdftk. pdftk output user_pw pdftk input.pdf output output.pdf user_pw 1234.
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