Mask PDF on Ubuntu 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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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
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:
Excellent service and initially I had an issue which was a user issue and not the fault of this company. This is an excellent product and excellent customer resolving my issue immediately and to my satisfaction. Completely satisfied !!!
2016-04-06
I used your program to work with government forms we needed to complete so I decided to try it for our Contract and Form paperwork that needs to be submitted.
2018-05-25
PDF filler has been a life saver! So many times I have been required to fill out documents that most would typically print out, fill by hand, scan, and email back. PDF filler has allowed me to save time by being able to fill out the forms digitally, tremendously increasing my productivity and turn around time. All documents are neat and professional-looking, including my digital signature! Initially I was unsure about whether or not it was worth spending the money on PDF filler b/c I wasn't sure how often I would be using it, but now I would definitely say it's worth it! An absolute necessity for any business to have to get things filled out quickly and neatly!
2019-03-10
I think this is the most user friendly app and the customer service experience has been outstanding. I have MS and am computer challenged. Thank you for making my life a little easier.
2019-11-11
I love to be able to use the pdf filler app much easier and it has become very important for us in documents we need to fill out and sign and send. I would like to see some ease in the selecting the editing of a document, can the display of boxes for each section be less overlapping each other, this may be difficult to do. Sometimes when you have a saved pdf document you do updates rather than create a whole new document, we use them as templates. Right now the easiest way is to create a document in Word, save it as a Word doc and as a PDF doc. Which is okay, often, time is a factor and to quickly update a pdf file would be faster. Thanks for listening.
2020-01-15
What do you like best?
As a Realtor, my whole business is based on electronic documentation. PDF filler is kind of named poorly, because it really is a PDF editor. It allows you to easily change almost anything on a pdf document...across both desktop and mobile platforms. It simply works as you'd expect it to...every time. I use it practically every day.
What do you dislike?
I wish there were better tools for generating lines (how about a toggle into and out of orthagonal for a line?) It should allow deeper zooming with a thumbnail view showing where you are in the overall document. I like my pdfs to look perfect and sometimes these limit me in that goal.
What problems are you solving with the product? What benefits have you realized?
A Realtor literally lives or dies on his/her electronic documentation. This tool lets me master the changes that inevitably occur with documents. I use it every day.
As a Realtor, my whole business is based on electronic documentation. PDF filler is kind of named poorly, because it really is a PDF editor. It allows you to easily change almost anything on a pdf document...across both desktop and mobile platforms. It simply works as you'd expect it to...every time. I use it practically every day.
What do you dislike?
I wish there were better tools for generating lines (how about a toggle into and out of orthagonal for a line?) It should allow deeper zooming with a thumbnail view showing where you are in the overall document. I like my pdfs to look perfect and sometimes these limit me in that goal.
What problems are you solving with the product? What benefits have you realized?
A Realtor literally lives or dies on his/her electronic documentation. This tool lets me master the changes that inevitably occur with documents. I use it every day.
2019-01-29
Easy to use and has multi functions that otherwise you would need to purchase separately elsewhere.
I gained TIME, thus I was on time with my tasks, and met deadlines.
Very easy to read, highlight, insert comments (etc), insert and replace figures in pdf documents. It has saved me TIME! I love that it offers features that make manipulation of multiple files easy and fast. I also like the electronic signature option so documents look very professional.
2017-11-15
I just keep working towards being able…
I just keep working towards being able to afford this amazing tool. I am wondering if their is a discount when an Australian Charity or Not for Profit is utilising this Application.
2020-10-27
Every programs are so easy to operateI I am grateful.
Every programs are so easy to operate. This is the best price for me and to get my work done. Thanks
2025-03-20
Mask PDF on Ubuntu: Protect Your Documents with Ease
Mask PDF on Ubuntu helps you secure sensitive information in your PDF files. Whether you want to hide personal details, financial information, or any confidential content, this feature offers a reliable solution.
Key Features of Mask PDF on Ubuntu
Easily hide or redact sensitive content in PDF files
User-friendly interface for quick and efficient masking
Supports various PDF formats for versatility
Maintain document layout while masking information
Compatible with Linux distributions for seamless use
Potential Use Cases and Benefits
Protect personal data in resumes or cover letters
Secure financial records before sharing with clients
Mask confidential business information in reports
Ensure privacy compliance for sensitive customer data
Safeguard information in academic papers or research
By using Mask PDF on Ubuntu, you can confidently share your documents without worrying about exposing private information. This feature empowers you to take control of your data privacy, ensuring that only the relevant information is visible to your audience.
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 black out text in a PDF in Ubuntu?
Click Add or Edit annotations > Choose Add shapes in the upper-right corner > Select a darker color from the Change Color drop-down menu to fill the shape > Use the mouse to swipe and black out the text in the PDF.
How do I black out text in a PDF without redacting?
Step # 3: Highlight the text you want to black out. Step # 4: Right-click on the highlighted text and select "Properties" from the dropdown menu. Step # 5: In the Properties window, click on the "Fill" tab. Step # 6: Choose the color you want to use to black out the text.
Does Ubuntu have a PDF editor?
Editing PDF on Ubuntu with LibreOffice Step 1: Launch LibreOffice on your Ubuntu system and on the welcome screen, click on "Open File" to browse for the file you want to edit. It may take a while to open the PDF file and once open, you should see the file in editable mode.
How do you mask data in a document?
The Ultimate Guide to Data Masking Substitution. Shuffling. Averaging. Nulling out (Deletion) Data Redaction (blacklining) Data Scrambling. Data Encryption.
How do I mask a PDF document?
To do this, navigate to Tools and select Redact > Redact Text & Images > Find Text & Redact. This makes it easy to identify and then black out that content throughout the document. You can also specify general patterns, such as phone, Social Security, or credit card numbers.
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