Unlock PDF and Add Watermark to PDF for Windows For Free

Drop document here to upload
Select from device
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.
0
Forms filled
0
Forms signed
0
Forms sent

Discover the simplicity of processing PDFs online

Card illustration
Upload your document in seconds
Card illustration
Fill out, edit, or eSign your PDF hassle-free
Card illustration
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

Card illustration

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.
Card illustration

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.
Card illustration

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.
Card illustration

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.
Card illustration

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.
Card illustration

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 a brand new user and have no idea how to use the program or other documents. I downloaded it to accommodate a Security Clearance form and haven't ventured too fa
Michael S M
2016-04-06
I enjoy the ability to convert PDF files back into MS Word. Very Often I will start in MS Word and send the document to an employer who then sends me a final version in PDF which is OK until such time as there is a need amend it. As I don't travel with a copier, printer or scanner this creates problems.
Stuart M
2017-02-27
What do you like best?
I like how easy it is to create forms and to fill out PDF forms. I also like the mobile app.
What do you dislike?
It's a bit slow, and sometimes crashes, requiring you to start over
Recommendations to others considering the product:
Definitely get and use the mobile app
What problems are you solving with the product? What benefits have you realized?
It makes it very easy to fill in forms that clients send me.
User in Law Practice
2016-05-23
What do you like best?
The PDFiller is a great tool that I would recommend to all business professionals
What do you dislike?
The dashboard is a little busy - I would like to see it better layed out
What problems are you solving with the product? What benefits have you realized?
Time saving tool
Administrator in Plastics
2019-02-25
What do you like best?
What I like best about PDFfiller is that it allows me to edit and save protected .pdf files.
What do you dislike?
I dislike the search function for documents and the fact that it takes a little while for the program to open and save a document.
Recommendations to others considering the product:
If you work in the legal field purchase this software.
What problems are you solving with the product? What benefits have you realized?
The biggest problem that PDFfiller has done for me is that it allows me to edit protected pdf files. One of the greatest benefits is that .pdf saves all of my work for me.
Roderrette McClure
2020-02-05
Blogger - PDF Filler Online use without having to download anything onto your computer. If you are a blogger you have too much on your desktop already! Easy to use. No need to have other software to fill-in your PDFs (contracts, flyers, etc.). This can be used online on any computer. You can even have docs e-signed. There's also a free trial. I do not have anything bad to say about it. It was easy to use. I will continue to use and refer people to it.
Ashley A.
2020-01-07
Necessity for obtaining digital signatures PDFfiler has helped my business be more efficient. There are a lot of features that I enjoyed using from this software. I like the ability to edit the pdf file, link to fill feature, and how this stores the documents. Navigating the pdf editing mode was confusing at first. Customer service helped me with this. I don't like how the text cuts off (writing information in the box that leads to scrolling) when printing (you can see the whole box). I have had issues when converting a pdf file to word; formatting is weird. I found myself wasting time trying to fix it.
Vilmary L.
2022-11-18
I ordered the yearly subscription… I ordered the yearly subscription instead of monthly and was easily able to fix this via the chat box on their website! Great customer service!
Natalie Bruno
2021-03-30
Well , I'm learning Well I'm still learning But the Draw option is AWESOME ,It lets you Sign in Real Time + It's Your Real Signature,Not a Generated one from putting text in a box and using thePC's script font to generate a signature .. Thanks Guys David Simmonsp.s.I'll let you know more as I learn to do more..Again Thanks..
David Simmons
2020-07-28

Unlock PDF and Add Watermark to PDF for Windows

Easily manage your PDF files with our Unlock PDF and Add Watermark to PDF feature for Windows. This tool helps you remove restrictions from your PDF documents and protect your work with custom watermarks. Whether you need to edit, share, or secure your files, this feature offers the solutions you need.

Key Features

Quickly unlock password-protected PDF files
Create and customize watermarks for your documents
User-friendly interface simplifies the process
Batch processing for multiple files at once
Maintain original document quality after modifications

Potential Use Cases and Benefits

Edit and repurpose locked PDF content for projects
Protect your intellectual property with unique watermarks
Share documents securely while preventing unauthorized use
Streamline workflow by managing multiple files with batch unlock
Enhance brand visibility with consistent watermark placement

This feature solves your problem of accessing and modifying restricted PDF files, providing both flexibility and security. You can now take control of your documents while ensuring your content remains protected. With our tool, work effortlessly while improving your 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!

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
Step 1: Select your PDF document. Step 2: Add Text Watermark. Click the Add Text button at the top of the PDF page. Step 3: Change text size, rotation and location on page. Step 4: Change text color, transparency and font family.
On the Design tab, select Watermark. In the Insert Watermark dialog, select Text and either type your own watermark text or select one, like DRAFT, from the list. Then, customize the watermark by setting the font, layout, size, colors, and orientation. Select OK.
Steps to Add Watermark to PDF File Step 1: Run PDF Watermark Tool and add PDF files to the tool, click Next. Step 2: Choose a watermark type and do all the necessary settings. Step 3: Click on Preview to see the view of the PDF page before generating. Step 4: Click on Generate to add watermark to protected PDF file.
Click CHOOSE FILE. It's a green button on the right side of the page. Select your PDF file. In the window that opens, go to the location in which your PDF is stored, then click the PDF once to select it. Click Open. Enter the user password. Click UNLOCK. Click VIEW & DOWNLOAD IN BROWSER.

How to Unlock PDF and Add Watermark to PDF for Windows - video instructions

#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