Lock PDF and Add Watermark to PDF for Windows Gratuit
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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.

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
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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:
It is a challenge to adapt to different methods in so many computer programs factoring in hardware and software and my limited patience. As with many other computer related things we need to keep trying. I am not used to doing things a certain way which may work wonderfully for others and they can't understand my way.
2015-07-28
The forms are easy to find with the search tool, and very easy to use. There are even pop-ups to tell you what type of information to enter in the different fill-in fields. I'm sure I will be using more forms in the future here.
2016-11-28
I've edited 4 documents with pdf filler which was fairly easy considering the editing I needed done was fairly simple. I'm a little disappointed that there is no on-demand training because I've only used some basic features & would like to learn alot more on all of the features that are available & how to use them
2017-07-13
When going from preview back to editable view all imputed info disappeared. Not sure why that happened but I selected cancel and all info reappeared.
2020-02-25
What do you like best?
I love this engine because I can graduate the size of letters, be able to type anywhere on the pages and save every minute all forms in secure.
What do you dislike?
I don’t have any inconvenience with this software.
Recommendations to others considering the product:
Is easy to use and it will save you time.
What problems are you solving with the product? What benefits have you realized?
I can login anywhere in the world , I don’t have to save all forms in my computer and I can save my job to continue later. Also I can login on my smartphone using the mobile APP!
I love this engine because I can graduate the size of letters, be able to type anywhere on the pages and save every minute all forms in secure.
What do you dislike?
I don’t have any inconvenience with this software.
Recommendations to others considering the product:
Is easy to use and it will save you time.
What problems are you solving with the product? What benefits have you realized?
I can login anywhere in the world , I don’t have to save all forms in my computer and I can save my job to continue later. Also I can login on my smartphone using the mobile APP!
2019-05-22
Pdffiller review
Everything is alright, and serves my needs.
Good value-for-money fairly easy to use.
Cannot easily find all the forms that I want to use. And some I believe are not available.
2019-03-12
I like the concept, but slow
I like the concept. But the processing is awfully slow. I'm going to buy a membership for my team, but I just wish everything processed more quickly.
2022-10-04
Fairly easy to use. Would like to combine 2 or more docs into one file so I can fax as a group. I'm sure that's an option; but haven't found it yet...still new at this.
2020-07-16
Still learning... but so far so good.
Convenient user interface, able to quickly make the necessary edits to my documents and I'm enjoying using the product.
2020-04-25
Lock PDF and Add Watermark to PDF for Windows
Our Lock PDF and Add Watermark to PDF for Windows feature empowers you to protect and brand your PDF documents effortlessly. This tool helps secure your sensitive information while allowing you to add a professional touch to your files.
Key Features:
Secure your PDF files with password protection
Add custom watermarks with text or images
Apply restrictions on printing or editing
User-friendly interface for easy navigation
Compatible with all PDF versions
Use Cases and Benefits:
Ideal for businesses that require document confidentiality
Useful for freelancers wanting to showcase their work with branding
Perfect for educators to protect course materials
Essential for legal professionals to secure sensitive data
This feature addresses your need for document security and branding. By using Lock PDF and Add Watermark, you ensure that your files are not easily altered or misused. Additionally, adding watermarks allows you to assert ownership over your work, which is critical in today's digital landscape.
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 you put a watermark on a document?
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.
How do I add a watermark to a PDF for free?
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.
How do you put a watermark on multiple PDF files?
Click “Add directories to list” icon to add all files in a folder to the list together;
Click “Watermark→Create→New Text Watermark” to enter into “Add Text Watermark” interface, define name, then click “Macro” button to choose unique data for different PDF copies;
How do I add a watermark to a protected PDF?
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.
How to Lock PDF and Add Watermark to PDF for Windows - video instructions
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