Add Watermark to PDF and Secure PDF File for Server 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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Last updated on Sep 20, 2025

Discover the simplicity of processing PDFs online

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Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
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Every PDF tool you need to get documents
done paper-free

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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.
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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.
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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.
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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.
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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.
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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 just learning about this program. So far it is easy and appears secure. I have initially been using the redaction/ blackout feature for several PDF files that I am sending to a client and it has been very effective. I am impressed with the "save" feature in that it allows you to save the edited file in a different format, I.e. Word.
Robert J
2017-03-16
Many thanks to your "support" crew as I… Many thanks to your "support" crew as I found the first time through this in a long time is difficult to figure out. I will be filing this form on Monday so will let you know if we got it right!
jhhcoinc
2022-04-29
Subscription Help Review I needed some assistance with my subscription and Kara was wonderful at understanding my needs and offering a suitable solution!
Qualia Holder-Cozart
2022-01-05
My printing is horrible. This allow me to fill out legal forms without having to do them over and over. I will say getting the cursor right where you needed it was difficult.
Joanne W
2021-10-18
What do you like best? super convenient to find the forms that i need What do you dislike? when i want to go back to a doc i have to go all the way back to the main doc menu What problems are you solving with the product? What benefits have you realized? Almost all the forms i need are on PDF. I rarely have to look elsewhere
Monica Arguijo
2021-10-14
Best customer service ever Best customer service ever! I accidentally signed for a year and it cost me an amount of money I can't afford (it doesn't seem much, but when your local currency is way behind USD, it greatly hurts your wallet). After reaching Rachel on pdfFiller's customer service team, they not only refunded me but also waived a month of free access. I couldn't be happier of using it! Recommending it to all my friends, from now on!
Luiz Ferreira
2021-05-13
Useful and handy website Useful and handy website! Excellent customer service, very kind and helpful. Would highly recommend for all your PDF needs.
Rebecca Stapleton
2021-01-12
This made filing my documents SOOO much… This made filing my documents SOOO much easier! It also looks so much more professional than handwriting or typing in. Was so happy to find this.
Elizabeth Davidsmeier
2020-09-11
This program is awesome and i can edit pdf and keep... This program is awesome and i can edit pdf and keep them online like a private cloud. You have done a great job by creating this software. Thank you a lot for this.
simone n.
2020-08-31

Add Watermark to PDF and Secure PDF File for Server

Protect your important documents with our Add Watermark to PDF and Secure PDF File feature. This tool empowers you to safeguard your files while maintaining professionalism.

Key Features

Easy watermark addition to any PDF document.
Options to customize watermark text and appearance.
Enhanced security settings to restrict access and permissions.
Batch processing for multiple files at once.
Compatibility with various server environments.

Potential Use Cases and Benefits

Ideal for businesses needing to brand confidential documents.
Suitable for organizations wanting to restrict file sharing and editing.
Great for freelancers protecting their portfolios.
Useful for educational institutions managing sensitive information.

This feature resolves the challenge of unauthorized use and distribution of your documents. By adding a watermark, you deter unauthorized copying and distribution. Additionally, by securing your PDF files, you maintain control over who can view, edit, or share your content. With our solution, you can focus on your work, knowing that your documents are protected.

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
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;
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.
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;
Step 1: Run PDF Watermark Tool and add PDF files to watermark. Step 2: Enter text to insert as watermark. Step 3: Select a new location to save the PDF file. Step 4: Click on add watermark to PDF file.

How to Add Watermark to PDF and Secure PDF File for Server - 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