Comment on PDF Documents For Free

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Discover the simplicity of processing PDFs online

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

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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 don't like that you have to hard return on open spaces or the text goes off the page. I don't like how there is not any guidance on the cursor in pre-developed forms-there should at least be a grid view option. I do like how clean it looks and intuitive it is to use.
Kim R
2014-09-26
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.
David N
2015-07-28
I like the send to sign feature but customers have had difficulty printing copies. Asking for a review so often delays the processing I need to do on business.
Mark S
2017-07-27
What do you like best?
How simple it is to use. I can sign on anywhere and make edits to pdf's. I can also convert documents. I've been using pdf filler for almost 3 years now and absolutely love it! Just renewed my subscription for year 4!
What do you dislike?
No complaints. Even on the rare occasion where the system crashes, the pdf filler team sends you an email to let you know they're working on correcting the problem. It's usually fixed within minutes.
Recommendations to others considering the product:
Don't think about it twice, use it!
What problems are you solving with the product? What benefits have you realized?
Last minute edits. Also love the signature feature that includes the dates. That comes in very handy in my field, which is real estate.
Administrator in Real Estate
2019-05-21
Thank you so much for the super prompt reply! I had somehow removed the date stamp from my digital signature and I could not figure out how to get it back on. Turns out it was a pretty simple fix (doh!). Kara responded super fast to my cry for help. She provided written instructions as well as a screenshot (very helpful!). My date stamp is back on. :)
Laura Jestings
2023-03-10
I need fast turnarounds for information as I do not have time to convert content from other platforms. I have little time and money to do things. The PDF filler is cost effective and enables me to convert content in a matter of seconds, rather than hours in some cases.
Gael
2022-01-20
Paul was quick and decisive in his… Paul was quick and decisive in his resolution, seemed very knowledgeable about the services considering the short time it took him to action my request. Glad I got him.
Jurell Stephenson
2021-10-01
No printer no program I don’t have a printer and have to email any thing needed printing to my daughter I was able to send my document to her email address to get printed.Thank you
Sandra D Collins
2021-03-26
What do you like best? PDF Filler is extremely easy to use and navigate. I've never experienced any lag or difficulties in using the software. Signatures are easy, dates are easy to inpute. What do you dislike? You don't get to really choose where files are saved when you download them. What problems are you solving with the product? What benefits have you realized? I've been able to easily fill out and save consolidation agreements, settlement letters, and anything else that I need and don't have time to print out and sign just to have to scan it in. It's definitely a time saver!
Nicole Vorron
2021-02-16

How to Comment on a PDF

pdfFiller makes it easy to comment any document online. You can type anywhere, highlight, redact or erase words and phrases, add signatures, images, sticky notes or customized watermarks without any coding.
To get started, go to MY DOCS and select a file to be opened in the pdfFiller editor.
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Across the top you’ll see a PDF toolbar. Click on a tool icon to select it, then mouse over the area on your file where you want to place it and click again. Click on the Text button to start typing or insert your sentences by dragging the text box. You can change the font type, text size or color by clicking the corresponding icons in the toolbar. Make your words bold, italic or underline it using the B, I and U icons respectively.
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pdfFiller’s online editor allows you to quickly sign your form. Press the Sign button and choose how you’d like to add your signature. You can draw it with your finger or mouse, upload it from your computer or capture it with a smartphone or webcam.
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Select the corresponding option on the Edit tab to highlight or erase the phrases. To obscure words or phrases choose the blackout tool.
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Use the tab on the right to number pages, add a watermark or view the revision history by clicking the VERSIONS tab.
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When you’ve finished editing your file, click DONE. Now you can email, print or save your file.
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Forget about the hassle of losing, editing, and redacting paper documents. With pdfFiller you can edit documents online to create legible, professional ­looking files in a matter of minutes. Experience full pdfFiller functionality that allows you to manage any document online anytime from anywhere. Check out these tutorials to learn how to create templates, make copies, and convert files to Word, Excel or PowerPoint files.

How to Comment a PDF?

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To comment a PDF online, upload a file to your account or choose an existing form.
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Choose the 'Text' button in the 'Edit' tab and start typing. You can place text by moving the text box.
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Click the 'Signature' or the 'Picture' button to sign your document or insert an image. You can also add sticky notes, comments or text boxes to any PDF file.
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Click the 'Tools' tab and edit the PDF by highlighting, redacting or erasing any text or image.
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To comment your PDF further, click the 'Watermark' and the 'Versions' tabs on the right or the 'Pages' tab on the left.
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When you're done with editing, click the 'Done' button and email, print or save your document.

Enhance Your PDF Experience with 'Comment on PDF Documents' Feature

Are you tired of juggling multiple tools to collaborate on PDF documents with your team? Say goodbye to the hassle with our 'Comment on PDF Documents' feature!

Key Features:

Effortlessly add comments and annotations to PDF files
Easily reply to comments and track conversations in one place
Assign tasks and mention team members to streamline collaboration

Potential Use Cases and Benefits:

Streamline team feedback on project proposals, contracts, or reports
Facilitate peer review processes for academic papers or research documents
Enable efficient collaboration among remote team members on design mockups or presentations

Solving the customer's problem has never been easier with our intuitive 'Comment on PDF Documents' feature. Boost productivity, foster seamless communication, and elevate your document collaboration experience with just a few clicks!

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!

How to Use the Comment on PDF Documents Feature

The Comment on PDF Documents feature in pdfFiller allows you to easily add comments and annotations to your PDF files. Follow these simple steps to make the most out of this feature:

01
Open the PDF document you want to comment on in pdfFiller.
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Click on the 'Comment' tab located at the top of the page.
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Choose the type of comment you want to add, such as a text comment, sticky note, or highlight.
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Click on the area of the document where you want to add the comment.
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Type your comment in the provided text box.
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Customize the appearance of your comment by changing the font, color, or size.
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If you want to reply to an existing comment, click on the 'Reply' button below the comment and type your response.
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To delete a comment, simply click on the 'Delete' button next to the comment.
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You can also move or resize a comment by clicking and dragging it to the desired location.
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Once you have finished adding comments, click on the 'Save' button to apply the changes to the document.

With the Comment on PDF Documents feature, you can easily collaborate with others, provide feedback, and make important notes on your PDF files. Start using this feature today to enhance your productivity and streamline your document workflow!

Did you know?

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Commenting tools do not alter the original content of the PDF document, and comments are not displayed in the printed document. Comments may address certain parts of the document that require changes, or be used as a part of collaborative work on the document to tell other authors your thoughts and opinions. In Master PDF Editor, you can view comments and export and import them.

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
Yes. pdfFiller.com allows you to edit any type of PDF document, scanned form, application, contract document, license form or certificate with our various tools and features. You can rearrange, rotate, and delete, the pages. You can also, add text, images, and signatures to each page.
To modify a scanned file, begin by deselecting the current function you are using or just simply click anywhere on the document and begin to type. Furthermore, you can then drag and move the text to your desired location.
To type in a PDF, choose Text button in Edit and start typing. Furthermore, you can also click the Erase button in the “Tools” tab and clear the content in your document. To comment font settings, click on the “Font” button. You can then change the font type or select the size and color.
To comment pages in a PDF, click the “Pages” button on the left. Select a page and click the “Move Up” or the “Move Down” button to change the order. You can also remove or rotate pages by clicking the “Delete” or “Rotate” button.

Video Review on How to Comment on PDF Documents

#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