Last updated on
Sep 19, 2025
Add Comments to a PDF For Free
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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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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.
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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 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.
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What our customers say about pdfFiller
See for yourself by reading reviews on the most popular resources:
EASY TO USE, TRULY ALLOWS ONE TO EDIT PDFS. I WOULD LOVE TO SEE MORE FONTS AND THE ABILITY TO SET THE FONT SIZE MANUALLY, AND SMALLER THAN SIZE 8. OTHER THAN THAT, GREAT, USEFUL APP.
2017-04-19
Easy to use, unlike other fill and sign apps, it can tell the right size text. It can tell the what parts of the document requires the text. The variety of templates to use for common forms needed for most people. Also a generous 30 day trial A ++++
2018-11-22
PDF Filler
This is a very useful program to me in my work. I can easily send documents to be filled in by customers, easy to use and easy to navigate.
I do not have any cons with this program, if you are not utilizing this you should be. It is highly useful and functional
2018-03-21
That i was able to fix and remove…
That i was able to fix and remove unwanted documents to send just what i needed. The fact that I can fax without having a big machine to do, matter of fact that is one of the reasons that I decided to use pdfFiller. You make filling out important documents easy and able to sign by uploading just a picture of the signature needed. However you could make it easier to be able to create a fax sheet more personal. The one on the website is okay but not personal enough. Maybe I will think about doing the annual thing let's just see what more I can learn to do with your program. thank you for making it so easy to send important documents from the comfort of my home office without having to pay someone else to fax for me
2023-03-23
good goodgood goodgood goodgood…
good goodgood goodgood goodgood goodgood goodgood goodgood goodgood goodgood goodgood goodgood goodgood goodgood goodgood goodgood goodgood goodgood good
2023-03-16
Great Service - Great Support Team
I used this service just once, but it was very easy to navigate the site and all of its capabilities. I thought I had canceled my subscription after I was done and forgot about it until I was charged the full annual fee. I reached out to them to see if I was eligible for a refund since I had not logged into my account in 29 days. They agreed to refund the charge and were very timely about it! I will use this service again if I ever need it again.
2022-04-26
excellent pdf file editing tools
Today it is much easier to work on pdf, no need for physics. pdf filler saves us paper
pdf filler is a great tool for editing pdf files online. with many features like add text, note, watermark, add image, spell checker etc. the software supports the largest platforms such as Dropbox, one drive, google drive which makes this software an essential tool for storing and classifying its documents
by its many features that the software brings together, a learning curve is essential. the software tends to become slow during sessions on very large documents.
2022-03-25
I highly recommend if you just need to…
I highly recommend if you just need to do one project I won't comment on the long term part but I signed up for free trial made edits on a 24 page PDF I received via email and to return via email filled out. I was ripped off by two other pdf companies before I tried this one. both times I did 24 pages of work only for it to paywall it and never recover it even after taking my money.THANK YOU PDFFILLER
2021-06-10
I really appreciate being able to transform a regular,...
I really appreciate being able to transform a regular, annoying PDF into an easily accessible document my clients can sign from any device and be sent by almost any app or service. This will definitely make going paperless a reality for our business
2020-04-30
How to Add Comments to PDF
pdfFiller's simple, yet powerful editor allows you to add comments anywhere in your document.
To add a comment, select the Comment button in the main toolbar.
Press the blue Add comment button and click on the text or image you want to comment on.
Type your comment in the text field and click Comment.
To edit, delete or reply to a comment you’ve added, click More and select Edit, Delete or Reply.
Click Save when you've finished editing a comment. Click Reply when you've finished adding your response to a comment. To delete a comment, click Delete and then OK to confirm your action. To resolve a comment, click Resolve. This will remove the comment.
How do I Add Comments in PDFs?
01
Open your document in the pdfFiller editor
02
Press the blue Add comment button
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Click on the text or image you want to comment on
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Type your comment in the text field
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Click Comment
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Click More to edit, reply or delete your comment
Add Comments to a PDF Feature
Our Add Comments to a PDF feature is a game-changer, allowing you to effortlessly add comments to your PDF files with ease.
Key Features:
Annotate PDFs with text, shapes, and drawings
Highlight important sections for better understanding
Add sticky notes for additional context
Potential Use Cases and Benefits:
Easily collaborate with colleagues by leaving feedback directly on the document
Streamline review processes and provide clear instructions
Improve communication and clarity in team projects
With our Add Comments to a PDF feature, you can say goodbye to endless email chains and confusion. This tool is designed to make your workflow smoother and more efficient, helping you solve your customer's problem of effective collaboration and communication.
How to Add Comments to a PDF with pdfFiller
Adding comments to a PDF document can help you provide feedback, make notes, or collaborate with others effectively. With pdfFiller, you can easily add comments to any PDF file. Follow these simple steps to use the Add Comments to a PDF feature:
01
Open the PDF file in pdfFiller. If you don't have an account, sign up for a free trial or log in to your existing account.
02
Once the PDF is loaded, click on the 'Comments' tab located on the left side of the screen.
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Choose the type of comment you want to add. pdfFiller offers various comment options, including text boxes, sticky notes, highlighters, and more. Select the appropriate tool from the toolbar.
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Click on the area of the PDF where you want to add the comment. A comment box or annotation will appear at that location.
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Type your comment or note in the comment box. You can customize the font, size, color, and other formatting options using the toolbar at the top.
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If you want to reply to an existing comment, click on the comment and then click the 'Reply' button. Enter your response in the reply box that appears.
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To delete a comment, click on it and then click the 'Delete' button. Confirm the deletion if prompted.
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You can also move or resize the comment box by clicking and dragging its edges.
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Once you have added all the necessary comments, click the 'Save' button to save the changes to the PDF.
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If you want to share the PDF with others, click the 'Share' button and choose the desired sharing option, such as email, link, or social media.
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Congratulations! You have successfully added comments to a PDF using pdfFiller. You can now review, edit, or share the annotated PDF as needed.
Adding comments to a PDF has never been easier with pdfFiller. Start using this powerful feature today and enhance your document collaboration experience!
Did you know?
Microsoft Edge has added a sticky note-like user interface to the built-in PDF reader feature. Microsoft Edge is now a Chromium-based browser with a number of exclusive features like Read Aloud and services tied to Microsoft instead of Google. The browser has already received a few updates, with support for ARM64 devices in Edge Stable 80.
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?
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What is pdfFiller?
pdfFiller is a web-based PDF editor. With pdfFiller, you can search for, edit, store and export PDF documents online without downloading and installing any software. pdfFiller also allows you to access and modify your PDF documents from any device anytime.
What browsers do pdfFiller.com support?
pdfFiller.com supports Internet Exporter (IE), Google Chrome, and Mozilla Firefox.
Do I need to download or install any software?
No downloads needed! pdfFiller.com is web-based application that does not need any additional software. pdfFiller.com supports any browser.
Can I edit a PDF document online?
Yes. pdfFiller.com allows you to edit (modify, alter, correct, change, amend, revise, redact) any document 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.
How to annotate PDFs?
To annotate PDF documents, upload your document to pdfFiller, or choose the document your want to annotate in “My Forms” page and click “Fill” button. Open “Draw” tab and access the editor toolbar, you can have a variety of annotation features: highlight text, add comments, underline text and insert sticky notes or arrows.
How do I write on a document?
To write on a document, click anywhere on the document and begin typing.
Can I type multiple lines when I have a lot of text?
Yes. Just use “Enter” to create a line break. You can also paste large chunks of text and use Enter to restructure the lines.
How do I edit font settings?
To edit font settings, begin by clicking on the “Font” button. You can then change the font type, adjust the size and color. Furthermore, you can also, modify text in to bold, underline, and italics.
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