Easily Edit and Add Comments to PDF online For Free

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Based on 12500+ reviews
Last updated on Sep 22, 2025

Easily Edit and Add Comments to PDF online with pdfFiller

To easily edit and add comments to a PDF online, use pdfFiller's intuitive interface. First, upload your PDF file, then use the editing tools to modify text, add new elements, or insert comments. Save your document directly to the cloud or download it for offline access.

What is editing and adding comments to PDF?

Editing and adding comments to a PDF involves making modifications to the document's content and inserting notes or remarks for collaboration. This capability is essential for workflows where feedback, revision, or clarification is necessary, especially in professional settings where documents circulate among multiple stakeholders.

Why editing and adding comments is important in PDF workflows?

Being able to edit and comment on PDFs is crucial in today's digital workplaces. It streamlines communication and enhances collaboration, allowing team members to share insights directly on documents. This reduces confusion and creates a clearer path toward finalizing projects, saving both time and resources.

Core capabilities of editing and adding comments in pdfFiller

pdfFiller offers a robust suite of tools for editing PDF documents and adding comments. Users can modify text, annotate with comments, highlight sections, and fill forms seamlessly. Additionally, the cloud-based platform ensures access from anywhere, enabling teams to collaborate in real-time.

Formatting text when you edit and comment: fonts, size, color, alignment

In pdfFiller, users can format text while editing or commenting by customizing font types, sizes, colors, and aligning text. This flexibility allows for clearer communication and a more professional presentation of documents, tailored to specific needs or branding guidelines.

How to erase or redact when you edit and comment

With pdfFiller, you can effectively erase or redact content that you wish to hide or remove while editing PDFs. The erase tool allows users to delete specific text or elements, while the redaction feature lets you permanently obscure sensitive information to protect privacy during document sharing.

Styling text as you edit and comment: bold, italic, underline

pdfFiller supports basic text styling such as bold, italic, and underline. Utilizing these styles effectively can enhance the visibility of key points in comments or edits, ensuring that your message stands out and captures the reader's attention.

Step-by-step guide to editing and adding comments using pdfFiller

  1. 1.
    Visit the pdfFiller website and log in to your account.
  2. 2.
    Upload your PDF by clicking the 'Upload Document' button.
  3. 3.
    Select the editing tools available in the toolbar.
  4. 4.
    Make the necessary text changes or insert new comments.
  5. 5.
    Customize text formatting as desired.
  6. 6.
    Save your document or share it directly with collaborators.

Where and why businesses edit and add comments

Numerous industries utilize PDF editing and commenting, including education, healthcare, law, and corporate environments. Businesses edit and comment on PDF documents to provide feedback on contracts, share case studies, or gather input on educational materials. This capability fosters more engaged teams and faster decision-making processes.

Alternatives to pdfFiller for those who need to edit and comment

While pdfFiller provides a comprehensive set of features, other options such as Adobe Acrobat, Foxit PDF Editor, and Nitro PDF also offer similar capabilities. Comparisons should be made based on user interface, pricing, and specific feature sets catered to unique user needs to determine the best fit.

Conclusion

Editing and adding comments to PDFs online is a vital component of effective document management, and pdfFiller provides the necessary tools to streamline this process. With its easy-to-use interface and robust features, users can enhance collaboration and ensure their documents convey clear messages. Explore pdfFiller today to experience simplified and efficient PDF editing and commenting.

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The online PDF editor that has it all

Edit PDFs without workarounds

Quickly add, erase, replace, or reformat text in PDFs without converting files back and forth or using clunky desktop software. Our editor works on any device, allowing you to fill out forms and make edits wherever you are.
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Add legally binding signatures

Sign PDFs directly in the editor—no extra eSignature tools needed. Add your signature or initials after editing a contract or agreement and send it out to sign.
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Make a lasting impression with your PDFs

Add images, logos, tables, and watermarks to maintain a professional look of your documents on any device. Draw lines and arrows, insert checkmarks and shapes, or draw freehand to make quick markings or organize information.
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Annotate and collaborate

Highlight important data, redact sensitive details, add sticky notes, and exchange comments for speedy document reviews. Share files instantly to request edits, feedback, or approval—no need for email attachments.
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Create fillable PDF forms

Turn static PDFs into interactive fillable forms anyone can complete online. Drag and drop text boxes, signature fields, dropdowns, and checkboxes, then share your form via a link or publish it on your website.
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Split, merge, and rearrange

Edit and reorganize your PDFs in one place. Split a large PDF into bite-sized docs or merge separate files into one comprehensive document. Need a smaller file size? Compress your document with just one click!
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How to edit PDFs with pdfFiller

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1. Upload or create

Upload a document, find a template in our online library, or create a blank PDF and design it from the ground up.
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2. Edit in seconds

Open your document in our drag-and-drop PDF editor and use the tools in the top panel to make edits or add fields.
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3. Save or export

Once finished, download a document in any format or send it straight to cloud storage.
Upload your document

Who needs this?

Explore how professionals across industries use pdfFiller to edit PDFs.
Education
Real Estate
Healthcare
Finance
Human-Resources
Legal
Education

Education

Educators and administrators use pdfFiller to edit lesson plans, sign permission slips, and collaborate on curriculum updates. Create fillable forms for enrollment or evaluations, and organize PDFs with ease, all on one platform.
  • Lesson plans
  • Permission slips
  • Enrollment forms
  • Course registration forms
Real estate

Real Estate

Real estate professionals rely on pdfFiller to manage property documents efficiently, ensuring a polished and professional experience for clients. They edit, sign, annotate documents, highlight key terms, and merge files to organize listings or prepare polished presentations.
  • Lease agreements
  • Sales contracts
  • Client intake forms
  • Property listing agreements
Healthcare

Healthcare

Healthcare providers use pdfFiller to manage patient and administrative documents with tools to edit intake forms, sign consent forms, add watermarks, annotate reports, create fillable forms, and organize files by splitting or merging PDFs—all in one place.
  • Patient intake forms
  • Sign consent forms
  • Medical reports
  • Appointment forms
Finance

Finance

Financial professionals trust pdfFiller to edit and sign sensitive documents with ease, ensuring every interaction is accurate and professional. With pdfFiller, they can easily modify content, highlight key information, redact sensitive details, and share comments for faster document reviews.
  • Financial statements
  • Contracts & agreements
  • Financial reports
  • Expense reports
human-resources

Human-Resources

HR professionals use pdfFiller’s editing tools to streamline their work. They can edit contracts or policies on any device, sign and send NDAs or offer letters, add company logos, annotate reviews, and create fillable forms to make employee management more efficient.
  • Employment contracts
  • NDAs
  • Offer letters
  • Employee feedback forms

PDF editing is just the beginning

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More than a PDF editor

Create and edit PDFs, collect data and signatures, collaborate, and manage files securely in the cloud. pdfFiller empowers you to handle all your document tasks in one place.

Your productivity booster

Stay in the loop and access your documents anytime and anywhere. Zip through paperwork with reusable templates, a built-in library of forms, and streamlined document workflows.

Your documents—secured

From data encryption to signer authentication, pdfFiller helps protect your data and comply with industry-leading security regulations, including HIPAA, SOC 2 Type II, PCI DSS, and others.

Edit PDFs with an all-in-one solution

Try easy-to-use tools for all your document management needs.
Upload your document

pdfFiller scores top ratings on review platforms

Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
High Performer - Summer 2025
Regional Leader - Summer 2025
I am a new user. It seems to provide all that I need to prepare my contracts. So far so good. But I am having a printing issue with my first contract.
Fequiere L
THIS APP IS AMAZING ! It has helped me countless times in my personal life and my business ! The template library is huge, I do wish there were more options when it comes to editing a pdf or a library form .
elizabeth y
What do you like best?
We have been using PDF filler since 2015 I believe. We love it! Its very user friendly and affordable.
What do you dislike?
The customization when sending e-signature documents is very limited.
Recommendations to others considering the product:
Go for it. Very easy to use and more affordable the other comparable solutions.
What problems are you solving with the product? What benefits have you realized?
great way to get documents signed digitally
Administrator in Consumer Electronics
It's good At first it can be a little overwhelming with all the options but once you get the hang of it is pretty essay. I really like that it saves all your files too, just in case.
Rose G.
It got the immediate job done but there were a few hiccups. I don't particularly like their way text is displayed in the larger fill-in fields. The form I was filling out was very complicated and required numerous references to a "Remarks" section at the end of the form because there was insufficient space with the numbered questions to put complete answers without overwriting onto the next numbered question. Consequently, the Remarks section was filled necessitating a separate attachment to contain all the remarks. In the remarks section, I cross-referenced to the numbered question for clarity, e.g. "Question 12(b)..." When I viewed the form on the screen the formatting looked fine but when it printed, the "Q" in the word Question was on one line and everything else "question 12(b) was on the next line. I would like to know how to avoid that issue in the future.
Stephen P
I am having some difficulties with the…formatting and printing I am having some difficulties with the form printing properly. The formatting does not transfer for printing to landscape and thus loses portions of text contained within the form.
Angela Schumacher
Communication & follow through on point. Only ever used Adobe in the past. Found this affordable option. It is fantastic. User friendly and an effective app. I applied for a rental with a heap of forms to fill out and now our family are living in it. I accidentally signed up for the 1year subscription. I contacted the help desk, and advised that I only wanted to use it during the trial period for a purpose and happy to pay for one month. Their reply communication was quick and on point. They summarised and actioned exactly what I requested. Only charged me $30 for the month, refunded the difference $114 and cancelled my future subscription. I would happily use this again. Thank you very much.
Dionie Sue Toka
New User but Impressed Just now starting to use, but am thoroughly impressed. I'm sure as I get used to the software it will increase to 5 stars!
Landa
This is great. We don't have a printer and with the Covid shutdown, we can't just run to friends house to print like we used to. Using PDFfiller, We don't have to print at all, we just fill out the form online and send it off completed.
Morana R
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Watch our PDF editor in action

Check out a quick video tutorial that shows how to edit any file into an editable PDF in three easy steps.

FAQs

If you can't find what you're looking for, please contact us anytime!
How do I Add Comments in PDFs? Open your document in the pdfFiller editor. Press the blue Add comment button. Click on the text or image you want to comment on. Type your comment in the text field. Click Comment. Click More to edit, reply or delete your comment.

Edit PDFs with an all-in-one solution

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