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Based on 12500+ reviews
Last updated on Jan 9, 2026

Compare PDF with pdfFiller

To compare PDF documents effectively, you can use pdfFiller's powerful tools. This enables users to identify differences, make edits, and collaborate seamlessly on PDF files.

What is comparing PDF?

Comparing PDF documents involves analyzing two or more files to identify differences, including text changes, formatting, and images. This ensures version control and accuracy in your document workflow.

Why comparing PDF matters in PDF workflows?

Comparing PDFs is essential for maintaining document integrity, especially in collaborative environments. It helps teams track changes, validate updates, and confirm that revisions meet requirements.

Core capabilities of comparing PDF in pdfFiller

pdfFiller offers a variety of features for comparing PDFs, including side-by-side views, highlight differences tool, and collaborative commenting. These capabilities streamline the review process and enhance productivity.

Formatting text in comparing PDF: fonts, size, color, alignment

When comparing PDF documents, formatting is crucial. Users can modify the appearance of text such as fonts, size, color, and alignment to ensure clear visibility of changes. This is particularly helpful when emphasizing differences.

Erasing and redacting content through comparing PDF

pdfFiller allows users to erase or redact sensitive information in documents while making comparisons. This ensures that confidential data remains protected, maintaining compliance with privacy laws.

Applying styles: bold, italic, underline in comparing PDF

Users can enhance readability and emphasize important changes in compared PDFs by applying styles like bold, italic, and underline. This distinction helps stakeholders focus on key updates efficiently.

How to compare PDF step-by-step in pdfFiller

To effectively compare PDFs using pdfFiller, follow these steps:

  1. 1.
    Sign in to your pdfFiller account.
  2. 2.
    Upload the PDFs you want to compare.
  3. 3.
    Select the comparison tool from the editing options.
  4. 4.
    Review the highlighted differences side by side.
  5. 5.
    Take notes or add comments directly in the PDF.

Typical use-cases and industries applying comparing PDF

Comparing PDFs is widely used across various industries, including law, education, and business. Legal teams use it to check contract revisions, while educators may compare assignments for grading consistency.

Alternatives compared to pdfFiller's comparing PDF

While pdfFiller offers robust comparing features, alternatives like Adobe Acrobat, Nitro Pro, and Smallpdf also provide similar capabilities. Consider factors like user interface, pricing, and specific needs when making a selection.

Conclusion

Comparing PDF documents is vital for effective collaboration and document management. pdfFiller provides a comprehensive solution for comparing, editing, and managing PDFs seamlessly across devices, offering users the tools they need to work efficiently.

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.
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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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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.

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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.

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Excellent program! This service has brought back the professional ability to complete online forms in a typewritten format, as opposed to handwriting. A physician's handwriting is sometimes difficult to read, but with PDF filler, I am able to type the forms, print and have the physician sign where needed.
Dr. Michael M
But the important thing is they indicate that it is free to use online, but they demand that we subscribe to make a charge, then we do not have the link to cancel
M Santiago
What do you like best?
The ease of downloading our own files to manipulate the data, and/or recreate a document.
What do you dislike?
I think a better training tool/video would be beneficial for new and old users.
Recommendations to others considering the product:
Great product and easy to use.
What problems are you solving with the product? What benefits have you realized?
We are able to recreate documents and manipulate the information needed in order to prepare real estate documents at a much faster pace.
Administrator in Law Practice
Service only needed once I'm in my 89th year and only needed to send in the form once...I didn't know that I was subscribing to ongoing service. I live on Social Security supplemented by savings so I can't afford $96 per year for a service I only needed once. Thank you for the time I did need you.
Charles Meyer
I have tried various programs to change… I have tried various programs to change PDF's, and I find this one the easiest to use. It is much more intuitive than some of the others.
Brenda
I liked their services I liked their services, but didn't need them long term. I had thought that I had canceled my account right afterward, but still was charged when the trial period was up. I contacted them on a Sunday, expecting it to take a few days and be a nightmare. Even though it was the weekend they had it taken care of and refunded to me within a few hours! I would definitely use them again because of how trustworthy and understanding the staff was. Good job PDF Filler Team!
Corinne Beenfield
5* Customer Service I am very impressed with the customer service. When I was charged for a years subscription after my free trial, which I queried immediately, I received a full refund within the hour with no quibble.
Mrs. Sue Burton
Great Customer Service! I hadn't realized That I was getting billed, and for 9 months, I was paying for a service I only used once. Ryan helped me over the customer support, and helped me find the email I had used (it wasn't my main account), and helped me cancel the subscription for a full refund. He was super nice about it to, so I figured I'd review him.
Michael Mascarenhas
I was able to obtain documents that…I was unable to fill without this app. I was able to obtain documents that were not accessable without the pdf Filler app.
Mary
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