Compare PDF 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 May 25, 2026

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Users Most Likely To Recommend - Summer 2025
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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+
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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 have just been informed by my college that I can't use this format. After paying for it and working with it for months, they prefer I use a format with expandable boxes for each indicator. This is a user friendly method but my only difficulty as been that the only information I can add to the PDF is what fits in the fixed boxes. This would be a suggestion in the formatting of this PDF.
aconant
2014-11-28
Found out about this on Google; did not want to pay to get Adobe Acrobat! It's easy to use to input text, and then after I figured out I had to register for$/month etc. I could Print and Save As. Wonderful Resource, thank you.
Anonymous Customer
2015-06-14
Home Care case Manager adapting documents for a special case, could not have done it without this service, HIPAA compliance a must, PDFfiller making my charting possible!! Thank you!
Heather R
2018-10-06
For someone that has always had terrible hand writing this app is a blessing. Works great, easy to upload forms, fill them in and then save and print.
Ken K
2018-10-30
What do you like best?
Great support team with quick responses.
What do you dislike?
Don't dislike anything at this time. It is user friendly for what I need to complete.
What problems are you solving with the product? What benefits have you realized?
Great tool to add and delete from forms.
Carol Mincheff
2018-01-02
easiest way to fill forms! I like it and I recommend it to anyone who works with Forms that cannot be edited using another softwares. In my job we need to complete a LOT of forms (we are a law firm specialized in tax and corporate law so we need to complete a lot of forms that come in PDF format) and some of them doesn´t allow us to make any edit in the regular PDF program so PDFFiller is our salvation. It is super easy to use and it allows you to edit the entire document using only this software. You can add text or even delete parts that you don´t need. It is a software that doesn´t require any effort to understand because everything is as simple as upload the document, make the changes and save as pdf or print the document. I use it every day and I find it very complete for the things that I need. You are not able to use it in several computers, so if by mistake you open your session on another computer you may loose your work.
Verified Reviewer
2018-08-09
The program is easy to use for searching for forms or updating my own documents. The program is easy to understand and use. It is intuitive for anyone used to editing documents or creating forms. I would prefer better opportunities to edit changes while in the same document. It can be challenging to erase and re-enter information.
Jennifer M.
2017-11-14
I forgot to cancel my subscription and… I forgot to cancel my subscription and got charged but my man Kurt came to rescue and flawslessly handle the support. In no time I was refunded even tho the mistake was on my side. I didnt need pdfFiller now but in the future. Thats the solution I would pick with no doubt.
Enzo Carasso
2022-09-22
I filled out forms before purchasing app and thought it was saved. After I purchased the app I could not find my document. I texed with a customer service rep, he was no help and quit the communication.
Douglas T
2020-09-02

Compare PDF Feature

The Compare PDF feature helps you easily identify differences between two PDF documents. This tool streamlines your workflow and enhances your productivity by allowing you to quickly spot changes without manual effort.

Key Features

Side-by-side comparison of two PDF files
Highlighting of added, removed, or modified text
User-friendly interface for easy navigation
Export comparison results to various formats
Ability to compare documents of different versions

Use Cases and Benefits

Reviewing contract revisions with clarity
Identifying changes in project documents efficiently
Ensuring compliance by comparing regulatory documents
Simplifying collaboration by tracking edits between team members
Saving time in document review processes

With the Compare PDF feature, you can tackle issues related to document discrepancies effectively. By providing a visual comparison, you eliminate confusion and reduce the risk of oversight. This tool empowers you to work smarter and keep your projects on track.

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 Compare PDF Feature in pdfFiller

The Compare PDF feature in pdfFiller allows you to easily compare two PDF documents and identify any differences between them. Follow these steps to use this feature:

01
Log in to your pdfFiller account. If you don't have an account, you can sign up for free.
02
Once you're logged in, click on the 'Compare PDF' option in the main menu.
03
Upload the two PDF documents you want to compare. You can either drag and drop the files or click on the 'Upload' button to select them from your computer.
04
After the documents are uploaded, pdfFiller will automatically compare them and highlight any differences. You can view the differences side by side or in a single document.
05
To navigate through the differences, you can use the arrow buttons or the navigation panel on the left side of the screen.
06
If you want to make changes to the compared documents, you can use the editing tools provided by pdfFiller. You can add text, images, signatures, and more.
07
Once you're done reviewing and editing the compared documents, you can save them or download them to your computer.
08
If you need to compare more than two PDF documents, you can repeat the process for each pair of documents.

Using the Compare PDF feature in pdfFiller is a convenient way to quickly identify differences between PDF documents. It saves you time and effort by automating the comparison process and providing you with the necessary tools to make any necessary changes. Start using the Compare PDF feature today and streamline your document comparison workflow!

Did you know?

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Copy leaks plagiarism checker allows you to compare PDF files against one another and get an accurate report of how original the text is. You can compare 2 PDF documents side by side, and similar text is highlighted in both the documents. The tool is able to identify three kinds of similarity, find match types of similar, and text meaning.

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
Open the document you wish to edit. In the toolbar at the top of the screen, click the “Review” tab. ... Click the “Track Changes” button to enable Track Changes. ... Open the drop-down menu next to the “Track Changes” button. ... Select “All Markup”. ... Click the “Show Markup” drop-down menu.

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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