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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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've only done two documents, but so far I think it is a swell program! I have one more trustee that I'd like to add, will that cost more? We use the program for a charitable trust and we are unpaid. Thanks a lot, no matter what the answer is! I really like the program. MP
Myron G. Phillips, D
2014-09-04
On the first day of use, I thought I had lost all the data I entered. I received help via a chat and verified my data was intact. This is going to be an extremely useful product for me as a consultant.
Joe W
2016-11-01
Everything was easy to mange till I got to printing & I get an error message. I could not print from your Site. I used my computer system to print.printing
Omaima A
2019-01-12
App doesnt work the same as using it on a computer. On the computer is easy and simple. Ive tried the app and seems to cant work it like on the computer such as tap on it erase or add , high light , or erase. Im using apple iphone Thank you
JAY
2019-04-26
Web based PDF signing tool I use PDFfiller for signing purchase orders or sending proposals for clients to digitally sign. It's great because users can sign documents in their browser without needing to download anything. PDFfiller's editing tools leave much to the imagination. I don't use the editing features as I can accomplish what I need with other programs.
Dave R.
2019-09-28
Great tool for conversions Converting PDFs to spread sheets can be time consuming. This software is very functional, and eliminates the hassle. I like being able to convert my PDFs into the proper documents for further use. Most PDFs in their original form are totally unusable. I use this function to convert the document into a spread sheet. Great time saver. Nothing so far. Seems to be easy to use and very convenient.
Tami D.
2019-07-24
@KARA is the BEST!! @KARA is the BEST!!! She my our chat simple and easy. Reassured me as a customer. and didn’t embarrass me for cancelling due to my circumstances. Thank you thank you thank you Kara!!!!!!
CJ
2021-02-17
I am more than satisfied with the… I am more than satisfied with the functions of this application. As a student I find this platform to be very useful. I plan on keeping my subscription
Bryan Pelaez
2021-01-31
I love the way you can use the PDFfiller I love the way you can use the PDFfiller. It helps me with documents that I have to fill out for different programs that I'm in for my granddaughter because she is Autistic.
Shirley A.
2020-05-01

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.
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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.
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Once you're done reviewing and editing the compared documents, you can save them or download them to your computer.
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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.

#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