Compare PDF files

Compare difference between PDF files, check which part of the file is changed.

Choose First PDF file

Choose Second PDF file

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How to Compare PDF files online

Upload

To compare two PDF files, upload the original and modified PDF files.

Starting the Comparison Process

Once the original and modified PDF files are uploaded, click the "Compare" button to start the comparison process. This process may take a few moments, depending on the size and complexity of your files.

Download

When the comparison process is complete, clicking the download button will download the result as a PDF file.

Upload

To compare two PDF files, upload the original and modified PDF files.

Starting the Comparison Process

Once the original and modified PDF files are uploaded, click the "Compare" button to start the comparison process. This process may take a few moments, depending on the size and complexity of your files.

Download

When the comparison process is complete, clicking the download button will download the result as a PDF file.

Information for Compare PDF

  • Document Changes: When you have multiple versions of a document, comparing PDF files helps you identify and understand the changes made between each version. This is especially useful for tracking changes, updates, and revisions, ensuring accuracy, and maintaining document integrity.
  • Legal and Compliance: In legal and compliance settings, comparing PDFs helps verify document authenticity and integrity. It allows you to detect any unauthorized alterations or discrepancies, ensuring that the files align with legal requirements and regulations.
  • Quality Assurance: Comparing PDFs is an effective way to perform quality assurance checks. By comparing a reference PDF with a final version, you can identify any discrepancies, errors, or formatting issues that may have occurred during the production process. This helps ensure the document's quality and adherence to standards.
  • Proofreading and Editing: Looking at PDFs side by side can help when checking for mistakes too. While fixing up a paper or changing it, you can see what's the same or different in versions. This makes it simple to find and fix errors in typing, grammar and spelling. You'll also notice if parts of the text or how it looks changed from one copy to another.
  • Content Verification: If you gets a PDF document from somewhere else or thinks something was changed in a file, it can help to check it against a copy you know is real. This is important for papers with private things like deals with money, papers showing what money a company has, or reports from a government office.

Frequently Asked Questions

Why would I need to compare PDF files?
Comparing PDF files is useful for various reasons, such as tracking changes between document versions, ensuring document integrity, performing quality assurance checks, facilitating collaboration and review, verifying content authenticity, and managing documents efficiently.
Can I compare scanned PDF documents?
Yes, you can compare scanned PDF documents. We focus on visual differences rather than text content.
Can I use this tool for Free?
Yes! PDFWind is a free online tool for you to convert, edit PDF files.
Do I need an account?
No. PDFWind is a free online tool. You can use it without an account.
Is installation required?
No! PDFWind is web application. You can run PDFWind on browser, but we are developing a desktop version.
Is safe to use this tool for senstive data?
We take data security and user privacy seriously. Our conversion process is secure, and we do not store any uploaded or converted files after the process is complete.
How long does it take to process a document?
It depends on the size of the document and other factors. We are always upgrading our processing server to make it faster.

Side-by-Side Comparison

Our PDF comparison tool displays the differences between two files on the result PDF file, making it easy for you to review the changes.

No Installation Required

Our PDF Comparator is a web based tool,simply open the browser and start using our tool. You don't need to install any program on your devices.

Secure

We take secrity seriously. All datas are transferred with SSL encryption, your files will be delete automatically within an hour from our server.

Free to Use

PDFWind is a free tool for you to Convert, Edit and Optimize your PDF File online.

Easy to use

Upload the original and modified PDF files, and the server will compare them automatically.

Cross Platform

You can use our PDF comparison tool on most of the devices, open the browser and you are ready to go.