Downloads

Both programs are free for anyone to use, for any purpose. They run on 64-bit Windows 10 and Windows 11, entirely on your own computer.

Your documents never leave your computer. Nothing is uploaded or stored anywhere else.

WCopyfind 6.0.2

Compares documents with each other to find the phrases they share.

WCopyfind-6.0.2-win-x64.zip · 1.4 MB · released September 24, 2026

Download Details

WRepeatfind 1.0.1

Finds the phrases one document, or a book, repeats.

WRepeatfind-1.0.1-win-x64.zip · 1.4 MB · released September 24, 2026

Download Details

Installing

Download the .zip file for the program you want.
Unzip it. In File Explorer, right-click the file and choose Extract All. You'll get the program, a README, and the license.
Double-click the program (WCopyfind.exe or WRepeatfind.exe). There's nothing to install. You can keep it anywhere, such as your Desktop or Documents folder.

If Windows says "Windows protected your PC", click More info and then Run anyway. Windows shows this warning for programs that haven't paid for a code-signing certificate, which free programs often haven't. The programs are open source: anyone can read exactly what they do on GitHub.

Sample documents

New to the programs? These small sets of documents show what each one finds in about a minute.

WCopyfind samples: six short student essays and an encyclopedia article, with some copying planted in them
WRepeatfind samples: a news article with accidental repetition, and a three-chapter story

Reading PDF files

Both programs read PDF files best with the help of pdftotext.exe, a free converter from the Xpdf command-line tools. Download the Windows version, find pdftotext.exe inside (in the bin64 folder), and put it in the same folder as WCopyfind or WRepeatfind. They'll use it automatically. PDFs that are only pictures of pages (scans) contain no text to read; run them through OCR software first.

Source code and older versions

Source code on GitHub, under the GNU General Public License, version 3 or later. Every release is tagged, back to WCopyfind 4.1.5.
WCopyfind 5.0.0, the previous version, for anyone who prefers it
All releases on GitHub
Older WCopyfind versions (2.7 through 4.1.5) and Copyfind, the command-line version

Mac and Linux

The programs are written for Windows. Mac and Linux users have run WCopyfind successfully with Wine, or in a Windows virtual machine.