So I've been working on this little project called DupeLens. It's basically a Java CLI that finds duplicate files in your folders and generates an HTML report.
Nothing crazy, just something I thought would be useful.
Why I made it
I wanted a simple way to check which files were duplicated without worrying about accidentally deleting something important.
So I built one myself.
How it works
It's pretty straightforward.
First, it checks file sizes. If two files have different sizes, there's no reason to compare them further.
For files with matching sizes, it uses SHA-256 to check whether their contents are identical.
Once it's done, it shows the duplicates in the terminal. You can also generate an HTML report if you want something easier to look through.
And that's about it. It doesn't delete, move, or modify your files.
Wanna try it?
You'll need Java 17 or newer.
Download the JAR from GitHub and run:
java -jar dupelens.jar ./your-folder --html report.html
Then just open report.html in your browser.
What's next?
Just released v1.0.0, so it's still pretty early.
I'm thinking about adding exclusion patterns and JSON output, but I'm open to other ideas too.
If anyone wants to check out the code or suggest improvements, that'd be cool.
GitHub: https://github.com/illusionoftalha/dupelens
It's open-source and MIT-licensed.
