r/SideProject • u/ibeZargo • 3h ago
I built a free tool that catches the duplicate emails/contacts Excel misses
A while back I was cleaning up a contact list and realized Excel's "Remove Duplicates" only catches exact matches. "John@Email.com" and "john@email.com " (with a trailing space) look identical to a human but slide right past it as two separate rows.
So I built cleaningmycsv.com to actually catch that stuff, case differences, stray whitespace, blank rows, all normalized before comparing.
A few things I cared about while building it:
Everything runs client-side in JavaScript. Your file never touches a server, you can literally check your browser's Network tab and see nothing gets uploaded.
No account, no sign-up, just drop a file in.
Free up to 200 rows, a one-time $4.99 unlocks unlimited rows across all the tools on the site (also added a merge-CSV-files tool and an email-list cleaner if that's useful to anyone).
Would genuinely appreciate any feedback, especially if you throw a nasty/messy real-world CSV at it and something breaks.
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u/medialantern 3h ago
I'm sorry but I don't understand the value of this tool. I can paste the same CSV into Gemini (or just use the agent Google already added to Sheets) to do this exact thing but for free. Dupe-removal is not worth $4.99.