Clean a phone list in your browser
Deduplicate, normalise to E.164, drop malformed numbers and split by country — on a list of any size.
Your file never leaves this page. Everything runs in your browser: no upload,
no server, no account. Open your developer tools, watch the network tab, and load a file —
you will see no request. That is the same principle the desktop app is built on.
Drop a CSV or .txt file here
or click to choose · nothing is uploaded
Rows read
0
Clean, E.164
0
Duplicates removed
0
Malformed
0
Country unknown
0
Took
—
By country
What this page cannot tell you
Deduplication, E.164 formatting and malformed-number detection need no numbering data, which is why they can run here. Line type, carrier and whether a block was ever allocated need the full numbering-plan database — 1.8 million blocks — and that runs in the desktop app, also entirely on your own machine. On a typical bought or scraped list that second pass is where most of the dead weight is found.
Try it free on 50,000 numbers