About
This site provides a browser-based CSV cleanup tool that helps turn messy phone columns into cleaner E.164 output for CRM imports, dialers, SMS tools, contact databases, and APIs.
What this tool is for
The goal is simple: clean a messy phone column in a CSV so the import is less likely to fail. Safe rows are normalized into E.164, while unclear rows are separated into a needs-review file instead of being guessed at.
How it works
The tool runs in the browser and is designed for practical import-prep work. It helps users:
- select the phone column in a CSV
- optionally map a country column or choose a default country
- normalize safe rows into E.164
- separate risky rows for manual review
- preserve the rest of the CSV structure
Privacy-first by design
Core CSV processing is designed to happen locally in the browser rather than through server-side CSV handling. That keeps the workflow fast, simple, and more privacy-friendly for users preparing import files.
Who runs this site
This site is operated by CALIFF PERFORMANCE MARKETING.
Start using the tool
You can return to the homepage to try the tool, read How It Works, learn what E.164 format means, or test the workflow with the sample CSV.