A lightweight browser-based tool that lets you upload a CSV, detect phone number country codes, and download a filtered file — fast, secure, and fully client-side.
Filter Phone Numbers by Country Instantly — Smart, Fast, and Secure!
Version 1.0.0 • Developed by AmitDas
CSV Country Filter lets you upload a CSV file, select the column containing phone numbers, automatically detect country calling codes, and export only the rows that match your selected country.
Everything runs in your browser — no backend, no uploads, no data sharing.
✅ Upload CSV files (supports large files)
✅ Detect international calling codes (E.164)
✅ Choose a country code to keep
✅ Download the filtered CSV instantly
✅ 100% client-side — private and secure
✅ Works offline after first load (if cached)
- Visit the live app → https://amitdas4321.github.io/CSV-Country-Filter/
- Upload your
.csvfile. - Select the column containing phone numbers.
- Click “Scan Country Codes.”
- Choose a country from the dropdown.
- Click “Download Filtered CSV.”
That’s it! 🎉 You’ll get a new CSV with only the selected country’s phone numbers.
- Built with HTML, CSS, and Vanilla JavaScript.
- Uses PapaParse for CSV parsing and exporting.
- Country code detection uses a pre-defined mapping of E.164 calling codes.
- Performs normalization to strip
+,00, and other non-digit symbols. - UI built with responsive, minimal CSS — works well on desktop and mobile.
Amit Das
- 🌐 Website: https://amitdas.site
- 🧑💻 GitHub: https://github.com/AmitDas4321
This project is licensed under the MIT License.
You are free to use, modify, and share it with credit.
- Works best if your phone numbers include country codes (
+91,+1, etc.). - Rows without a country code appear under “LOCAL.”
- Supports thousands of rows — all processed locally.
- No data is sent to any server.
⭐ If you found this project useful, please give it a star on GitHub!