Tool
WhatsApp number list cleaner and formatter
Paste numbers from a spreadsheet or your phone contacts and the tool formats each one with the country code, removes duplicates, flags the ones that cannot be valid and gives you a CSV with a phone column you can upload to a ClickCard campaign.
Best fit
Preparing a campaign list, Cleaning an old customer sheet, Merging lists from different sources
Updated
2026-10-24
Status
Approved
Clean and format a number list
Paste your numbers and press Clean list.
Not valid
Your numbers are processed in your browser and are not uploaded anywhere.
Why it helps
Use this page to understand the practical business value before setting up a ClickCard profile.
Fewer failed messages from mistyped numbers.
No duplicate messages to the same person.
Runs in your browser: the numbers are not uploaded.
Included features
Country code selection
Duplicate removal
Invalid number reasons
Copy or download CSV
Use cases
Preparing a campaign list
Cleaning an old customer sheet
Merging lists from different sources
Recommended setup
- Paste the numbers, one per line or separated by commas.
- Choose the default country code.
- Review the invalid list and download the clean CSV.
Quality tips
Cleaning checks the format only; it cannot tell whether a number is on WhatsApp or whether the person agreed to be messaged.
Remove anyone who has asked to stop.
Frequently asked questions
No. The tool works in your browser and does not send the list anywhere.
No. It checks the format. Numbers that are not on WhatsApp show as failed when a campaign is sent.
Related ClickCard resources
Run WhatsApp bulk messaging and a chatbot from one dashboard
Connect your own WhatsApp Business number, send approved template campaigns, answer customers in a shared inbox and let a chatbot handle the routine questions.
Create your free account