Chrome Extension
Install WAChecker
Check WhatsApp numbers through WhatsApp Web, review point-in-time results, and export the list from the browser extension. Your imported contact list is processed locally.
Free to Install
Local List Processing
Plan Terms Apply
Install in 3 Simple Steps
Get started in less than a minute
Installation FAQ
The Chrome extension is free to install. Available features and usage limits depend on the current plan shown in the extension or on the pricing page.
WAChecker works on Chrome and any Chromium-based browser, including Microsoft Edge, Brave, and Opera.
Imported contact lists are processed by the browser extension. Checking still communicates with WhatsApp Web, and paid activation may use the email address and activation code you provide. See the Security and Privacy pages for the full data flow.
You can install the extension without creating a WAChecker account. Some paid features require an email-bound activation code, and checking requires an active WhatsApp Web session.
After installing, open web.whatsapp.com, click the WAChecker icon, import a supported contact list, and start checking. Processing time depends on list size, pacing settings, and the WhatsApp Web session.
A result reflects the registration indicator returned by WhatsApp Web during the checking session. Statuses can change, malformed numbers can produce unusable results, and a registered result does not guarantee message delivery or engagement.
WAChecker accepts international numbers with a country calling code. Normalize each number before import; support depends on a valid international format and the status available through the current WhatsApp Web session.
A WhatsApp number filter cleans your prospect database by separating active WhatsApp users from inactive leads. By focusing your sales efforts exclusively on verified, active accounts, you reduce message consumption costs, increase open and conversion rates, and protect your sales team's outreach bandwidth.
WAChecker operates directly as a Chrome extension within your browser web interface, so there is no need to download heavy desktop software or configure complex third-party tools. Simply install the extension and check WhatsApp numbers online instantly.
The Chrome extension uses the active WhatsApp Web session to read the registration indicator available for each submitted number. It reports that observed status without claiming that the account will remain available later.
During verification, WAChecker categorizes your import list into valid WhatsApp accounts and invalid/unregistered numbers. You can easily filter out inactive entries and export only verified active contacts, keeping your CRM database clean and optimized for outreach.
This site documents the Chrome extension workflow. Contact the WAChecker team to discuss current integration options; do not assume a public API is available unless it is confirmed in the product documentation.
Checking registration status can help you remove not-found numbers, but it cannot establish consent or prevent reports. Message only recipients you are permitted to contact, provide relevant content, and follow WhatsApp's terms and applicable laws.