Can we rebuild Bulk WA Number Checker & Validator & Search & lookup | WASBB.COM?
Build a Chrome extension like Bulk WA Number Checker & Validator & Search & lookup | WASBB.COM — a Bulk WA Number Checker & Validator & Search & lookup | WASBB.COM alternative you own.
If you want to build your own Bulk WA Number Checker & Validator & Search & lookup | WASBB.COM, you can do it quickly. This Chrome extension alternative automates WhatsApp Web checks right from your browser, giving you full control over verification speeds, privacy, and list exports without recurring fees.
The listing record
| Name | Bulk WA Number Checker & Validator & Search & lookup | WASBB.COM |
| Store rating | 4.8 / 5 · 820 ratings |
| Users | 6K+ |
| Store listing | Chrome Web Store ↗ |
| Analyzed | 20 September 2026 |
What Bulk WA Number Checker & Validator & Search & lookup | WASBB.COM does
Effortlessly verify WhatsApp numbers and streamline your communication process. Whether you’re looking to connect with potential clients or keep your contact list updated, this powerful tool makes it easy to check phone numbers in bulk and identify active WhatsApp users. Perfect for businesses seeking to optimize marketing strategies and reach real customers. With WA Number Checker, you can instantly verify large lists of phone numbers and remove invalid or inactive contacts, ensuring that your messages always reach the right audience. Our tool supports global phone numbers and offers fast, reliable results, helping you save time and maximize efficiency. Why choose WhatsApp Number Checker? Bulk Verification: Check and validate hundreds or thousands of numbers in a single click. Accurate Results: Quickly distinguish active wa users from inactive numbers.
What the store says
★ 4.8 from 820 ratings · 6K users
Pulled live from the Chrome Web Store listing at analysis time.
Can PlugThis rebuild Bulk WA Number Checker & Validator & Search & lookup | WASBB.COM?
“It's just looping phone numbers through WhatsApp Web's internal lookup API in your active session.”
This tool operates by automating queries against an open WhatsApp Web tab using your logged-in session. It checks if numbers are registered on WhatsApp by querying the web client's internal endpoints, which a straightforward content script and popup can easily do. There are no proprietary databases involved—it queries WhatsApp in real time.
Why build your own Bulk WA Number Checker & Validator & Search & lookup | WASBB.COM alternative
- Zero risk of leaking customer phone number lists to third-party servers
- No artificial daily batch limits or paywalls on bulk exports
- Custom delay and throttle controls to prevent account bans
- Direct CSV export formatted exactly for your CRM workflow
What it costs vs what you'd save
The original: The listing does not specify standard subscription tiers or limits.
Your version: Building your own eliminates the risk of sending your private client contact lists through third-party servers while avoiding arbitrary daily check limits.
The starter prompt
Build a Chrome extension that validates phone numbers on WhatsApp Web. It should include a popup to upload a CSV of phone numbers, inject a content script into an open WhatsApp Web tab to check if each number has an active account, and export the validated list with statuses (Active/Inactive) to CSV with customizable delays between requests.Build it with PlugThis →
Features you could add that Bulk WA Number Checker & Validator & Search & lookup | WASBB.COM doesn't have
Because you own the code, these are a follow-up prompt away — tap one to add it to the prompt above.
- CSV Importer & Exporter — Upload a list of raw numbers, filter out invalid rows, and export verified active contacts.
- Smart Jitter & Throttling — Add random delays between checks to emulate human behavior and protect your WhatsApp account.
Questions about rebuilding Bulk WA Number Checker & Validator & Search & lookup | WASBB.COM
Do I need an official WhatsApp Business API key?
No, this extension works directly on top of your existing WhatsApp Web session using content scripts to check if an account exists.
Will checking numbers get my WhatsApp account banned?
Checking thousands of numbers rapidly can trigger spam flags. Building your own tool lets you configure randomized delays and batch intervals to keep your session safe.
Does this require a backend database?
No, all lookups and CSV exports can run locally in your browser, keeping your customer data completely private.
How to build it yourself
- 1Open PlugThis and start a new build
Head to PlugThis and start a new Chrome extension. You're describing a Bulk WA Number Checker & Validator & Search & lookup | WASBB.COM alternative you'll own outright — no store subscription.
- 2Paste the starter prompt
Paste the starter prompt above. PlugThis expands it into a full Manifest V3 extension — popup, content scripts, and service worker included.
- 3Review, tweak, and load it
Review the generated code, ask for tweaks in plain English, then download and load the unpacked extension in Chrome to try it.
- 4Publish it (optional)
When you're happy, publish your Bulk WA Number Checker & Validator & Search & lookup | WASBB.COM alternative to the Chrome Web Store — or just keep it as a private tool for yourself.
Build your own Bulk WA Number Checker & Validator & Search & lookup | WASBB.COM alternative
Describe it in plain English. PlugThis generates the full Manifest V3 Chrome extension in about two minutes.
Build it with PlugThis →More teardowns
We run the same teardown on any Chrome extension — what it does, whether a self-built alternative holds up, and the prompt to make one. Tear down another extension, or see the extensions we've actually rebuilt and filmed — real build times, real prompts, real recordings.
Sources & verification
- All facts pulled live from the Chrome Web Store listing ↗.
- The verdict is drafted by the PlugThis teardown engine — an opinion about buildability, not affiliation with Bulk WA Number Checker & Validator & Search & lookup | WASBB.COM.
- Written by PlugThis, which builds Chrome extensions from plain-English prompts.
Published and last updated 20 September 2026. Figures reflect the Chrome Web Store listing on that date and may have changed since.