Getting an SMS verification code usually means bouncing between tabs. You open the signup form, switch to your number provider, copy the number, switch back, paste it, request the code, switch again to wait for it, copy the code, switch back one more time. Six tab switches for six digits.
The SMS Verification Chrome extension collapses that into one. Your temporary number lives in the toolbar, next to the page you are actually filling in.
Install the extension from the Chrome Web Store →
For a shorter overview with screenshots, see the extension page.
Why Put This in a Browser Extension?
Verification codes are time-boxed. Most expire in 5 to 10 minutes, and some services invalidate the code the moment you request a new one. Every tab switch is a chance to lose your place in the signup flow, and a signup flow that reloads has a habit of clearing the form you already filled in.
A toolbar popup sits on top of the current page. You never navigate away, so the form stays exactly where it was. The number is two clicks from the field you need to paste it into.
That matters most in the situations where people use virtual numbers heavily:
- Signing up for a service that demands a phone number you would rather not hand over. See what SMS verification actually is for the background on why so many sites now require one.
- Testing your own product's SMS flow as a developer or QA engineer, where you need a fresh number repeatedly and do not want a browser full of tabs.
- Verifying accounts across regions, where you need a number from a specific country rather than whatever your SIM happens to be.
Installing It
Open the Chrome Web Store listing and click Add to Chrome. It works in Chrome and in any Chromium-based browser that supports Manifest V3 extensions, including Edge, Brave and Arc.
One thing worth knowing up front: if you have Chrome's Enhanced Safe Browsing turned on, you may see a warning that the extension is "not trusted." That message is about publishing history, not about the code. Chrome applies it to recently published extensions until they have been in the store long enough to build a track record. If you are on Chrome's default Standard protection, you will not see it at all.
From Number to Code, Step by Step
1. Sign in. Click the toolbar icon. If you are already signed in to smsverification.app in the same browser, the extension picks up that session and you skip straight to the number picker. Otherwise sign in with your email and password, or use the Google option, which opens the website to complete the sign-in. It is the same account either way, with the same credit balance.
2. Choose a service. Search for Telegram, WhatsApp, Amazon, Discord or any of the several hundred other supported services. Type a few letters and the list narrows.
3. Choose a country. The list shows availability and price per country, sorted by popularity or by name. Countries near the top of the list generally have the highest success rates for that service, which is worth paying attention to. Our goes deeper on picking a country that the target service will actually accept.
4. Confirm. Before anything is charged you see the service, the country, the cost in credits and your current balance. Confirm and the number appears in the Active tab, with a 15-minute countdown.
5. Paste and wait. Copy the number with one click, paste it into the signup form, and request the code. You can close the popup here. When the code arrives you get a desktop notification with a Copy code button, so you can copy the code without even opening the extension again. The toolbar icon also shows a badge with the number of codes waiting for you.
What It Does While You Are Not Looking
This is the part that separates a useful extension from a bookmark with an icon.
A background service worker keeps checking your active orders on a timer. Fresh orders, the ones under three minutes old, are polled at full speed, since that is when most codes land. After that the interval stretches out to conserve resources. When the popup is open it takes over polling at a 20-second interval, and the background worker steps aside to avoid duplicate requests.
The practical result: you request a number, close the popup, carry on with whatever you were doing, and Chrome tells you when the code shows up.
Credits and Refunds
Pricing in the extension is identical to the website. There is no extension surcharge and no separate subscription.
Credits are only spent on numbers that work. If no code arrives before the 15-minute window closes, the order expires and your credits are returned automatically. You do not need to file anything or contact support.
You can also cancel an order yourself and get an immediate refund, though cancellation unlocks three minutes after the number is issued. That delay exists because upstream carriers need a moment to route the first message, and cancelling too early would throw away a code that was already in flight.
Running low mid-flow? The confirmation screen shows your balance against the cost and links straight to the if you need to top up.
Permissions, Explained
Extensions have a reputation problem, largely earned. So here is the full list of what this one requests and why each item is there.
| Permission | What it is for |
|---|---|
alarms | The timer that drives background polling for new codes |
storage | Your language, theme and the local list of your active orders |
notifications | The desktop alert when a verification code arrives |
offscreen | Writing to the clipboard, which a service worker cannot do on its own |
And one host permission: https://smsverification.app/*.
That single entry is the important one. The extension can talk to our API and nothing else. There are no content scripts, so it does not inject code into the pages you visit. It cannot read the tabs you have open, your browsing history, or the contents of any site other than ours. When you click "top up," it opens our pricing page in a new tab, which is the extent of its involvement with the rest of your browser.
Your verification codes are fetched from your own account over the same authenticated session the website uses. Nothing about your browsing is collected, and nothing is sent to a third party.
Extension or Website?
Both work, and they share one account and one balance. An order you start in the extension shows up on the website and vice versa.
| Extension | Website | |
|---|---|---|
| Request a number | Yes | Yes |
| Background alerts | Notification + badge | Tab must stay open |
| Stays over the form | Yes | Needs a tab switch |
| Order history | Recent orders | Full, with receipts |
| Buy credits | Opens the website | Yes |
| Invoices and settings | On the website | Yes |
Use the extension for the actual verification. Use the website for buying credits, digging through past orders, and everything account-related.
Small Things That Add Up
- Five languages. English, 简体中文, 繁體中文, 日本語 and Español, switchable in the extension's settings independently of your browser language.
- Light, dark and system themes, matched to the website's palette.
- One-click copy on both the number and the code, with visible confirmation so you know it landed.
- A history tab filtered by completed and cancelled, so you can check what a number was used for.
Getting Started
If you already have an account, installing takes about thirty seconds and you can keep your existing credits.
- Click the toolbar icon and sign in
- Pick a service and a country, and confirm
New here? Create an account and add credits on the first, then install. If you want the full picture of how virtual numbers work before you spend anything, start with the .
Running into a code that will not arrive? The covers the usual causes, and they are the same whether you are using the extension or the website.