The feature is officially rolling out to all WhatsApp users in the most recent update of WhatsApp on both Android and iOS versions, reports GSMArena.
Previously, users had to make sure that their main smartphone was still connected to the internet before they could carry a conversation on your linked web browser.
When enabling this feature on your smartphone, you need to opt into the feature - labeled as still in "Beta," the report said.
Once enabled, you will be unlinked from all devices before re-linking to a new device. Once linked, it behaves pretty much the same way, except you will be able to chat regardless of whether your main smartphone is online or not, it added.
Plus, messages and calls are still end-to-end encrypted.
Now, linked devices will be able to receive and send messages up to 14 days after the main smartphone goes offline.
According to the report, this might be useful if you are in a situation where you've lost your smartphone temporarily and needed to stay in touch with folks through WhatsApp, or if your smartphone runs out of battery but you are near a linked computer.
Sadly, there's a limitation on iOS that doesn't allow you to delete messages or conversation threads from a linked device. The other limitation is that you still cannot link a tablet or secondary smartphone.
To check out the feature, update to the latest version of WhatsApp and tap the three-dot menu. Then tap "Linked devices" and enable the feature.