Aside Browser now makes New Tabs appear instantly without wait and address bar flicker

Aside AI has always marketed itself with speed as a main selling point. Now, they’re focusing on new tabs. On most browsers, opening a new tab results in a short pause while the page loads. Dora Lee, the co-founder and CTO of Aside AI, has improved this, and the team has fixed the problem.

They pointed out how most browsers have this short delay through a post on X. “Somehow, we normalized waiting for a new tab to load…” is what the official account posted.

It’s also confirmed that the improvements are now live. In a follow-up reply to the main post, the account said that it’s now “Deployed.”

The post also includes a clip of the Aside browser on a Mac. The sidebar on the left shows the active tabs, and the person in the clip rapidly creates multiple new tabs. They appear in the sidebar immediately, without any delay. Typing something in the search box, clicking around, opening the Task Manager, etc don’t affect the speed. There’s no flash or jump as the new tabs open.

How did they do it? Aside’s fix uses an internal extension, and it’s not exactly a built-in Chromium page. The Chromium page used to cause a delay and visible flicker in the address bar, so they solved it inside “bromium.”

That’s the internal name for the Aside browser running on the Chromium engine. The feature used to fix it was Chromium’s Prerender2. It lets the browser quietly load a page in the background before you ask for it. Then, it swaps instantly when you open the tab. It’s “immediately interactive,” so you can start typing or clicking right away, the moment the tab appears.

Since the change is already live, you can try it on the Aside browser right now. Users can notice the improvements in speed whenever they open a new tab.

Dora Lee also answered some questions from users in the replies; here’s a summary:

1. The Windows version of the browser is now officially available.
2. The browser uses Brave’s adblock-rust engine for ad blocking. We detailed this ad blocker in previous coverage.
3. The location where vertical tabs open can be customized in settings.
4. Finally, he also took feedback regarding the stability/bugs situation on Windows and overall animations.

To those who missed it, the Windows version of the Aside browser recently launched with near-total feature parity with macOS. More on that here.

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