Helium Browser in 2025: A Complete Review for Anonymous Browsing

What if a browser “light as helium” could hand you back control of the web: no telemetry, no ad sludge, no noise? We put that promise to the test. In this piece, you’ll find our sharp, no‑nonsense look at Helium: how it’s built, where it excels, where it stumbles, and whether it’s bold enough to replace your daily driver.

Helium is a minimal, privacy-first Chromium fork with a compact UI and open code — designed for users who value transparency and control. If you’re exploring secure browsing alternatives, you might also want to read our guide on the best antidetect browsers and learn how to remain anonymous on the internet for a deeper understanding of online privacy tools and strategies.

What Helium Browser Is and Who’s Behind It 

Helium is a Chromium‑based browser that strips out Google telemetry, ships with uBlock Origin enabled by default, and aims for a “no‑noise” experience. It’s built by a small team under the “imput” organization (known for Cobalt*), with fully open repositories for the core, platform packaging, and ancillary services.

FYI: Cobalt is a privacy-focused media saver from the team behind Helium. It lets you download videos, audio, and images without ads or trackers, and follows the same open-source, zero-telemetry philosophy.

Key Features of Helium Browser: Privacy and Performance Combined

Platforms, updates, and openness 

Helium currently targets desktop: macOS, Linux (AppImage), and Windows. macOS supports automatic updates; Windows builds exist but don’t auto‑update yet.

All build scripts and release artifacts are public, and Helium’s online services are open source and self‑hostable.

Privacy by default 

• No background network calls: on first launch Helium makes zero requests unless you act.
• Built‑in uBlock Origin: community lists block ads, trackers, and miners out of the box.
• Third‑party cookies are blocked; anti‑fingerprinting measures are applied, with room to harden via ungoogled‑chromium flags and stronger filter lists.
• Chrome Web Store anonymization: extension store traffic is proxied via Helium services so Google can’t correlate installs; services can be self‑hosted.

What is uBlock Origin? uBlock Origin (uBO) is a free, open-source browser extension created by Raymond Hill (gorhill). It’s designed to block ads, trackers, pop-ups, and other unwanted web content across websites. It works on browsers like Chrome, Firefox, Edge, Opera, and others.

Security and technical stack 

• Engine: Blink + V8 from Chromium for performance, standards compliance, and mature DevTools.
• HTTPS enforcement and Passkeys supported by default.
• Frequent upstream security patching; auto‑updates on macOS, options for Linux/Windows.
• No cloud sync or built‑in password manager by design: Helium encourages keeping secrets and history outside the browser. Use a dedicated manager like Bitwarden/1Password.

Interface and features 

• Compact layout: significantly reduced URL/tab bar height for more vertical content; smooth, non‑jittery UI.
• Split view: open two pages side‑by‑side; fast link copy (Cmd+Shift+C); install web apps as standalone without duplicating Chromium.
• Offline !bangs: jump directly to sites (e.g., !w for Wikipedia, !gh for GitHub, !chatgpt for an AI provider) resolved locally without leaking your query.

Extensions and MV2 

All Chromium extensions work by default, including Manifest V2, which Helium commits to support “as long as possible.” Practically, this keeps full uBlock Origin and many established add‑ons viable for now.

First Launch, Interface, and Privacy Settings

Now that we’ve covered Helium’s core features and platforms, let’s explore its interface and configuration options. From the first launch, the browser stands out with a minimalist design and a focus on transparency — every setting related to privacy and performance is clearly visible and easy to tweak.

During setup, Helium Browser shows a “Helium Services” screen that lets you choose how the browser connects to the internet. These options control privacy-related features like extension downloads through a proxy, automatic updates, uBlock Origin filter refreshes, and the !bangs quick search list. You can keep everything enabled for convenience or disable all connections for a completely offline setup.

The !bangs feature in Helium Browser (and inspired by DuckDuckGo) is a shortcut system that lets you search specific websites directly from the address bar — without first visiting a search engine.

For example:

• !w privacy → searches “privacy” on Wikipedia
• !gh helium browser → searches GitHub
• !yt open source browsers → searches YouTube

The key idea is transparency and control: Helium won’t contact any external servers unless you explicitly allow it. Advanced users can even route these services through their own self-hosted instance, ensuring maximum privacy and independence from third-party servers.

This screen highlights Helium’s philosophy — letting you choose your balance between privacy and convenience from the start.

FYI: Kagi is a premium, privacy-focused search engine that provides ad-free, fully customizable results. Kagi does not track users or sell data, but it requires a paid account after a trial. It’s designed for users who value transparency and are willing to support an ethical model financially.

The center “Add shortcut” (+) button allows you to pin your favorite sites to the start page — like bookmarks, but instantly accessible.

• You can give each shortcut a name and URL.
• Once added, it appears as a simple tile on the home screen for quick access.

Real-World Test: How Helium Browser Performs on Different Websites

To see how Helium performs in real-world privacy tests, I checked it across several trusted tools — CoverYourTracks (EFF), BrowserLeaks (WebRTC test), and WhoerIP.com. These services reveal how much identifying data a browser leaks to websites and trackers. Overall, Helium showed strong protection, confirming most of its privacy claims.

coveryourtracks.eff.org

The test reported “strong protection against web tracking”. Ads and invisible trackers were successfully blocked, meaning uBlock Origin and built-in privacy filters work as intended.

However, the browser still had a unique fingerprint, which is normal for most Chromium forks — full fingerprint masking is nearly impossible without heavily randomizing system data.

browserleaks.com

The results showed “No Leak”, confirming that Helium properly isolates WebRTC connections. Your real IP address isn’t exposed to sites using peer-to-peer communication (a common VPN or browser privacy leak).

whoerip.com

All WebRTC fields showed “No detection”, indicating excellent IP and network isolation. No local, public, or NAT IP addresses were visible to external scripts.

Helium delivers robust tracking and IP protection out of the box. While its fingerprint remains technically unique (like nearly all browsers), it blocks major vectors — ads, invisible trackers, and WebRTC leaks — showing that its privacy-first architecture actually works in practice.

Helium Browser Limitations

While Helium Browser delivers impressive privacy and performance, it’s still an evolving project with a few important caveats. As with any privacy-focused Chromium fork, there are trade-offs in compatibility, stability, and convenience that users should be aware of before switching.

Main drawbacks:

• Beta status: Helium is still in active development — expect occasional bugs or rough edges.
• Update frequency: Regular security patches depend on Chromium’s upstream pace; check that builds stay current.
• Manifest V2 support is temporary: The team plans to keep it “as long as possible,” but Chromium’s shift to MV3 may eventually limit extension compatibility.
• Limited DRM playback: Services like Netflix or Prime Video that require Widevine may not work properly.
• No cloud sync or built-in password manager: These features are intentionally removed for privacy reasons — you’ll need external tools like Bitwarden or 1Password.
• Not full fingerprinting immunity: Helium reduces tracking surface but can’t eliminate it completely; additional filters and flags may be needed.
• Potential add-on compatibility issues: Some Chrome extensions may require manual installation or fail if tightly bound to Google APIs.

Helium Browser isn’t a magic privacy shield, but a thoughtfully engineered alternative for users who understand its boundaries. If you’re comfortable managing your own sync, passwords, and extensions — it’s a strong, privacy-respecting choice.

Who Helium Browser Is For

Helium targets users who want Chromium’s power without Google’s ecosystem. It’s ideal for privacy-conscious professionals, developers, and researchers seeking a distraction-free workspace with full DevTools access. While casual users can enjoy it too, Helium appeals most to those who value open-source transparency and control over their browsing environment.

• Anyone wanting Chromium without Google and privacy defaults that aren’t hidden behind toggles.
• Developers who live in DevTools and need broad web‑API compatibility, without the nagging and telemetry.
• Minimalists who value speed, focus, and a compact UI, and who don’t rely on built‑in sync or an embedded password vault.

Helium Browser: Pros and Cons (Quick Overview)

✅ Pros	🚫 Cons
Built-in uBlock Origin that blocks ads, trackers, and third-party cookies	Browser still has a unique fingerprint (not fully anonymous)
No Google telemetry or background data collection	Beta version — minor bugs and unfinished features possible
Fully open-source and verified on GitHub	Requires some manual setup for advanced privacy options
Lightweight and fast — reduced CPU and RAM usage	No cloud sync or built-in password manager
Minimalist, distraction-free interface	Limited customization — no themes or homepage widgets
Split view mode for multitasking and comparisons	Limited DRM playback (Netflix, Prime Video, etc.)
Works with most Chromium extensions (MV2 and MV3)	Some extensions depending on Google APIs may not function properly
Strong WebRTC leak protection (tested, no leaks)	Fingerprinting protection is limited and requires user tuning
Supports self-hosting of Helium services for full control	Some features (like !bangs) require connecting to Helium servers
Multiple privacy-focused search engines (DuckDuckGo, Kagi, Qwant)	Kagi search requires a paid account
Regular Chromium security patches and auto-updates on macOS	Windows and Linux builds must be updated manually
Compatible with DevTools, WebRTC, and WebGPU	Manifest V2 support is temporary and depends on Chromium’s roadmap