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February 12, 2023
5
min read

Pixel Pushing vs DOM rendering: what's the difference?

Pixel Pushing vs DOM rendering: what's the difference?

At the heart of Remote Browser Isolation (RBI) technology are two distinct rendering methods: Pixel Pushing and DOM Isolation.

While serving the same overall purpose of isolating the browser from the user environment to enhance security, these approaches fundamentally differ in how they work and what their implications are. Given the significant growth of cybersecurity in today's digital landscape, it is critical for businesses to fully understand these methods. In this article, we compare these two approaches according to key criteria in order to help inform your technological choice.

Pixel Pushing vs DOM Isolation

RBI Comparison Table
Criteria Pixel Pushing DOM Isolation
Security Fully isolated via server-side rendering. Zero active content is transmitted to the end user, providing robust threat containment against malware, drive-by downloads, and zero-day exploits. Relies on DOM sanitization and parsing accuracy. Risk of bypass if malicious payloads evade detection — effectiveness depends on the completeness of the threat signature database.
User Transparency Consistent user experience, but potential latency depending on the user's available bandwidth — the full page is streamed as a rendered pixel stream. Near-native browsing experience, though some page elements may not render correctly due to DOM reconstruction.
Scalability Horizontally scalable with additional compute resources, but server load increases significantly with concurrent user sessions. Lower resource footprint overall, but complex or heavy web applications may still require significant processing capacity.

Unlike most traditional RBI solutions that rely on reconstructing the Document Object Model (DOM) within the local browser, with a residual risk of malicious code execution, Pixel Pushing rendering technology offers a more secure approach. All of the code — whether it's HTML, CSS, JavaScript, JavaScript, JavaScript, Cookies, or even document viewing — is executed in a remote environment, isolated from the user's local network. The final result is then transmitted in the form of a video stream offering a significant advantage in terms of security and user transparency.

Comparing Pixel Pushing vs DOM Isolation

VirtualBrowser has specialized in pixel rendering with its innovative “Fast Pixel Rendering” solution, guaranteeing an unparalleled and smooth browsing experience. Not only does this approach enhance security, but it also maintains a seamless user experience while ensuring optimal scalability.

Contact us to learn more about our technology and to get a demonstration.

RBI
Pixel Pushing
DOM
Mathieu Lafon
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