
RoxyBrowser introduces the RoxyChrome 155 core update, with native JPEG XL decoding, improved background media management, enhanced web app window controls, and expanded post-quantum cryptography support in WebCrypto. These changes provide a more efficient browsing foundation and broader web-platform capabilities for e-commerce, social media management, and advertising workflows.
RoxyChrome 155 Updates

1. Native JPEG XL Decoding for High-Quality Images
The 155 core adds native JPEG XL decoding, allowing the browser to display images in this format directly. JPEG XL supports both lossy and lossless compression, helping websites balance image quality and file size while preserving fine visual detail.
On websites that serve JPEG XL images, native decoding reduces reliance on additional decoding solutions. Combined with suitable encoding and compression settings, it can improve loading efficiency while maintaining high visual fidelity. Actual results depend on the source images, encoding settings, and network conditions.
Business Application: When reviewing product listings, advertising creatives, or branded visual content, teams can benefit from the balance of image quality and transfer efficiency offered by websites using JPEG XL. This supports detailed checks of product textures, image clarity, and creative presentation.
2. Automatic Media Pausing in Hidden iframes
Embedded media can continue running after it is hidden, consuming CPU and memory resources even when it is no longer visible. The 155 core improves this behavior by automatically pausing audio and video in hidden iframes when the applicable visibility and pausing conditions are met.
This helps reduce unnecessary playback and decoding activity, lowering background resource usage. The impact depends on the embedded content, media state, and number of concurrent tasks.
Business Application: Teams often keep multiple advertising landing pages, social media pages, and business dashboards open at once. Pausing eligible media in hidden iframes helps limit the accumulated overhead from embedded players, supporting more efficient operation across multiple pages and browser profiles.
3. Enhanced Window Controls for Web Apps
The 155 core expands window control capabilities for supported web apps, including maximizing, minimizing, and resizing windows. These capabilities give compatible applications more flexibility in managing their window state and delivering a desktop-like experience.
Availability depends on how the app runs, whether it implements the relevant features, and any applicable permissions. These capabilities do not give every ordinary web page unrestricted control over browser windows.
Business Application: For web apps that run in separate windows and implement these controls, teams can adapt their workspace more easily. They can maximize a dashboard to inspect a full report, resize an editing tool to fit alongside reference material, or minimize an application that is temporarily out of use.
4. Upgraded WebCrypto Support for Post-Quantum Cryptography
The 155 core upgrades WebCrypto’s post-quantum cryptography capabilities, providing support for web applications to adopt cryptographic schemes designed to withstand future quantum computing threats.
Post-quantum cryptography is intended to resist attacks from sufficiently powerful quantum computers that could compromise certain traditional public-key algorithms. Browser-provided cryptographic interfaces give developers a foundation for integrating these capabilities into suitable security workflows and planning for long-term data protection.
Business Application: Teams building web applications that handle sensitive business documents, encrypted collaboration, or data requiring long-term protection can evaluate post-quantum schemes alongside their protocols and server-side support. Effective protection depends on correct application integration and the overall security design; upgrading the browser core alone does not automatically give every website post-quantum protection.
A More Efficient Foundation for Daily Operations
RoxyChrome 155 improves image handling, background resource management, window interactions, and cryptographic capabilities. Native JPEG XL support and automatic pausing of hidden media help websites use resources more efficiently, while enhanced window controls and WebCrypto support extend what compatible web applications can offer.
Together, these improvements support everyday browsing, content review, and multitasking for teams working across multiple business pages and browser profiles.
Upgrade Information
For RoxyChrome 155 availability, supported configurations, and upgrade instructions, refer to the release information and update prompts in the RoxyBrowser client.