Firefox 142 Brings Local Translation, CRLite Security, and AI Upgrades for Smarter Browsing

Mozilla has officially released Firefox 142, a feature-rich update that improves translation, privacy, and AI features on desktop and Android. With its emphasis on local processing, security-focused design, and improved browsing, this release is one of the largest updates to Firefox in months.

Local Translations for Chinese, Japanese, and Korean

One of the greatest features of Firefox 142 is the native support for Chinese, Japanese, and Korean translations. Both desktop and Android users can now translate web pages on the fly without needing cloud services. Unlike other browsers, which tend to send user data to faraway servers, Firefox performs all translation locally on the device, meaning that your browsing content never leaves your phone or computer.

This technique not only enhances data security and privacy but also facilitates offline translation a huge advantage for travelers, students, and professionals working in areas with limited connectivity. Mozilla has also optimized its machine learning models to make translations smooth, even on lower-end Android devices, reflecting its dedication to accessibility for everyone.

CRLite: On-Device Certificate Revocation for Safer, Faster Browsing

Security also receives a significant boost from the addition of CRLite, a new on-device certificate revocation system. Historically, browsers have used online checks to determine if a website's SSL certificate has been revoked, often resulting in delays and putting users at risk of third-party data requests.

With CRLite, Firefox 142 now keeps all revoked certificates on local storage. The daily updates only consume around 300 KB, making it both efficient and lightweight. This keeps the users always secure while allowing for faster page loading times and better privacy. Moreover, Mozilla designed CRLite so that it would be adaptable for other browsers and internet clients, promoting wider industry adoption of this secure standard.

Intelligent Link Previews and Local LLM Support

Firefox 142 also increases its AI strength. The stable release of Link Previews enables users to right-click on any link and immediately see a thumbnail, short summary, and estimated reading time. On supported devices in certain regions, Firefox takes this an extra step by providing AI-created summaries, giving users time and assisting in their decision on what to read.

Another interesting addition is the integration of support for the wllama API, which enables browser extensions to execute local large language models (LLMs) through transformer.js. This gives developers the ability to create AI-powered extensions without relying on external servers, maintaining users' interactions as private and responsive.

Improved Tracking Protection and Privacy Updates

Mozilla continues to enhance its privacy-first design with Enhanced Tracking Protection. In Firefox 142, the platform now features new exception lists that minimize site breakage without blocking the trackers that are invasive. This provides a more seamless browsing experience without compromising on security.

New Features for Everyday Browsing

Alongside these major updates, Firefox 142 introduces several smaller but impactful changes to improve usability and personalization:

• Topic-based stories on the New Tab page for U.S. users, offering curated content directly from the browser.

• Refined address bar search for faster and more accurate results.

• Sidebar extension removal for a cleaner interface.

• Better tab group controls, making multitasking easier.

For developers, the update also introduces earlier access to network headers, new Debugger overlay controls, and coverage of modern APIs such as Prioritized Task Scheduling and URLPattern APIs, enabling them to build quicker, more trustworthy web applications.

With Firefox 142, Mozilla remains the browser of choice for users who care about privacy, performance, and innovation. By bringing on-device translation, CRLite security, AI improvement, and daily usability enhancement, this release solidifies Firefox as a serious contender in a Chromium-dominant landscape.

As the internet continues to innovate, Mozilla is demonstrating that privacy-oriented innovation needn't be at the expense of speed or functionality and Firefox 142 is an unambiguous representation of that ethos.