- Firefox 139 experimentally integrates an AI-powered search engine (Perplexity), testing more interactive and accurate responses.
- Key translation improvements: Full extension pages can now be translated and pasted PNG images with transparency can be better handled.
- Expanded customization with wallpaper options and color selection for the new tab page, as well as new background categories.
- Advancements for developers and power users: improved file upload performance, new web APIs, experimental features, and improved privacy and security.
The arrival of Firefox 139 mark one new stage in the evolution of this browser, maintaining its focus on balancing functionality, security, and user experience. While not a revolutionary release, it does include several relevant developments affecting both those who use the browser daily and developers and more advanced users.
The update process has already started And some users may have to wait a few hours to receive it automatically, although there is always the option to force the update or download the new version from the official website.
In this installment, Mozilla focuses its efforts on optimizing aspects Key features such as smart search, advanced translation, visual customization, and the integration of experimental features powered by artificial intelligence, all without neglecting the usual performance and security improvements.
New smart searches with Perplexity: AI in the address bar
Perhaps the most innovative thing about Firefox 139 be the experimental integration of Perplexity, an AI-powered search engine right in the address bar. By activating search mode, the browser offers the option to try a search. “new way to search in Firefox”, with more conversational results and direct answers accompanied by sourcesThis proposal, still in the testing phase, is presented as an alternative to traditional search engines and is designed to reduce link overload, helping users find faster and more accurate answers.
It is not yet known what percentage of users will have access to this feature. nor for how long, as this depends on regional testing and acceptance among users. It may also require acceptance of new terms of use before being activated.
Improved translation and new visual options
In version 139, Page translation improves significantlyFirefox now allows you to fully translate the content of extension pages (URLs of the type moz-extension://), satisfying a recurring request from the user community. In addition, the handling of pasted PNG images in the browser has been improved to maintain transparency, which makes it easier to work with images in different workflows.
Another of the highlighted functions is the advanced customization of the new tab pageUsers can now select any image they want as a background, choose theme colors to further personalize their experience, and even explore new categories of pre-made backgrounds that Mozilla has added. These options are enabled progressively through the Settings menu in Firefox Labs, so it may take longer for some users to access them.
Performance, privacy, and experimental features
In addition to the visible changes, Firefox 139 optimizes speed when uploading files over HTTP/3 connections, especially in high-speed or varying latency situations. This translates into Greater fluidity and efficiency when loading content, benefiting both home and professional users in demanding network environments.
Regarding privacy, the arrival of the Service Workers in private browsing mode allows for more sophisticated and secure use, reinforcing the platform's commitment to personal data protection. As usual, bug fixes and security patches, fundamental aspects to maintain the stability and integrity of the browser.
Technical advances for developers and current limitations
The new version also introduces new features designed for web development. Support for timers is added to Workers, the WebAuthn largeBlob extension, and the attribute hidden=until-found, which makes it easier to locate hidden content on pages. In addition, the method requestClose() for element <dialog> allows more advanced control of web dialogs.
The native editor for elements contenteditable y designMode has been updated to handle whitespace more consistently with other modern browsers, achieving better results in online content editing and layout. Although It is no longer possible to automatically import passwords and payment methods directly from Chrome., the option to import passwords via CSV files is maintained, ensuring flexibility in managing personal data.
Firefox 139 consolidates its position as an update that, without being disruptive, adds new features powered by artificial intelligence, expands customization possibilities, strengthens privacy protection, and responds to community requests. The update, already available, invites you to explore a browser that's increasingly flexible and adapted to today's web challenges.
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