Firefox 156 is the second release since Mozilla moved to a twice-monthly release schedule, and the blog OMG Ubuntu notes it has faster start-up times for its built-in PDF viewer and also lower CPU usage when viewing large JPEG images: In Firefox 156, the browser now uses libjpeg-turbo's IDCT scaling to reduce images during decoding, rather than loading a full-size image into memory and then shrinking it. Benchmarks from the bug report show up to 20Ã-- less memory used during very large image loading, and decoding is up to twice as fast. Since these speeds were quite fast already, there's no perceptible difference to users. Behind the scenes, it's more efficient. Firefox's built-in PDF viewer starts up to 45% faster in this release. The browser now loads the background PDF.js worker sooner, rather than launching it only when needed. Sponsored suggestions in the address bar are live for users in France, Germany and Italy (Ouais!, Juhu!, etc). These are already available in some other locales. Don't want them? Disable them via Settings > Search > Firefox Suggest > Suggestions from Sponsors. Besides that, the rest of this release is primarily bug fixes — worthwhile and welcome as always. And in about two weeks Firefox 157 will be released, reports PC World. "That update should add support for JPEG XL (JXL), a modern image format that offers the same quality as JPEG at a significantly smaller size. Although JPEG XL was launched in 2021, Safari is the only browser to support it yet. For a short period, Chrome also supported it, but that ended in 2022." Also, a recent Firefox blog post emphasized that it supports whatever level of AI engagement "is right for you... Because the only person telling you how much AI you need should be you." Opting out of upcoming and current AI features on your browser should not require endless navigation through multiple Settings pages. That's why Firefox offers an AI controls section within its General Settings panel. A single, easily located place where you can block current and future AI features and related pop-ups with the swipe of a toggle... For the many people who sit in the middle of the AI usage spectrum, we made sure you can opt in and out of specific features in line with your preferences. Capabilities like AI translations, image alt text in Firefox PDF viewer, tab group suggestions, and key points in link previews can all be individually switched on and off, ensuring you can enjoy such offerings on a case by case basis as it suits your needs... Smart Window is Firefox's most integrated AI experience, but that doesn't mean it compromises our commitment to choice, privacy, and transparency. Our newest window type, which we've been polishing and testing in beta, uses only the context you share with it to help you move work forward and across the finish line. When permitted by you, its built-in, AI-powered assistant can work directly with your open tabs and browsing history to connect the dots. This means comparing information, generating recommendations, summarizing pages, and planning projects without having to feed every crumb of context from your previous and current browsing activity each time you enter a new prompt. And if you want to block Google's AI Overviews, there's over 100 extensions to choose from.

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CompartilharA Mozilla acaba de dar um passo importante para o próximo ciclo do seu navegador. Com o Firefox 157 entrando no canal beta, usuários já …

O post Firefox 157 chega ao beta com novo design Nova e mudanças que podem transformar o navegador apareceu primeiro em Blog do Edivaldo - Informações e Notícias sobre Linux.

O teclado mecânico Firefox chamou atenção e esgotou rápido. Saiba tudo sobre essa peça para fãs do navegador Mozilla.

O post Teclado mecânico Firefox de $200 esgota rapidamente e deve voltar ao estoque apareceu primeiro em Blog do Edivaldo - Informações e Notícias sobre Linux.

O Firefox Nova traz um redesign moderno e fluido que chega na versão 157 no fim de setembro para todos.

O post Redesign Firefox Nova estreia para todos os usuários em setembro de 2026 apareceu primeiro em Blog do Edivaldo - Informações e Notícias sobre Linux.

Chinese retailer AliExpress has been caught fingerprinting visitors after one of the metrics—an outdated technique that measures inaudible sounds it sends to browsers—impeded a researcher's ability to use his bluetooth headphones.

Researcher Matthew Callaghan said he stumbled on the stealthy tracking by mistake. After loading the AliExpress homepage, audio from his phone stopped playing over his multipoint headphones, which accept connections from more than one device at a time. He set the headphones to play sounds from his phone except when his PC was producing audio. Each time he loaded AliExpress, the phone audio stopped. Each time he closed the tab the site was loaded into, the phone was once again audible.

Users can't hear it, but browsers can

While investigating the odd behavior, Callaghan said he found two highly obfuscated scripts. Together, they rendered a graph that analyzed the WebAudio readings of each visiting browser. This graph acted as an oscillator that measured Sawtooth waves, which are common in output from digital audio.

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Learn how to stop Firefox on your Mac or Windows PC from periodically showing little recommendation popups about features and updates.

Rizki Kelimutu:

Firefox is evolving with a refreshed design that makes the browser feel more modern, approachable, and consistent across desktop and mobile. The refresh also extends to Firefox’s voice and writing style, making product experience feel more human, direct, and unmistakably Firefox.

Via Jeff Johnson:

Nothing says “consistent” like making your large-screen keyboard & mouse UI exactly like your tiny touchscreen UI.

And nothing says “more human” like a manufactured voice and writing style.

rjacob:

Internally, we’ve been calling this work Project Nova, and today we’re excited to share a deeper look at what we’ve been building and where we’re heading next.

The goal of this work is to create a more cohesive foundation for Firefox: making the browser feel cleaner, warmer, faster, and more adaptable.

Some of the areas we’re working on include:

• Simpler navigation and a redesigned Settings experience
• Easier access to features like tab groups, split view, and vertical tabs
• The return of Compact Mode
• Refreshed visual updates across tabs, icons, spacing, and browser surfaces
• More customization options, including new themes and wallpapers

Previously:

• New Mozilla CEO
• Mozilla Changes Firefox Terms of Use
• Firefox at 20
• The Negative Impact of Mobile-First Web Design on Desktop

Update (2026-07-28): athomas (via Thomas Clement):

Starting today, you can try out the next design evolution of Firefox in Nightly.

It’s still Firefox, now with a more cohesive look and feel across tabs, menus, panels, and other browser surfaces. You’ll notice softer tab shapes, a warmer color palette, updated icons, and – after hearing from many of you – the return of Compact Mode and new theme options to make Firefox your own.

Still no AppleScript support.

Update (2026-08-04): Marcin Wichary:

Contra the previous post, just spotted this “Same settings, new look!” callout in Firefox, on a page I have never visited before, talking about a feature I have never used[…]

Learn how to turn off sponsored website shortcuts that Firefox inserts into your row of websites on the start page.

Já imaginou navegar pela web moderna com o Internet Explorer ou com o Netscape? Com o Reframe é possível, num projeto Open Source que combina o visual dos browsers clássicos com tecnologia moderna.

The post Reframe recria os browsers dos anos 90 e 2000 numa experiência adaptada aos tempos modernos appeared first on Tek Notícias.

An anonymous reader quotes a report from Linuxiac: Mozilla has released Firefox 152, the latest update to its popular open-source web browser, with updated settings, improved media controls, experimental JPEG XL support, and various platform-specific fixes for desktop and Android. A key update is the redesigned Firefox Settings page, which now features clearer groupings, improved navigation, and a more streamlined structure for easier customization. The release also expands built-in spellchecker support, adding dictionaries for Croatian, English (UK), Georgian, Persian, Slovenian, Tajik, Tamil, Tibetan, Turkish, Welsh, and Xhosa. [...] Importantly, Firefox now offers experimental support for JPEG XL, an image format with improved compression over WebP, JPEG, PNG, and GIF. Users can enable JPEG XL in the Firefox Labs panel within Settings.

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Esqueça os bloqueadores de sites chatos e as notificações que ignora ao fim de dois dias. O Cat Gatekeeper tem uma abordagem diferente, e muito mais fofa, para o doomscrolling. Trata-se de um gato laranja “gorducho” que invade o ecrã e não sai de lá até a pausa acabar.

The post Cat Gatekeeper: a extensão que manda um gato “gorducho” invadir o seu ecrã quando passa tempo a mais nas redes sociais appeared first on Tek Notícias.

The disbelief was palpable when Mozilla’s CTO last month declared that AI-assisted vulnerability detection meant “zero-days are numbered” and “defenders finally have a chance to win, decisively.” After all, it looked like part of an all-too-familiar pattern: Cherry-pick a handful of impressive AI-achieved results, leave out any of the fine print that might paint a more nuanced picture, and let the hype train roll on.

Mindful of the skepticism, Mozilla on Thursday provided a behind-the-scenes look into its use of Anthropic Mythos—an AI model for identifying software vulnerabilities—to ferret out 271 Firefox security flaws over two months. In a post, Mozilla engineers said the finally ready-for-prime-time breakthrough they achieved was primarily the result of two things: (1) improvement in the models themselves and (2) Mozilla’s development of a custom “harness” that supported Mythos as it analyzed Firefox source code.

"Almost no false positives"

The engineers said their earlier brushes with AI-assisted vulnerability detection were fraught with “unwanted slop.” Typically, someone would prompt a model to analyze a block of code. The model would then produce plausible-reading bug reports, and often at unprecedented scales. Invariably, however, when human developers further investigated, they’d find a large percentage of the details had been hallucinated. The humans would then need to invest significant work handling the vulnerability reports the old-fashioned way.

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