- Firefox lets you summarize web pages just by shaking your mobile device on Android and iOS
- The tool uses Mistral-Small artificial intelligence via the Mozilla cloud
- For now, it only summarizes websites in English and with fewer than 5.000 words on Android.
- Privacy and data control are central to this new feature
Mozilla has begun rolling out a Firefox feature on Android that summarizes web pages simply by shaking the phone , a feature that has been available on iPhones for some time. With this move, the browser aims to make AI-generated summaries more accessible to users when faced with long texts.
The idea is simple: avoid having to read entire articles when you're only looking for the key information . With a quick gesture or a button in the menu, the browser condenses the page content into a few paragraphs, which is especially useful when browsing the web on your phone, whether in Spain, the rest of Europe, or any other market where Firefox is available.
How does the option to summarize websites by shaking your mobile phone work?
The new feature, known as "Shake to Summarize ," is integrated directly into the Firefox browser for Android. When browsing any compatible page, simply shaking the smartphone will generate an automatic summary of the content displayed on the screen.
In a matter of seconds, a short text appears with the article's main points , eliminating the need to scroll for minutes or read paragraph by paragraph. The system aims to be as immediate as possible, so the summary is almost as quick as checking a notification.
In addition to the physical gesture, Mozilla has incorporated a more traditional alternative through the menu . Within the browser's three-dot icon, the user can tap the "Resume Page" option, which is practical in situations where shaking the phone is inconvenient or could be annoying, for example, on public transport or in the office.
This dual method of activating the feature—by moving the phone or tapping a button—aims to accommodate different usage preferences and accessibility needs . This way, each person can choose how they feel most comfortable accessing the summary, without relying solely on a physical gesture.
What are the limitations of page summaries on Android?
Although the feature is now available on Android devices, it comes with certain restrictions in this first phase . For now, the tool is only available for web pages written in English and with a text of no more than 5.000 words, a threshold designed to maintain fast response times and efficient processing.
If a user tries to activate the summary on a site with longer content or in another language , the option will not appear in the menu and will not respond to the shake gesture. According to Mozilla, this is a temporary limitation that should be eased as the system matures.
In the case of iOS, where the feature was launched earlier, Firefox has already gone a step further: the shake-to-summary feature supports several languages , including German, French, Spanish, Portuguese, Italian, and Japanese. This evolution on iPhone and iPad offers a clue as to where the next steps will be taken on Android.
Mozilla has announced that support for more languages will come to Android in future updates , which will likely open the door to Spanish summaries for users in Spain and other Spanish-speaking countries in Europe and the Americas. No specific timeline has been given, but the company has confirmed that expanding language support is part of its roadmap.
The artificial intelligence behind the function
To generate the summaries, Firefox uses an artificial intelligence system based on the Mistral-Small model . This AI engine was selected, according to Mozilla, for its balance of speed, efficiency, and alignment with the principles of an open internet—a point the company has emphasized repeatedly in recent years.
The process works like this: the page text is sent to the Mozilla cloud , where the Mistral-Small model analyzes it, identifies the main ideas, and builds a concise summary. This reduced version of the content is then returned to the browser and displayed to the user, all within the shortest possible timeframe.
Because it's an automated system, there's no human intervention in generating these summaries , making the process almost instantaneous and applicable to large volumes of pages. However, as with any AI tool , the quality of the result can vary depending on the structure of the original text or how well the website's content is organized.
Mozilla emphasizes that this approach aims to facilitate access to information without completely replacing traditional reading . For those who need details, nuances, or very specific data, consulting the full article remains the recommended option, while the summary serves as a first glance or as a reference when time is limited.
Privacy and data processing when summarizing websites
One of the points Mozilla emphasizes most is the protection of privacy when using the "shake to summarize" feature . The company explains that the processed text travels through its own cloud infrastructure, without being shared with third parties outside the service needed to generate the summary.
According to information provided by the browser, data is handled in a way that does not compromise the user's identity , maintaining the line of defense of privacy that Firefox has tried to reinforce in recent years with tracking blockers, protection against digital fingerprinting and other similar measures.
Mozilla also emphasizes that the choice of the Mistral-Small model is partly due to security requirements and compliance with data protection standards , especially relevant in territories like the European Union, where regulatory compliance is stricter. While not providing full technical details, the company insists that the feature was designed with privacy as its core principle.
In practice, this means that users don't need to create a separate account or provide additional personal information to use the page summarization feature. The system integrates seamlessly with Firefox, so all you need is an updated browser and to visit a compatible website.
Another piece in Firefox's innovation strategy
The arrival of the feature to summarize websites by shaking your mobile phone is part of a broader set of changes in Firefox , with which Mozilla is trying to keep the browser competitive against other offerings that are also incorporating AI tools and usability improvements.
Alongside this new feature, the organization has recently introduced improvements to the browser's local backup , which is now also available on Linux, bringing the backup capabilities closer to those already enjoyed by Windows users. These types of features aim to provide greater control over the data stored on the computer.
Changes have also been made to the home page and new tab page , including new wallpapers, additional widgets, and tweaks to shortcuts for faster access to frequently visited sites and integrated services. All of these improvements aim to make the home page experience more customizable and visually appealing.
In terms of security, Firefox has strengthened its protection against fingerprinting , a form of tracking that attempts to identify users based on their device and browser settings. Furthermore, it's now possible to delete all data from a private session without closing the window, adding an extra layer of control over the information left on your computer.
With this set of changes, Mozilla aims to position Firefox as a browser that combines smart features, respect for privacy, and advanced configuration options . The ability to generate summaries using AI is another piece of this puzzle, targeting those who consume a large portion of their information on their mobile devices.
The addition of the shake-to-summarize feature to Android, combined with the experience already gained on iOS and the progressive expansion of language support, paints a picture where Firefox reinforces its commitment to faster and more manageable browsing of long texts without compromising its privacy messages . As the tool expands to more languages and regions, its potential usefulness will grow for both those who check the news daily and those who simply want a quick overview of a long document on their smartphone.
