{"id":148014,"date":"2025-11-11T23:11:55","date_gmt":"2025-11-11T21:11:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-firefox-145-s-rasshirennoj-zashhitoj-ot-skrytoj-identifikaczii"},"modified":"2026-02-26T20:20:26","modified_gmt":"2026-02-26T18:20:26","slug":"reliz-firefox-145-s-rasshirennoj-zashhitoj-ot-skrytoj-identifikaczii","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/news\/reliz-firefox-145-s-rasshirennoj-zashhitoj-ot-skrytoj-identifikaczii","title":{"rendered":"Firefox 145 release with enhanced protection against hidden tracking","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"
The release of the web browser Firefox 145 has occurred, and updates for previous Long-Term Support branches \u2014 140.5.0 and 115.30.0 \u2014 have been formed. The Firefox 146 branch has entered beta testing, with a release scheduled for December 9. <\/p>\n
Key innovations in Firefox 145 (1, 2, 3): <\/p>\n
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Support for 32-bit Linux systems has been discontinued. It is noted that maintaining Firefox on 32-bit platforms is becoming increasingly difficult and unreliable, especially since support for 32-bit builds has already been discontinued in most Linux distributions. Users of 32-bit Linux distributions are advised to switch to 64-bit operating systems. For those who cannot promptly update their distribution, the ESR branch of Firefox 140 can be used, with security updates provided at least until September of the following year.\n
Button, tab, address bar, and input field rounding has been enhanced.
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The built-in PDF viewer now supports adding, editing, and deleting comments\/annotations. A separate sidebar has been added for navigating and viewing existing comments. While adding a comment, you can choose a color for highlighting it on the background.
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Hovering over the label of a collapsed tab group now displays a list of tabs in the group, allowing quick access to the desired tab without needing to expand the entire group first.
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It's now possible to manage saved passwords directly from the sidebar without needing to open the password manager in a separate window or tab.
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A new collection of background images for the new tab page has been introduced, available in both light and dark mode versions.
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A new option has been added to the tab settings that allows placing the tab created when opening links from external applications next to the currently active tab, rather than at the end of the tab list.
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A new item, 'Copy Link to Highlight', has been added to the context menu, allowing users to generate a link that points to a selected piece of text on the page. Links to the chosen text will have the format 'https:\/\/www.example.com#:~:text=mas\u043a\u0430'.\n
The capabilities of the Fingerprinting Protection mode, used when Enhanced Tracking Protection (ETP, Enhanced Tracking Protection => Strict) is enabled or when opening pages in private browsing mode, have been expanded. It is noted that the changes made nearly halve the effectiveness of hidden identification methods compared to the previously existing protection.\n
To enhance protection, constant values have been returned for parameters that may serve as additional traits for identification, and access to equipment details, such as the number of simultaneous touches supported by the touchpad and the number of processor cores, has been restricted. Noise substitution has been implemented when attempting to read from image scripts generated via the canvas element. Rendering text on the page with locally installed custom fonts has been disabled.
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In the strict Enhanced Tracking Protection (ETP) mode, protection against tracking via redirects (Bounce Tracking Protection) is enabled by default. The Bounce Tracking Protection mechanism allows the detection of activity specific to tracking through redirects and periodically clears cookies and locally stored data used for tracking. Unlike the 'Cookie Purging' mode, which is based on a list of known trackers, the clearing is performed based on heuristics that help identify new tracking sites by analyzing behavior post-redirect.\n
The essence of tracking through redirects is that the tracker code first redirects the user to its own site and then forwards them to the target page, allowing the tracker to save cookies and data in local storage tied to its site. By retaining data after moving to another site, it circumvents previously implemented methods in the browser to block cross-site operations \u2014 since the intermediate page opens outside the context of the other site, tracking cookies can be freely set on that page. <\/p>\n
Support for Matroska containers (for codecs AVC, HEVC, VP8, VP9, AV1, AAC, Opus, and Vorbis) has been added.\n
In the built-in machine translation system, the convenience of translating between languages with different character direction has been improved. The Zstandard algorithm has been employed to compress locally installed models, reducing the size of downloaded data and saving space on the local storage.\n
In configurations without installed extensions, clicking the panel button for accessing extensions now shows an explanation of the benefits of extensions with a link to the extensions catalog.\n
JavaScript has implemented the method Atomics.waitAsync(), which offers an asynchronous version of the Atomics.wait() method, allowing it to wait for the location of the SharedArrayBuffer similarly to Atomics.wait(), but returning a Promise.\n
Support has been added for the HTTP headers Integrity-Policy and Integrity-Policy-Report-Only, which can be used to verify the integrity of loaded scripts.\n
The CSS property text-autospace has been implemented, performing automatic adjustments to the spacing between characters from different writing systems (for example, between Latin characters and hieroglyphs).\n
Support for the 'math' font family has been implemented in the CSS property font-family for the correct rendering of mathematical expressions.\n
The ToggleEvent API has added a source property that contains an Element object representing the control element that initiated the state change that generated the Toggle event. For instance, when a user clicks on a '
![\"Firefox](\"\/wp-content\/uploads\/2025\/11\/f8481c4a5662cf52bfc1144b45fc0c41.png\")
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