{"id":153509,"date":"2026-01-13T23:11:55","date_gmt":"2026-01-13T21:11:55","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-firefox-147"},"modified":"2026-01-13T23:11:55","modified_gmt":"2026-01-13T21:11:55","slug":"reliz-firefox-147","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/reliz-firefox-147","title":{"rendered":"Vyd\u00e1n\u00ed Firefox 147","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Byl vyd\u00e1n webov\u00fd prohl\u00ed\u017ee\u010d Firefox 147 a byly vytvo\u0159eny aktualizace star\u0161\u00edch verz\u00ed s dlouhodobou podporou \u2014 140.7.0 a 115.32.0. Na f\u00e1zi beta testov\u00e1n\u00ed byla p\u0159evedena v\u011btev Firefox 148, jej\u00ed\u017e vyd\u00e1n\u00ed je napl\u00e1nov\u00e1no na 24. \u00fanora.     <\/p>\n<p>Hlavn\u00ed novinky ve Firefoxu 147 (1, 2, 3):  <\/p>\n<ul>\n<li class=\"l\"> Byla p\u0159id\u00e1na podpora specifikace Freedesktop.org XDG Base Directory a mo\u017enost vyu\u017eit\u00ed adres\u00e1\u0159e \u201e~\/.config\/mozilla\u201c pro ukl\u00e1d\u00e1n\u00ed profil\u016f, dopl\u0148k\u016f, nastaven\u00ed a intern\u00edch datab\u00e1z\u00ed. Podpora um\u00edst\u011bn\u00ed dat ve star\u00e9m adres\u00e1\u0159i \u201e~\/.mozilla\u201c je zachov\u00e1na jako volba, kterou lze aktivovat p\u0159i spu\u0161t\u011bn\u00ed s prom\u011bnnou prost\u0159ed\u00ed \u201eMOZ_LEGACY_HOME=1\u201c.\n<li class=\"l\"> Byla p\u0159id\u00e1na podpora mechanismu \u201eCompression Dictionary Transport\u201c (RFC 9842), kter\u00fd umo\u017e\u0148uje zmen\u0161it velikost dat p\u0159en\u00e1\u0161en\u00fdch mezi klientem a <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/server\/dts-prohoster\/\"   title=\"serverem\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3115\">serverem<\/a>, d\u00edky pou\u017eit\u00ed kompresn\u00edch algoritm\u016f Zstandard (Content-Encoding: dcz) a Brotli (Content-Encoding: dcb) v kombinaci se zhu\u0161t\u011bn\u00edm typick\u00fdch struktur pomoc\u00ed slovn\u00edk\u016f. K dispozici jsou dva sc\u00e9n\u00e1\u0159e pro pou\u017eit\u00ed Compression Dictionary Transport \u2014 komprese obsahu podle p\u0159edem poskytnut\u00fdch slovn\u00edk\u016f serverem a vyu\u017eit\u00ed d\u0159\u00edve p\u0159edan\u00e9ho obsahu jako slovn\u00edku pro kompresi jeho nov\u00e9 verze (delta-komprese, p\u0159i kter\u00e9 se p\u0159en\u00e1\u0161ej\u00ed pouze zm\u011bny v porovn\u00e1n\u00ed s existuj\u00edc\u00ed verz\u00ed).\n<p>Nap\u0159\u00edklad p\u0159i po\u017eadavku \u201eGET \/index.html\u201c server m\u016f\u017ee b\u011bhem odpov\u011bdi poskytnout informace o dostupnosti slovn\u00edku, vr\u00e1t\u00ed cestu k n\u011bmu v z\u00e1hlav\u00ed \u201eLink: ; rel=\u2018compression-dictionary\u2019\u201c. P\u0159i na\u010d\u00edt\u00e1n\u00ed slovn\u00edku klientem \u201e\u2026\/dict\u201c server poskytne informace o jeho pou\u017eit\u00ed pro HTML soubory, nastav\u00ed z\u00e1hlav\u00ed \u201eUse-As-Dictionary: match=\u2018\/*html\u2019\u201c. P\u0159i dal\u0161\u00edm po\u017eadavku na html zdroj, nap\u0159\u00edklad \u201eGET \/index2.html\u201c, klient uvede informace o tom, \u017ee m\u00e1 slovn\u00edk prost\u0159ednictv\u00edm z\u00e1hlav\u00ed \u201eAvailable-Dictionary: hash_slovn\u00edku\u2018\u201c. Pokud m\u00e1 server na sv\u00e9 stran\u011b slovn\u00edk s t\u00edmto hashem, vr\u00e1t\u00ed obsah index2.html, zkomprimovan\u00fd pomoc\u00ed tohoto slovn\u00edku.    <\/p>\n<p>Pro delta-kompresi r\u016fzn\u00fdch verz\u00ed JavaScriptov\u00fdch soubor\u016f v reakci na po\u017eadavek &#171;GET \/app.v1.js&#187; m\u016f\u017ee server nastavit hlavi\u010dku &#8216;Use-As-Dictionary: match=&#187;\/app*js&#187;&#8216;, kter\u00e1 informuje, \u017ee vr\u00e1cen\u00fd obsah lze d\u00e1le pou\u017e\u00edt jako slovn\u00edk pro cesty &#171;\/app*js&#187;. P\u0159i n\u00e1sleduj\u00edc\u00edm po\u017eadavku na soubor, kter\u00fd odpov\u00edd\u00e1 t\u00e9to masce, nap\u0159\u00edklad &#171;GET \/app.v2.js&#187;, klient ode\u0161le hash st\u00e1vaj\u00edc\u00edho slovn\u00edku prost\u0159ednictv\u00edm hlavi\u010dky &#171;Available-Dictionary:&#187;, a server vr\u00e1t\u00ed pouze zm\u011bny mezi soubory app.v1.js a app.v2.js.      <\/p>\n<li class=\"l\"> Byla p\u0159id\u00e1na str\u00e1nka about:keyboard pro nastaven\u00ed kl\u00e1vesov\u00fdch zkratek a p\u0159edefinov\u00e1n\u00ed st\u00e1vaj\u00edc\u00edch kl\u00e1vesov\u00fdch zkratek, nap\u0159\u00edklad pro nastaven\u00ed obl\u00edben\u011bj\u0161\u00edch variant nebo vylou\u010den\u00ed konflikt\u016f s jin\u00fdmi programy.    <center><img decoding=\"async\" alt=\"Vyd\u00e1n\u00ed Firefox 147\" src=\"\/wp-content\/uploads\/2026\/01\/f0c6c38fd79cb5eab26459adbef3cf03.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>\n<li class=\"l\"> Bylo optimalizov\u00e1no p\u0159ehr\u00e1v\u00e1n\u00ed videa s vyu\u017eit\u00edm hardwarov\u00e9ho urychlen\u00ed dek\u00f3dov\u00e1n\u00ed na GPU AMD. Na syst\u00e9mech s GPU AMD se nyn\u00ed hardwarov\u011b dek\u00f3dovan\u00e9 video p\u0159ehr\u00e1v\u00e1 bez dal\u0161\u00edho kop\u00edrov\u00e1n\u00ed dat (zero-copy re\u017eim), jak to bylo d\u0159\u00edve realizov\u00e1no u syst\u00e9m\u016f s GPU Intel a NVIDIA.\n<li class=\"l\"> Pro verzi 5 byla aktualizov\u00e1na implementace protokolu Safe Browsing, pou\u017e\u00edvan\u00e9ho pro kontrolu URL na p\u0159\u00edtomnost v seznamech nebezpe\u010dn\u00fdch zdroj\u016f (phishingov\u00e9 weby, str\u00e1nky s malwarem atd.), poskytovan\u00fdch Googlem. Nov\u00e1 verze protokolu umo\u017e\u0148uje stahovat blokovac\u00ed seznamy pro pou\u017eit\u00ed v lok\u00e1ln\u00edm syst\u00e9mu (DB s prefixy hash\u016f SHA256 probl\u00e9mov\u00fdch URL), kter\u00e9 se nyn\u00ed aplikuj\u00ed ve Firefoxu.\n<li class=\"l\"> P\u0159id\u00e1na mo\u017enost automatick\u00e9ho pokra\u010dov\u00e1n\u00ed p\u0159ehr\u00e1v\u00e1n\u00ed videa v re\u017eimu &#171;obr\u00e1zek v obr\u00e1zku&#187; p\u0159i p\u0159epnut\u00ed na jinou kartu.\n<li class=\"l\"> V re\u017eimu zv\u00fd\u0161en\u00e9 ochrany p\u0159ed sledov\u00e1n\u00edm pohyb\u016f (ETP, Enhanced Tracking Protection =&gt; Strict) je ve v\u00fdchoz\u00edm nastaven\u00ed povoleno pou\u017eit\u00ed specifikace LNA (Local Network Access) pro omezen\u00ed p\u0159\u00edstup\u016f k lok\u00e1ln\u00edmu syst\u00e9mu (loopback, 127.0.0.0\/8) nebo vnit\u0159n\u00ed s\u00edti (192.168.0.0\/16, 10.0.0.0\/8 atd.) p\u0159i interakci s ve\u0159ejn\u00fdmi weby. P\u0159\u00edstup k vnit\u0159n\u00edm zdroj\u016fm vyu\u017e\u00edvaj\u00ed \u00fato\u010dn\u00edci k prov\u00e1d\u011bn\u00ed CSRF \u00fatok\u016f na routery, p\u0159\u00edstupov\u00e9 body, tisk\u00e1rny, podnikov\u00e9 webov\u00e9 rozhran\u00ed a dal\u0161\u00ed za\u0159\u00edzen\u00ed a slu\u017eby, kter\u00e9 p\u0159ij\u00edmaj\u00ed po\u017eadavky pouze z lok\u00e1ln\u00ed s\u00edt\u011b. Krom\u011b toho m\u016f\u017ee skenov\u00e1n\u00ed vnit\u0159n\u00edch zdroj\u016f slou\u017eit k nep\u0159\u00edm\u00e9 identifikaci nebo shroma\u017e\u010fov\u00e1n\u00ed informac\u00ed o lok\u00e1ln\u00ed s\u00edti.\n<li class=\"l\"> Na syst\u00e9mech Linux s GNOME a kompozitn\u00edm serverem Mutter byl vy\u0159e\u0161en probl\u00e9m s neostrou vizualizac\u00ed obsahu p\u0159i pou\u017eit\u00ed zlomkov\u00e9ho m\u011b\u0159\u00edtka.\n<li class=\"l\"> Na po\u010d\u00edta\u010d\u00edch Apple s \u010dipy Apple Silicon a OS macOS byla zavedena podpora API WebGPU.\n<li class=\"l\"> Prioritization of language selection in the HTTP header Accept-Language (q-parameters) has been synchronized with values set by other browsers, resolving some portability issues. For instance, the second language is now assigned a priority of q=0.9 instead of q=0.5, and the priority decreases by 0.1 for each subsequent language.\n<li class=\"l\"> The ICU library has been updated to version 78 with support for Unicode 17 and an update of locale data.\n<li class=\"l\"> Service Workers now allow the use of ESM (ECMAScript Module) JavaScript modules, imported and exported via the import and export statements.\n<li class=\"l\"> Byla p\u0159id\u00e1na podpora specifikace CSS Module Scripts, kter\u00e1 umo\u017e\u0148uje pou\u017e\u00edvat syst\u00e9m modul\u016f JavaScript pro import CSS zdroj\u016f. Nap\u0159\u00edklad: import styles from &#171;.\/styles.css&#187; with { type: &#171;css&#187; };\n<li class=\"l\"> V pseudo-elementu &#171;::marker&#187;, kter\u00fd umo\u017e\u0148uje upravit parametry \u010d\u00edsel a te\u010dek pro seznamy v bloc\u00edch &lt;ul&gt; a &lt;ol&gt;, je povoleno pou\u017e\u00edvat CSS vlastnosti &#171;counter-*&#187; a &#171;quotes&#187;.\n<li class=\"l\"> Support for the Brotli compression format has been added to the CompressionStream and DecompressionStream APIs.\n<li class=\"l\"> V API View Transitions, pou\u017e\u00edvan\u00e9m pro vytv\u00e1\u0159en\u00ed anima\u010dn\u00edch efekt\u016f p\u0159i p\u0159ep\u00edn\u00e1n\u00ed mezi r\u016fzn\u00fdmi stavy DOM, byla p\u0159id\u00e1na vlastnost &#171;type&#187;, kter\u00e1 obsahuje pole s typy p\u0159echod\u016f. Tak\u00e9 byl p\u0159id\u00e1n odpov\u00eddaj\u00edc\u00ed CSS selektor &#171;:active-view-transition-type&#187; a vlastnost document.activeViewTransition, kter\u00e1 vrac\u00ed instanci aktivn\u00edho objektu ViewTransition pro dokument.\n<li class=\"l\"> A set of CSS properties has been enabled to control the display of elements linked to the location of other elements (CSS Anchor Positioning) without using JavaScript, such as for attaching to elements of popovers that appear similarly to tooltips.\n<li class=\"l\"> Byla implementov\u00e1na specifikace \u201eStorage Access Headers\u201c, kter\u00e1 definuje \u017e\u00e1dostov\u00fd hlavi\u010dkov\u00fd parametr \u201eSec-Fetch-Storage-Access\u201c a odpov\u011bdn\u00ed hlavi\u010dkov\u00fd parametr \u201eActivate-Storage-Access\u201c pro p\u0159\u00edstup k extern\u00edm soubor\u016fm cookie bez vyvol\u00e1n\u00ed metody document.requestStorageAccess(). Server m\u016f\u017ee po\u017e\u00e1dat o p\u0159\u00edstup k soubor\u016fm cookie prost\u0159ednictv\u00edm hlavi\u010dky \u201eActivate-Storage-Access\u201c, a ta bude odesl\u00e1na klientem, pokud d\u0159\u00edve u\u017eivatel potvrdil poskytnut\u00ed p\u0159\u00edstupu ke skladov\u00e1n\u00ed soubor\u016f cookie prost\u0159ednictv\u00edm API Storage Access.\n<li class=\"l\"> Do CSS vlastnosti \u201eroot-font-relative\u201c byla p\u0159id\u00e1na podpora relativn\u00edch jednotek m\u011b\u0159en\u00ed rcap, rch, rex a ric.\n<li class=\"l\"> Byl implementov\u00e1n API Navigation, kter\u00fd umo\u017e\u0148uje webov\u00fdm aplikac\u00edm zachyt\u00e1vat naviga\u010dn\u00ed operace v okn\u011b, iniciovat p\u0159echody a analyzovat historii akc\u00ed s aplikac\u00ed. API poskytuje alternativu k vlastnostem window.history a window.location, optimalizovanou pro jednospage webov\u00e9 aplikace.\n<li class=\"l\"> V n\u00e1stroj\u00edch pro webov\u00e9 v\u00fdvoj\u00e1\u0159e v panelu s pravidly CSS byla zavedena podpora \u00faprav a p\u0159id\u00e1v\u00e1n\u00ed selektor\u016f pseudoelement\u016f. Do rozhran\u00ed pro prohl\u00ed\u017een\u00ed dat ve form\u00e1tu JSON byla p\u0159id\u00e1na tla\u010d\u00edtko pro import zdroje do syst\u00e9mu profilov\u00e1n\u00ed (Firefox Profiler) pro ur\u010den\u00ed informac\u00ed o jeho velikosti. V panelech pro inspekci HTML prvk\u016f a animac\u00ed je zaji\u0161t\u011bno zobrazen\u00ed pseudoelement\u016f View Transitions. V panelu s pravidly CSS byl zaveden p\u0159ehled pravidel @position-try, pou\u017e\u00edvan\u00fdch pro \u0159\u00edzen\u00ed zobrazen\u00ed prvk\u016f p\u0159ipojen\u00fdch k um\u00edst\u011bn\u00ed jin\u00fdch prvk\u016f (CSS Anchor Positioning).\n<li class=\"l\"> Ve verzi Firefox pro Android byla p\u0159id\u00e1na <a href=\"https:\/\/prohoster.info\/cs\/zhashchita-ot-ddos\/\"  data-wpil-monitor-id=\"1\">ochrana p\u0159ed \u00fatoky<\/a> p\u0159es extern\u00ed kan\u00e1ly, jako je Spectre, pou\u017e\u00edvan\u00fd k obch\u00e1zen\u00ed izolace mezi weby. D\u0159\u00edve byla takov\u00e1 ochrana dostupn\u00e1 pouze ve verz\u00edch pro desktopov\u00e9 syst\u00e9my.      <\/ul>\n<p>Krom\u011b novinek a oprav chyb ve Firefox 147 bylo odstran\u011bno 23 zranitelnost\u00ed. 10 zranitelnost\u00ed bylo zp\u016fsobeno probl\u00e9my s pam\u011bt\u00ed, jako jsou p\u0159ete\u010den\u00ed buffer\u016f a p\u0159\u00edstup k ji\u017e uvoln\u011bn\u00fdm oblastem pam\u011bti. Potenci\u00e1ln\u011b mohou tyto probl\u00e9my v\u00e9st k proveden\u00ed k\u00f3du \u00fato\u010dn\u00edka p\u0159i otev\u0159en\u00ed speci\u00e1ln\u011b upraven\u00fdch str\u00e1nek. 3 zranitelnosti umo\u017e\u0148uj\u00ed obej\u00edt sandboxovou izolaci kv\u016fli nespr\u00e1vn\u00e9 kontrole hranic a celkov\u00e9mu p\u0159ete\u010den\u00ed v komponent\u011b pro pr\u00e1ci s grafikou.<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64601\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 web-\u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430 Firefox 147 \u0438 \u0441\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u044b \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0448\u043b\u044b\u0445 \u0432\u0435\u0442\u043e\u043a \u0441 \u0434\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u043c \u0441\u0440\u043e\u043a\u043e\u043c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 &#8212; 140.7.0 \u0438 115.32.0. \u041d\u0430 \u0441\u0442\u0430\u0434\u0438\u044e \u0431\u0435\u0442\u0430-\u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u0435\u0440\u0435\u0432\u0435\u0434\u0435\u043d\u0430 \u0432\u0435\u0442\u043a\u0430 Firefox 148, \u0440\u0435\u043b\u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043d\u0430\u043c\u0435\u0447\u0435\u043d \u043d\u0430 24 \u0444\u0435\u0432\u0440\u0430\u043b\u044f. \u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u043d\u043e\u0432\u0448\u0435\u0441\u0442\u0432\u0430 \u0432 Firefox 147 (1, 2, 3): \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 Freedesktop.org XDG Base Directory \u0438 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0430 &#171;~\/.config\/mozilla&#187; \u0434\u043b\u044f \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0444\u0438\u043b\u0435\u0439, \u0434\u043e\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0439, [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":153510,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-153509","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - 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