{"id":181657,"date":"2026-05-22T12:24:54","date_gmt":"2026-05-22T10:24:54","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/firefox-151"},"modified":"2026-05-22T12:24:54","modified_gmt":"2026-05-22T10:24:54","slug":"firefox-151","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/firefox-151","title":{"rendered":"Firefox 151","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex>      <\/p>\n<p><a rel=\"nofollow\" href=\"https:\/\/download-installer.cdn.mozilla.net\/pub\/firefox\/releases\/151.0\/\">Dostupn\u00e9<\/a> Firefox 151, kter\u00e1 se vyzna\u010duje vylep\u0161enou ochranou proti sledov\u00e1n\u00ed digit\u00e1ln\u00edch otisk\u016f, podporou Web Serial API a tak\u00e9 mo\u017enost\u00ed, aby webov\u00e9 str\u00e1nky zachycovaly vstup z kl\u00e1vesnice v re\u017eimu cel\u00e9 obrazovky.<\/noindex>\n<\/p>\n<ul>\n<li>M\u00edstn\u00ed z\u00e1lohov\u00e1n\u00ed profilu je dostupn\u00e9 na Linuxu (v macOS se zap\u00edn\u00e1 <a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=2039334\">odlo\u017eeno<\/a> a\u017e do dal\u0161\u00edho vyd\u00e1n\u00ed).\n<\/li>\n<li>P\u0159epracov\u00e1no <a rel=\"nofollow\" href=\"https:\/\/www.firefox.com\/media\/img\/firefox\/releasenotes\/note-images\/151_newtab_wallpaper.png\">design<\/a> nov\u00e9 kart\u011b, aby se zajistila jej\u00ed p\u0159ipravenost na budouc\u00ed zm\u011bny, jako jsou widgety a vylep\u0161en\u00e9 z\u00e1stupce, kter\u00e9 se o\u010dek\u00e1vaj\u00ed v dal\u0161\u00ed verzi (browser.newtabpage.activity-stream.nova.enabled).\n<\/li>\n<li>\u0160\u00ed\u0159ka vyhled\u00e1vac\u00edho pole v nastaven\u00edch byla zna\u010dn\u011b zv\u00fd\u0161ena.\n<\/li>\n<li>V re\u017eimu soukrom\u00e9ho prohl\u00ed\u017een\u00ed <a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1902686\">se objevila<\/a> mo\u017enost <a rel=\"nofollow\" href=\"https:\/\/www.firefox.com\/media\/img\/firefox\/releasenotes\/note-images\/151_private_browsing.png\">vymazat<\/a> v\u0161echna data aktu\u00e1ln\u00ed relace bez nutnosti zav\u00edrat okno prohl\u00ed\u017ee\u010de a za\u010d\u00ednat novou relaci.\n<\/li>\n<li>Ochrana proti sledov\u00e1n\u00ed se stala je\u0161t\u011b lep\u0161\u00ed v boji proti sb\u011bru digit\u00e1ln\u00edch otisk\u016f. Po\u010det u\u017eivatel\u016f, kter\u00e9 se da\u0159\u00ed jednozna\u010dn\u011b identifikovat, se pr\u016fm\u011brn\u011b sn\u00ed\u017eil o 14 % (a v macOS o 49 %).\n<\/li>\n<li>Prohl\u00ed\u017ee\u010d PDF <a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=2030178\">se nau\u010dil<\/a> <a rel=\"nofollow\" href=\"https:\/\/www.firefox.com\/media\/img\/firefox\/releasenotes\/note-images\/151_pdf_merge.png\">slou\u010dit<\/a> v\u00edce dokument\u016f.\n<\/li>\n<li>V podmenu \u201eDal\u0161\u00ed n\u00e1stroje\u201c <a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=2028995\">p\u0159id\u00e1n<\/a> je polo\u017eka pro vyvol\u00e1n\u00ed about:translations.\n<\/li>\n<li>Vestav\u011bn\u00fd VPN nyn\u00ed <a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=2031802\">umo\u017e\u0148uje<\/a> vybere zemi, kde je um\u00edst\u011bn v\u00fdstupn\u00ed uzel.\n<\/li>\n<li><a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1525379\">Opraveno<\/a> poskytuje webov\u00fdm str\u00e1nk\u00e1m nespr\u00e1vn\u00e9 \u00fadaje o rozli\u0161en\u00ed obrazovky v syst\u00e9mech s v\u00edce monitory.\n<\/li>\n<li><a rel=\"nofollow\" href=\"https:\/\/support.mozilla.org\/kb\/automatically-fill-your-address-web-forms\">Automatick\u00e9 dopl\u0148ov\u00e1n\u00ed adres<\/a> <a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=2031025\">zahrnuto<\/a> pro u\u017eivatele z Nizozemska.\n<\/li>\n<li><a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1924572\">Odstran\u011bno<\/a> architektonick\u00e9 omezen\u00ed, kter\u00e9 br\u00e1nilo web\u016fm vid\u011bt do\u010dasn\u00e1 povolen\u00ed (kdy\u017e u\u017eivatel nap\u0159\u00edklad povolil p\u0159\u00edstup k geolokaci, ale neozna\u010dil \u201ezapamatovat si toto rozhodnut\u00ed\u201c).\n<\/li>\n<li>P\u0159esunut\u00ed profilu do jin\u00e9ho adres\u00e1\u0159e nebo jin\u00e9ho opera\u010dn\u00edho syst\u00e9mu <a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1429838\">u\u017e v\u00edce neporu\u0161uje<\/a> fungov\u00e1n\u00ed nainstalovan\u00fdch dopl\u0148k\u016f a motiv\u016f (ve souboru extensions.json z\u016fst\u00e1valy star\u00e9 cesty).\n<\/li>\n<li>macOS:\n<ul>\n<li><a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1717071\">Byla implementov\u00e1na<\/a> podpora odkaz\u016f, <a rel=\"nofollow\" href=\"https:\/\/support.apple.com\/en-us\/102430\">um\u00edst\u011bn\u00fdch<\/a> v schr\u00e1nce na za\u0159\u00edzen\u00edch s iOS.\n<\/li>\n<li>Rozbalen\u00e9 prvky  nyn\u00ed <a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=2018516\">pou\u017e\u00edvaj\u00ed<\/a> native menu opera\u010dn\u00edho syst\u00e9mu.\n<\/li>\n<li>Byla opravena chyba, kv\u016fli kter\u00e9 se na syst\u00e9mech s v\u00edce monitory otev\u0159ely rozbalen\u00e9 okna Firefoxu po restartu <a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=875858\">na nespr\u00e1vn\u00e9m monitoru.<\/a> Vylep\u0161ena\n<\/li>\n<li><a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1396587\">spr\u00e1va barev p\u0159i kop\u00edrov\u00e1n\u00ed a vkl\u00e1d\u00e1n\u00ed obr\u00e1zk\u016f.<\/a> Windows: Firefox nyn\u00ed\n<\/li>\n<\/ul>\n<\/li>\n<li>bere v \u00favahu <a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=2022043\">syst\u00e9mov\u00e9 nastaven\u00ed geolokace, kdy\u017e u\u017eivatel povol\u00ed webov\u00e9 str\u00e1nce ur\u010dov\u00e1n\u00ed polohy. Pokud je geolokace na \u00farovni OS vypnut\u00e1, prohl\u00ed\u017ee\u010d po\u017e\u00e1d\u00e1 u\u017eivatele, aby ji povolil.<\/a> atributu\n<\/li>\n<li>HTML: <a rel=\"nofollow\" href=\"https:\/\/bugzil.la\/2031295\">P\u0159ibyla<\/a> <a rel=\"nofollow\" href=\"https:\/\/bugzil.la\/2023824\">podpora<\/a> shadowrootslotassignment <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/HTML\/Reference\/Elements\/template#shadowrootslotassignment\">na prvc\u00edch<\/a> na prvc\u00edch <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/HTML\/Reference\/Elements\/template\">. V JavaScriptu se tento atribut odr\u00e1\u017e\u00ed vlastnostmi<\/a>. <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/API\/ShadowRoot\/slotAssignment\">ShadowRoot.slotAssignment<\/a> nebo <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/API\/HTMLTemplateElement\/shadowRootSlotAssignment\">HTMLTemplateElement.shadowRootSlotAssignment<\/a>.\n<\/li>\n<li>CSS:\n<ul>\n<li>Direktiva <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/CSS\/Reference\/At-rules\/@container\">@container<\/a> <a rel=\"nofollow\" href=\"https:\/\/bugzil.la\/2016929\">um\u00ed<\/a> <a rel=\"nofollow\" href=\"https:\/\/bugzil.la\/2019254\">srcset<\/a> <a rel=\"nofollow\" href=\"https:\/\/bugzil.la\/2024601\">dotazy<\/a> <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/CSS\/Guides\/Containment\/Container_size_and_style_queries#container_style_queries\">style()<\/a> (umo\u017e\u0148uje zjistit, zda m\u00e1 kontejner platn\u00e9 prohl\u00e1\u0161en\u00ed, konkr\u00e9tn\u00ed vlastnost nebo vlastn\u00ed vlastnost, a aplikovat styly na jeho pod\u0159\u00edzen\u00e9 prvky odpov\u00eddaj\u00edc\u00edm zp\u016fsobem).\n<\/li>\n<li>Vlastnost <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/CSS\/Reference\/Properties\/position-anchor\">position-anchor<\/a> um\u00ed <a rel=\"nofollow\" href=\"https:\/\/bugzil.la\/2030351\">srcset<\/a> (v\u00fdchoz\u00ed) hodnota normal (zaji\u0161\u0165uje konzistenci s vlastnost\u00ed <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/CSS\/Reference\/Properties\/position-area\">position-area<\/a>: pokud je aktualizov\u00e1no, pak se tak\u00e9 position-anchor automaticky aktualizuje).\n<\/li>\n<\/ul>\n<\/li>\n<li>API:\n<ul>\n<li>Metoda <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/API\/Sanitizer\/replaceElementWithChildren\">Sanitizer.replaceElementWithChildren()<\/a> um\u00ed <a rel=\"nofollow\" href=\"https:\/\/bugzil.la\/2032359\">vrac\u00ed<\/a> false, pokud je nahrazovan\u00fdm prvkem <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/SVG\/Reference\/Element\/svg\">&lt;svg&gt;<\/a> ve jmenn\u00e9m prostoru SVG nebo <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/MathML\/Reference\/Element\/math\"><math><\/a> ve jmenn\u00e9m prostoru MathML.\n<\/li>\n<li><a rel=\"nofollow\" href=\"https:\/\/bugzil.la\/2006594\">P\u0159ibyla<\/a> podpora <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/API\/Document_Picture-in-Picture_API\">Document Picture-in-Picture API<\/a> (umo\u017e\u0148uje otev\u0159\u00edt okno um\u00edst\u011bn\u00e9 nad ostatn\u00edmi okny, kter\u00e9 m\u016f\u017ee obsahovat jak\u00fdkoli HTML obsah).\n<\/li>\n<li><a rel=\"nofollow\" href=\"https:\/\/bugzil.la\/1943070\">Bylo p\u0159id\u00e1no<\/a> vlastnost <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/API\/CanvasRenderingContext2D\/lang\">CanvasRenderingContext2D.lang<\/a> (u\u017eite\u010dn\u00e9 pro nastaven\u00ed kontextu pro pl\u00e1tno bez obrys\u016f, kter\u00e9 m\u016f\u017ee b\u00fdt vykresleno je\u0161t\u011b p\u0159edt\u00edm, ne\u017e bude spojeno s jak\u00fdmkoli prvkem <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/HTML\/Reference\/Elements\/canvas\">&lt;canvas&gt;<\/a>).\n<\/li>\n<li>Metoda <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/API\/Element\/requestFullscreen\">Element.requestFullscreen()<\/a> um\u00ed <a rel=\"nofollow\" href=\"https:\/\/bugzil.la\/2032302\">p\u0159ij\u00edm\u00e1<\/a> vlastnost <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/API\/Element\/requestFullscreen#keyboardlock\">options.keyboardLock<\/a> jako parameter (umo\u017e\u0148uje web\u016fm po\u017eadovat blokaci kl\u00e1vesnice, kdy\u017e je prvek zobrazen v re\u017eimu cel\u00e9 obrazovky). Weby nyn\u00ed mohou zabr\u00e1nit ukon\u010den\u00ed re\u017eimu cel\u00e9 obrazovky pomoc\u00ed kl\u00e1vesy Esc (ukon\u010den\u00ed z\u016fst\u00e1v\u00e1 mo\u017en\u00e9 p\u0159i dr\u017een\u00ed kl\u00e1vesy), a tak\u00e9 zachycovat n\u011bkter\u00e9 d\u0159\u00edve rezervovan\u00e9 kl\u00e1vesov\u00e9 zkratky prohl\u00ed\u017ee\u010de a zru\u0161it jejich standardn\u00ed akci.\n<\/li>\n<li><a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/API\/GPUSupportedLimits\">GPUSupportedLimits<\/a> um\u00ed <a rel=\"nofollow\" href=\"https:\/\/bugzil.la\/2006720\">srcset<\/a> vlastnosti maxStorageBuffersInFragmentStage, maxStorageBuffersInVertexStage, maxStorageTexturesInFragmentStage a maxStorageTexturesInVertexStage (umo\u017e\u0148uj\u00ed nastavit maxim\u00e1ln\u00ed po\u010det \u00falo\u017en\u00fdch vyrovn\u00e1vac\u00edch pam\u011bt\u00ed a textur povolen\u00fdch na f\u00e1z\u00edch fragmentov\u00e9ho a vrcholov\u00e9ho shaderu.\n<\/li>\n<li><a rel=\"nofollow\" href=\"https:\/\/bugzil.la\/2022827\">Byla implementov\u00e1na<\/a> podpora vlastnosti <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/API\/CSSContainerRule\/conditions\">CSSContainerRule.conditions<\/a>. Vlastnost condition reprezentuje odpov\u00eddaj\u00edc\u00ed direktivu <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/CSS\/Reference\/At-rules\/@container\">@container<\/a> ve form\u011b pole objekt\u016f, kde ka\u017ed\u00fd objekt popisuje jednotlivou podm\u00ednku kontejneru.\n<\/li>\n<li>Byla p\u0159id\u00e1na podpora <a rel=\"nofollow\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/API\/Web_Serial_API\">Web Serial API<\/a> (umo\u017e\u0148uje \u0159\u00eddit mikro\u0159adi\u010de s podporou s\u00e9riov\u00e9ho rozhran\u00ed). To d\u00e1v\u00e1 mo\u017enost programovat mikro\u0159adi\u010de a ladic\u00ed desky (jako jsou za\u0159\u00edzen\u00ed ESP, BBC micro:bit a Raspberry Pi Pico), 3D tisk\u00e1rny, CNC stroje a dal\u0161\u00ed za\u0159\u00edzen\u00ed. Ka\u017ed\u00fd web, kter\u00fd chce pou\u017e\u00edt toto API, mus\u00ed vytvo\u0159it <a rel=\"nofollow\" href=\"https:\/\/support.mozilla.org\/en-US\/kb\/site-permission-add-ons\">speci\u00e1ln\u00ed roz\u0161\u00ed\u0159en\u00ed<\/a>, kter\u00e9 poskytuje pot\u0159ebn\u00e1 opr\u00e1vn\u011bn\u00ed, a u\u017eivatel mus\u00ed toto roz\u0161\u00ed\u0159en\u00ed nainstalovat (podobn\u011b jako to ji\u017e bylo ud\u011bl\u00e1no s WebMIDI).\n<\/li>\n<\/ul>\n<\/li>\n<li>N\u00e1stroje pro v\u00fdvoj\u00e1\u0159e: Rozbalovac\u00ed nab\u00eddka pro ovl\u00e1d\u00e1n\u00ed rychlosti animace nyn\u00ed <a rel=\"nofollow\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1995485\">dostupn\u00e9 v\u017edy<\/a> (p\u0159edt\u00edm se objevovalo pouze p\u0159i aktivn\u00ed animaci, co\u017e zt\u011b\u017eovalo jeho pou\u017eit\u00ed v p\u0159\u00edpad\u011b velmi kr\u00e1tk\u00fdch animac\u00ed).\n<\/li>\n<\/ul>\n<p>Zdroj: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.linux.org.ru\/news\/mozilla\/18297259\">linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d Firefox 151, \u043f\u0440\u0438\u043c\u0435\u0447\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u0443\u043b\u0443\u0447\u0448\u0435\u043d\u043d\u043e\u0439 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 \u0441\u0431\u043e\u0440\u0430 \u0446\u0438\u0444\u0440\u043e\u0432\u044b\u0445 \u043e\u0442\u043f\u0435\u0447\u0430\u0442\u043a\u043e\u0432, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u043e\u0439 Web Serial API, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c\u044e \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0437\u0430\u0445\u0432\u0430\u0442\u044b\u0432\u0430\u0442\u044c \u0432\u0432\u043e\u0434 \u0441 \u043a\u043b\u0430\u0432\u0438\u0430\u0442\u0443\u0440\u044b \u0432 \u043f\u043e\u043b\u043d\u043e\u044d\u043a\u0440\u0430\u043d\u043d\u043e\u043c \u0440\u0435\u0436\u0438\u043c\u0435. \u041b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0435 \u0440\u0435\u0437\u0435\u0440\u0432\u043d\u043e\u0435 \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u0440\u043e\u0444\u0438\u043b\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e \u0432 Linux (\u0432 macOS \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435 \u043e\u0442\u043b\u043e\u0436\u0435\u043d\u043e \u0434\u043e \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u0433\u043e \u0432\u044b\u043f\u0443\u0441\u043a\u0430). \u041f\u0435\u0440\u0435\u0440\u0430\u0431\u043e\u0442\u0430\u043d \u0434\u0438\u0437\u0430\u0439\u043d \u043d\u043e\u0432\u043e\u0439 \u0432\u043a\u043b\u0430\u0434\u043a\u0438, \u0447\u0442\u043e\u0431\u044b \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0442\u044c \u0435\u0451 \u0433\u043e\u0442\u043e\u0432\u043d\u043e\u0441\u0442\u044c \u043a \u0431\u0443\u0434\u0443\u0449\u0438\u043c \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f\u043c, \u0442\u0430\u043a\u0438\u043c \u043a\u0430\u043a \u0432\u0438\u0434\u0436\u0435\u0442\u044b \u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-181657","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d Firefox 151, \u043f\u0440\u0438\u043c\u0435\u0447\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u0443\u043b\u0443\u0447\u0448\u0435\u043d\u043d\u043e\u0439 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 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