{"id":86636,"date":"2020-06-27T19:42:48","date_gmt":"2020-06-27T17:42:48","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-chrome-predlozhen-novyj-interfejs-pdf-prosmotrshhika-i-dobavlena-podderzhka-avif"},"modified":"2020-06-27T19:42:48","modified_gmt":"2020-06-27T17:42:48","slug":"v-chrome-predlozhen-novyj-interfejs-pdf-prosmotrshhika-i-dobavlena-podderzhka-avif","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/v-chrome-predlozhen-novyj-interfejs-pdf-prosmotrshhika-i-dobavlena-podderzhka-avif","title":{"rendered":"V Chromu byl p\u0159edstaven nov\u00fd rozhran\u00ed PDF prohl\u00ed\u017ee\u010de a byla p\u0159id\u00e1na podpora form\u00e1tu AVIF","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V r\u00e1mci Chromu je zahrnuta<\/a><\/noindex> nov\u00e1 implementace rozhran\u00ed integrovan\u00e9ho prohl\u00ed\u017ee\u010de dokument\u016f ve form\u00e1tu PDF. Rozhran\u00ed vynik\u00e1 t\u00edm, \u017ee v\u0161echny nastaven\u00ed byla p\u0159esunuta do horn\u00edho panelu. Pokud d\u0159\u00edve bylo v horn\u00edm panelu pouze zobrazeno jm\u00e9no souboru, informace o str\u00e1nk\u00e1ch, tla\u010d\u00edtka pro ot\u00e1\u010den\u00ed, tisk a ukl\u00e1d\u00e1n\u00ed, nyn\u00ed je v n\u011bm tak\u00e9 um\u00edst\u011bno obsah bo\u010dn\u00edho panelu, kter\u00fd zahrnoval ovl\u00e1dac\u00ed prvky pro zoomov\u00e1n\u00ed a um\u00edst\u011bn\u00ed dokumentu na velikost str\u00e1nky. Byla p\u0159id\u00e1na<\/a><\/noindex> mo\u017enost ukl\u00e1dat upraven\u00e9 PDF formul\u00e1\u0159e, stejn\u011b jako re\u017eim<\/a><\/noindex> zobrazen\u00ed dvou stran.<\/p>\n

Pro aktivaci nov\u00fdch funkc\u00ed byly navr\u017eeny p\u0159ep\u00edna\u010de «chrome:\/\/flags#pdf-viewer-update», «chrome:\/\/flags\/#pdf-form-save» a «chrome:\/\/flags\/#pdf-two-up-view».<\/p>\n

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Mezi zm\u011bnami v Chromu lze tak\u00e9 zm\u00ednit za\u010dlen\u011bn\u00ed<\/a><\/noindex> podporu form\u00e1tu obr\u00e1zk\u016f AVIF<\/a><\/noindex> (AV1 Image Format), kter\u00fd vyu\u017e\u00edv\u00e1 technologie intra-frame komprese z video k\u00f3dov\u00e1n\u00ed AV1. Kontejner pro distribuci komprimovan\u00fdch dat ve form\u00e1tu AVIF je zcela analogick\u00fd HEIF. AVIF podporuje jak obr\u00e1zky v HDR (High Dynamic Range) a barevn\u00e9m prostoru s \u0161irok\u00fdm gamutem, tak v standardn\u00edm dynamick\u00e9m rozsahu (SDR). V prohl\u00ed\u017ee\u010di Firefox byla experiment\u00e1ln\u00ed podpora AVIF p\u0159id\u00e1na ve verzi Firefox 77 (povolen\u00edm image.avif.enabled v about:config).<\/p>\n

D\u0159\u00edve byl v Chromu propagov\u00e1n form\u00e1t obr\u00e1zk\u016f WebP<\/a><\/noindex>, kter\u00fd podle test\u016f<\/a><\/noindex> Google umo\u017e\u0148uje zmen\u0161it velikost soubor\u016f s obr\u00e1zky o 25%-34% p\u0159i zachov\u00e1n\u00ed kvality na \u00farovni form\u00e1tu JPEG. Alternativn\u00ed testy ukazuj\u00ed<\/a><\/noindex>, \u017ee WebP nen\u00ed tak efektivn\u00ed, jak bychom si p\u0159\u00e1li — pokud ho srovn\u00e1v\u00e1me ne s referen\u010dn\u00edm k\u00f3dova\u010dem cjpeg od JPEG Group, ale s pou\u017eit\u00edm efektivn\u011bj\u0161\u00edho k\u00f3dova\u010de. MozJPEG<\/a><\/noindex>, pak v\u00fdhoda WebP je znateln\u00e1 pouze u n\u00edzk\u00fdch rozli\u0161en\u00ed (500px), kter\u00e9 jsou nej\u010dast\u011bji pou\u017e\u00edvan\u00e9 na webu. P\u0159i rozli\u0161en\u00ed 1000px je v\u00fdsledek t\u00e9m\u011b\u0159 stejn\u00fd, a p\u0159i rozli\u0161en\u00ed 1500px WebP dokonce zaost\u00e1v\u00e1 za MozJPEG. AVIF v t\u011bchto testech v\u00fdrazn\u011b p\u0159evy\u0161uje MozJPEG, cjpeg a WebP, a proto je pova\u017eov\u00e1n v\u00fdrobci prohl\u00ed\u017ee\u010d\u016f za perspektivn\u011bj\u0161\u00ed form\u00e1t.<\/p>\n

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Zdroj: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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