{"id":184265,"date":"2026-11-14T17:42:26","date_gmt":"2026-11-14T15:42:28","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/kompaniya-cloudflare-otkryla-kod-web-brauzera-kitesurf"},"modified":"2026-11-14T17:42:32","modified_gmt":"2026-11-14T15:42:32","slug":"cloudflare-open-sources-kitesurf-web-browser","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/cloudflare-open-sources-kitesurf-web-browser","title":{"rendered":"Spole\u010dnost Cloudflare otev\u0159ela k\u00f3d webov\u00e9ho prohl\u00ed\u017ee\u010de Kitesurf","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Spole\u010dnost Cloudflare ozn\u00e1mila otev\u0159en\u00ed zdrojov\u00e9ho k\u00f3du webov\u00e9ho prohl\u00ed\u017ee\u010de Kitesurf, ur\u010den\u00e9ho pro pou\u017eit\u00ed AI agenty a boty. Kitesurf podporuje anal\u00fdzu HTML, aplikaci CSS styl\u016f, spu\u0161t\u011bn\u00ed JavaScriptu a generov\u00e1n\u00ed sn\u00edmk\u016f obrazovky, av\u0161ak postr\u00e1d\u00e1 slo\u017eitosti a nadbytky vytvo\u0159en\u00e9 pro lidi, kter\u00e9 jsou pro boty zbyte\u010dn\u00e9. Odstran\u011bn\u00ed takov\u00fdch funkc\u00ed, jako je dokonal\u00e9 vykreslov\u00e1n\u00ed a podpora roz\u0161\u00ed\u0159en\u00ed, umo\u017enilo v\u00fdrazn\u011b sn\u00ed\u017eit z\u00e1t\u011b\u017e na CPU a spot\u0159ebu pam\u011bti. K\u00f3d je naps\u00e1n v jazyc\u00edch Rust a TypeScript a je distribuov\u00e1n pod licenc\u00ed Apache 2.0. <\/p>\n<p>M\u00edsto t\u011b\u017ekop\u00e1dn\u00fdch prohl\u00ed\u017ee\u010dov\u00fdch engin\u016f Kitesurf vyu\u017e\u00edv\u00e1 otev\u0159en\u00e9 knihovny napsan\u00e9 v jazyce Rust: Blitz pro anal\u00fdzu HTML, pr\u00e1ci s DOM, form\u00e1tov\u00e1n\u00ed a vykreslov\u00e1n\u00ed str\u00e1nky; Stylo (pou\u017e\u00edv\u00e1 se ve Firefoxu) pro zpracov\u00e1n\u00ed CSS; Boa pro prov\u00e1d\u011bn\u00ed JavaScriptu a podporu WebAssembly; Linebender pro pr\u00e1ci s textem a 2D grafikou; Krilla pro generaci v\u00fdstupu ve form\u00e1tu PDF.<\/p>\n<p>Ve srovn\u00e1n\u00ed s pou\u017eit\u00edm enginu Chromium bylo p\u0159i prov\u00e1d\u011bn\u00ed operac\u00ed vytv\u00e1\u0159en\u00ed sn\u00edmk\u016f obrazovky v Kitesurf zaznamen\u00e1no sn\u00ed\u017een\u00ed z\u00e1t\u011b\u017ee CPU o 3,1kr\u00e1t a sn\u00ed\u017een\u00ed spot\u0159eby pam\u011bti o 4,7kr\u00e1t, zat\u00edmco p\u0159i anal\u00fdze HTML to bylo 3,8 a 7kr\u00e1t p\u0159\u00edslu\u0161n\u011b. Celkov\u00fd \u010das prov\u00e1d\u011bn\u00ed test\u016f se p\u0159itom uk\u00e1zal b\u00fdt o 1,7 a 1,8kr\u00e1t pomalej\u0161\u00ed kv\u016fli studen\u00e9mu startu, rasterizaci a k\u00f3dov\u00e1n\u00ed do JPEG\/PNG. <\/p>\n<p>Kitesurf \u00fasp\u011b\u0161n\u011b pro\u0161el v\u00edce ne\u017e 215 tis\u00edc testy z kolekce WPT (Web Platform Tests), spr\u00e1vn\u011b vykresluje str\u00e1nky typick\u00fdch web\u016f, jako je Wikipedia, podporuje r\u016fzn\u00e9 webov\u00e9 frameworky (React, Vue, Angular, Preact) a dok\u00e1\u017ee spustit hru Doom, zkompilovanou do WebAssembly.<br \/>\nZ omezen\u00ed je uvedena absence podpory p\u0159ehr\u00e1v\u00e1n\u00ed videa, WebGL, slo\u017eit\u00fdch skript\u016f pro ov\u011b\u0159en\u00ed CAPTCHA a dlouh\u00fdch autentifikovan\u00fdch sezen\u00ed, kter\u00e9 vy\u017eaduj\u00ed uchov\u00e1n\u00ed stavu.<\/p>\n<p>Prohl\u00ed\u017ee\u010d se skl\u00e1d\u00e1 ze t\u0159\u00ed komponent: <\/p>\n<ul>\n<li class=\"l\"> Engin pro \u0159\u00edzen\u00ed sezen\u00ed, zpracov\u00e1n\u00ed klientsk\u00fdch spojen\u00ed a podporu protokolu CDP (Chrome DevTools Protocol);\n<li class=\"l\"> PageScript pro izolovan\u00e9 zpracov\u00e1n\u00ed webov\u00e9 str\u00e1nky a prov\u00e1d\u011bn\u00ed JavaScriptu;\n<li class=\"l\"> PageRenderer pro vykreslov\u00e1n\u00ed str\u00e1nek, generov\u00e1n\u00ed sn\u00edmk\u016f obrazovky a export do PDF.\n<\/ul>\n<p>Komponenty jsou izolov\u00e1ny od sebe a maj\u00ed p\u0159\u00edstup pouze k nezbytn\u00fdm zdroj\u016fm. Pr\u00e1ce prob\u00edh\u00e1 v re\u017eimu Stateless bez uchov\u00e1v\u00e1n\u00ed stavu.<\/p>\n<p><center><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/917d486a3cae99fb797179a82f07a848.png\" style=\"display:block;margin: 0 auto;\" \/><\/center><\/p>\n<p>Kitesurf je navr\u017een tak, aby byl spu\u0161t\u011bn na platform\u011b Cloudflare Workers (dostupn\u00fd otev\u0159en\u00fd runtime workerd) s kompilac\u00ed do WebAssembly, ale m\u016f\u017ee b\u00fdt pou\u017eit nejen v infrastruktu\u0159e Cloudflare, ale tak\u00e9 na m\u00edstn\u00edch syst\u00e9mech s Node.js. Pro spr\u00e1vu a automatizaci interakce s Kitesurf se doporu\u010duje pou\u017e\u00edvat Web API p\u0159es WebSocket, rozhran\u00ed p\u0159\u00edkazov\u00e9ho \u0159\u00e1dku a CDP protokol kompatibiln\u00ed s knihovnou Puppeteer.<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=66689\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Cloudflare \u043e\u0431\u044a\u044f\u0432\u0438\u043b\u0430 \u043e\u0431 \u043e\u0442\u043a\u0440\u044b\u0442\u0438\u0438 \u0438\u0441\u0445\u043e\u0434\u043d\u043e\u0433\u043e \u043a\u043e\u0434\u0430 web-\u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430 Kitesurf, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u0434\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f AI-\u0430\u0433\u0435\u043d\u0442\u0430\u043c\u0438 \u0438 \u0431\u043e\u0442\u0430\u043c\u0438. Kitesurf \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0440\u0430\u0437\u0431\u043e\u0440 HTML, \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435 CSS-\u0441\u0442\u0438\u043b\u0435\u0439, \u0437\u0430\u043f\u0443\u0441\u043a JavaScript \u0438 \u0433\u0435\u043d\u0435\u0440\u0430\u0446\u0438\u044e \u0441\u043a\u0440\u0438\u043d\u0448\u043e\u0442\u043e\u0432, \u043d\u043e \u043f\u0440\u0438 \u044d\u0442\u043e\u043c \u043b\u0438\u0448\u0451\u043d \u0443\u0441\u043b\u043e\u0436\u043d\u0435\u043d\u0438\u0439 \u0438 \u0438\u0437\u043b\u0438\u0448\u0435\u0441\u0442\u0432, \u0441\u043e\u0437\u0434\u0430\u043d\u043d\u044b\u0445 \u0434\u043b\u044f \u043b\u044e\u0434\u0435\u0439 \u0438 \u0431\u0435\u0441\u043f\u043e\u043b\u0435\u0437\u043d\u044b\u0445 \u0434\u043b\u044f \u0431\u043e\u0442\u043e\u0432. \u0418\u0437\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043e\u0442 \u0442\u0430\u043a\u0438\u0445 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0435\u0439, \u043a\u0430\u043a \u0438\u0434\u0435\u0430\u043b\u044c\u043d\u0430\u044f \u043e\u0442\u0440\u0438\u0441\u043e\u0432\u043a\u0430 \u0438 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u0439, \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u043b\u0438 \u0437\u0430\u043c\u0435\u0442\u043d\u043e \u0441\u043d\u0438\u0437\u0438\u0442\u044c \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0443 \u043d\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-184265","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.5 - aioseo.com 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