Cindezela PNG

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Indlela yokucindezela PNG

1 Nciphisa i PNG images yakho kwibhokisi eliphezulu, noma ukhethe kusuka kwidivayisi yakho — akukho okuzofakwa futhi akukho i-akhawunti eyenza.

2 Khetha ukuthi kunzima kangakanani ukucindezela: umgangatho noma i-bitrate efanele, futhi ngokuzikhethela ubukhulu obuncane uma ubukhulu bubalulekile kuwe kunemingwane.

3 Qala umsebenzi bese uvumela abasebenzayo ukuthi baphinde bahlanganise ihele; okubhaliwe akushintshiwe endaweni.

4 Linganisa ubukhulu obusha nobukhona, bese ulanda ifayela elicindezelwe PNG.

Cindezela PNG Imibuzo Evame Ukubuzwa

Indlela i Cindezela PNG eyenza ngayo ihele lincane?

Ngokucacile, wonke ama-pixel ahlala e-bit-exact futhi ukulondolozwa kufinyelelwa kusuka ku-DEFLATE enamandla noma i-LZW pass plus i-palette reduction lapho isithombe sikhona khona imibala embalwa, ngakho-ke isithombe-skrini noma i-piece of line art sincane kakhulu kunalokho isithombe esikwenzayo. Akukho lutho oluphathelene nalo luya ngokuthi ufaka kanjani isofthiwe: umsebenzi usebenza ngasekhasini lomsekeli futhi ubuyisela ihele eliqediwe.

Ingabe ifayela lami lizobe lincane kangakanani?

Okukucatshangelwa yizinto ezingaphakathi, hhayi yithuluzi. Imingwane yesithombe, ifilimu ne-grain kanye ne-sensor nokunye okungcolisa ukumelana nokucindezeleka; umbala oqinile, izindawo ezinkulu ezifanayo, umdwebo we-line kanye nokucindezeleka kwe-text. Ulindele ukuncipha okuphawulekayo kwisithombe-skrini noma ilogo kanye nokunye okuncane kwisithombe esisebenza kakhulu.

Ingabe ifomu lefayela lami lishintsha inani engingagcina ngalo?

Kuhle kakhulu. I-PNG i-DEFLATE engalahlekelwanga nge-8-bit alfa channel ephelele ne-16-bit ububanzi obukhethwayo, ngakho-ke ayikwazi ukuncipha uma igcinwa futhi kodwa itholakale enkulu kuma-contents wezithombe. Okusho ukuthi igumbi lokuphumula elikhona kanye nokuthi ngabe ukulondoloza kubiza yini noma yini ethembekile.

Ingabe kukhona okuthile okukhethekile ku PNG okufanele ngikwazi ngaphambi kokucindezela?

Yebo — Akukho sinqumlisi somgangatho esingakwazi ukukhohlwa — i-PNG ihamba ngezinyawo ngokucophelela, ngakho into eyodwa kuphela eguqula izindleko zakho yisayizi yefayela. Kubalulekile ukwazi ngaphambi kokubhala ngaphezulu okujwayelekile okungahle kudinga ukuphinda.

Yini iphutha elivame kakhulu uma licindezela PNG images?

Ukucindezela ifayela elifanayo ngokuphindaphinda. Ukuhamba ngalinye kwifomethi elahlekile kuyisizukulwane esitsha sokulimala futhi ukulondolozwa kuncane uma ukulimala kuqoqwa. Iya kusuka kukuqala kuya kunjongo yakho ngenyathelo eyodwa, futhi ugcine okukuqala.

Yini engitholayo emuva, futhi ngingakwazi ukuphatha i-trade-off?

Ihele elilodwa elicindezelwe ngengeniso ngalinye, kusezingeni lomgangatho okhethayo ngaphezu kokumiswa okuqinile. Uma imiphumela ihlala ingancane ngokwanele, ukuncipha kwezinto ezibonakalayo zepixel kuzokwenza okuningi kunalokho ukucindezela isici sokuzivumelanisa ngezansi.

Yini engikwazi ukuyifaka ku Cindezela PNG?

PNG, BMP ne TIFF yifomethi ye-raster engalahlekelwa yisimo esiphatha ngokuqondile, futhi ama-lossesy sources (JPG, WebP, GIF) asebenza futhi uma ufuna ukuba kulowo mhlangano. I-TIFF enekhasi elilodwa noma eliningi itholakale futhi iphathwa ikhasi ngekhasi.

Ingabe kunesilinganiselo sobukhulu behele ku Cindezela PNG?

Yebo: ama-akhawunti amahhala asebenza izithombe kuze kube yi-5 MB ngayinye; ama-sources angeke alahlekelwa yisimo esiphezulu kuqala kunama-photographs, ngoba akukho okuthunyelwe okwamanje. Uma ungaphezu kwayo, ukushintshana ku-PNG kuqala kuvame ukunethezeka ngokwayo — i-BMP ivame ukube yiminyaka eyisithupha kuya kweziyishumi ubukhulu besithombe esifanayo njenge-PNG.

Ingabe Cindezela PNG izonciphisa ukhwalithi ye PNG images yami?

Akukho. Umsuka ongenalutho ujikeleza-uhambe nge-bit-efanele, ngakho-ke uma ungacela ngokucacile ifomu lokukhishwa elinalutho ama-pixels abuyela emuva yi-pixels asuka ngaphakathi. Lokhu kuyisizathu esiphelele sokuqhubeka nokusebenza kulolu mndeni ngenkathi uqhubeka nokulungisa.

Ingabe ngizosebenzisa Cindezela PNG ku PNG images amaningi ngasikhathi sinye?

Yebo — thumela iset futhi iqhubekele phambili ngokufanayo ngaphansi kweset eyodwa yezilungiselelo. Amafayela angekho emthethweni akhulu, ngakho-ke iqembu elikhulu liboshwe yijubane lakho lokulayisha ngaphezu kokuqhubekela phambili.

Ingabe isixhumi se-alpha sizohlala?

Yebo. I-PNG ne-TIFF zifaka isixhumi esigcwele se-8-bit alfa futhi zigcinwa kuze kube yilapho. Zihlanganiswa kuphela uma ubeka inhloso yohlelo olungena-alpha, lapho ama-pixels acacile ehlanganisana emhlophe.

Ingabe Cindezela PNG ibiza noma yini?

No. Cindezela PNG isebenza ngokukhululekile ngaphandle kwe-akhawunti futhi ayisebenzisi i-watermark. Amafayela asuswa ku-workers ngemuva kokulanda, futhi akukho okuphathelene nesithombe esigcinwe.