PNG Amathuluzi

Guqula PNG kuya futhi kusuka kumafomethi ahlukahlukene

Mayelana PNG

Amafayela we-PNG ahambisana nokubukeka okucacile futhi asebenzisa ukucindezeleka okungalahleki, okwenza kube ngcono kakhulu kuma-graphic, amalogo, nama-screenshots.

Ukusetshenziswa Okuvamile

Ukudala ama-logo nemifanekiso enezizinda ezibonakalayo
Ukulondoloza izithombe-skrini kanye nobuciko bedijithali
Ihluzo zewebhu ezidinga ukucaca

PNG Imibuzo Evame Ukubuzwa Yokuguqulwa

Yini ihele le-PNG?

I-PNG iyifomethi yesithombe se-raster engalahlekelwa yisimo esigcina wonke ama-pixel ngaphandle kokucindezeleka. I-PNG ilungele kakhulu ukuthwebula izithombe, umdwebo we-line, iziboniso ezinemigqa eqinile kanye nanoma iyiphi isithombe esizoguqulwa.

Ingabe kukhona okulahlekile uma i-PNG iguqulwa ibe yifomethi engekho emthethweni?

Akukho data ye-pixel. PNG igcina isithombe ngokugcwele ngaphandle kokuyifinyelela, ngakho ukuguqulwa phakathi kwefomethi ezimbili ezingalahleki kuphindeka futhi kungaphinda kuphindeka ngaphandle kokulahlekelwa. Okungakwazi ukulahleka yizinto zonke ezingaphansi kwe-pixels — amaprofayili wemibala, ukubukeka okucacile, ukubukeka, i-metadata efakwe — ngoba usizo lwalezi luhluka kakhulu phakathi kwefomethi kune-pixel storage. I-PNG isebenzisa ukucindezeleka kwe-DEFLATE phezu kwemigqa yokuskena ehlolwe, ngakho wonke ama-pixel ahlala ngokugcwele, kanye ne-8-bit alfa channel ephelele.

Kungani umshicileli wami wesithombe egcina i PNG?

Ngenxa yokuthi iyifomethi i-platform yo Recorder ikhophi ngokusemthethweni, ngakho ukuqoqa kuthatha imali encane ngaphandle kokuqhubekela phambili uma i-machine isebenza ukwenza okuthile. Kuyinketho efanele ngesikhathi so Recording futhi kunzima ukuyenza ngemuva - ihele lidinga ukushintshwa ngaphambi kokuba lihlukaniswe, liguqulwe noma lifakwe kuphi ngaphandle kwendlela eyenza ngayo. I-PNG yakhiwa ngo-1996 njengento eshintshayo engekho emthethweni ye-GIF, futhi yashintsha ibe yifomethi yesithombe esingenalutho esizenzakalelayo se-web.

Ingabe i-PNG igcina isizinda esicacile?

Yebo - ifomu ligcina i-alpha channel engokoqobo, ngakho-ke ukucisha izithonjana, izithako ezibomvu kanye nezibopho zigcina ukubukeka kwazo ngaphandle kokufika ku-rectangle ebomvu. Ukushintsha kufomethi ngaphandle kwe-alpha kuyilapho kudlula khona okungalungile: izindawo ezibonakalayo zigcwele umbala oqinile, ngokuvamile omnyama noma omnyama, futhi akukho indlela yokubuyela emuva encane yokufihla isithako futhi. I-PNG iyisinqumo esifanele sezithombe-skrini, amalogo, umdwebi we-line kanye nanoma yini eneziphetho eziqinile noma ezicacile — akukho ukusakaza, akukho umbala obandayo.

Ingabe ngisebenzisa PNG ngokuqondile kwikhasi le-web?

Yebo — wonke umsakazi okhona uyenza ngokusemthethweni, ngakho-ke adinga ikhophi engekho futhi adinga ukuguquka ngesikhathi sokushicilela. Imibuzo ekhona yisisindo ngaphezu kosizo: isithombe esifanayo kwifomethi yewebhu yamanje sivame ukuba isithathu sobukhulu kukhwalithi ebonakalayo efanayo, okudinga ukukwenziwa nganoma yini ebonakala phezulu kwe-fold.

Ubani olawula i PNG?

Akukho muntu, futhi lokho kuyinto ebalulekile. Ulwazi oluthile luyimfihlo, umuntu angalisebenzisa ngaphandle kokubuza noma ukukhokha, futhi akukho nkampani engakwazi ukushintsha izimo ngemuva - ngakho-ke amafayela, amaqembu ajwayelekile namaqembu asemthethweni achaza amafomethi afana nalesi sinye sezinto ezikhona ezizovula eminyakeni eyisithupha. Ukuthengiswa akulona ukuhambisana, okulungile; kuyilapho akukho umhlinzeki odinga ukuwabiza uma ezinye izithuluzi zisebenzisa i-spec ngokubi.

Ingabe ngingenza ngiphinde ngibize isiqephu endaweni yokushintsha PNG?

Kunzima kakhulu, futhi kufanelekile ukuqonda ukuthi kungani: isithonjana siyisihloko, ngenkathi ama-bytes ngaphakathi kufakwe ngefomethi eyodwa ekhethekile. Ukushintsha igama kwenza ihele igama lakhe lithembisa okuthile okuqukethwe kwayo akusho ukunikela, futhi noma yini evula ihele noma liyiphoqa noma liyifunda kabi. Ukuphela kwephutha elincane yifomethi ezimbili ezikhona ngokusemthethweni ibhokisi elifanayo ngaphansi kwezinhlamvu ezahlukene — futhi ngisho lapho ukuphinda uphinde

Ingabe ngiguqula isibaya esigcwele se PNG amafayela ngasikhathi sinye?

Yebo - khiphana ndawonye futhi zibekwe njengemisebenzi eyodwa endaweni yokushintshana eyodwa ngesikhathi, ngezinhlelo ezifanayo ezisetshenziswa ngaphesheya kweqembu futhi izimpendulo zibuyiselwe ndawonye. Ama-akhawunti amahhala asebenza ngokufanayo; i-plan ekhokhelwa iphakamisa ukuhambisana kanye nobukhulu behele ngalinye, okuyenza iguqule ingobo yomlando enkulu esebenza kahle.

Ngabe kufanele ngiguqule i-PNG ibe yifomethi ehlukile?

Guqula i-PNG ibe yi-JPG noma i-WebP uma isihloko sivuliwe kwi-web noma i-imeyili, lapho ubukhulu befayela elincane libalulekile kune-pixel ngayinye. I-PNG iyifomethi yesithombe esibi: isithombe esigcinwe njenge-PNG sivame ukuba likhulu izikhathi eziyisithupha kuya kweziyishumi kunesithombe esifanayo njenge-JPG noma i-WebP.

Ingabe ukushintsha i-PNG kuzonciphisa ukhwalithi yesithombe?

Uma uguqula i-PNG ibe yifomethi engekho emthethweni, ama-pixels agcinwa ngokugcwele. Uma uguqula i-PNG ibe yifomethi engekho emthethweni njenge-JPG, umbhalo-mbhalo ungenza ubukhulu-nobude-