Guqula izithombe phakathi kwe-JPG, PNG, WEBP ne-BMP kusiphequluli sakho
Isiguquli sezithombe sishintsha isithombe sisuka kwifomethi elilodwa siye kwelinye - siguqula i-PNG ibe i-JPG, i-JPG ibe i-WEBP yesimanje, noma i-WEBP ibuyele ku-PNG. Kuzwakala njengento elula, kodwa ifomethi ngayinye igcina amaphikseli ngendlela ehlukile, ngakho ifomethi oyikhethayo yiyona enquma usayizi wefayela, ukuthi ukungabonakali (transparency) kuyaphila yini, kanye nokuthi umphumela ubukeka ubukhali kangakanani. Leli thuluzi lisebenza ngokugcwele ngaphakathi kusiphequluli sakho. Isithombe osifakayo siyahunyushwa futhi sibuye siphindwe sifakwe ikhodi kudivayisi lakho siqu, ngakho akukho lutho oluke luthunyelwe kusiveva.
Amafomethi amane kanye nokuthi ngeyiphi indawo owasebenzisa yona
I-JPG (JPEG) yifomethi eyakhelwe izithombe zezithombe. Isebenzisa ukucindezela okulahlekelwa okuthile (lossy compression), okusho ukuthi ilahla imininingwane iso lomuntu okungayiboni kalula, ukuze kutholakale amafayela amancane kakhulu. Isithombe sokushona kwelanga noma isithombe somuntu sizobukeka sifana ncimishi kodwa singaphansi kakhulu kunosayizi we-PNG. Inkinga wukuthi i-JPG ayinayo indlela yokugcina ukungabonakali (transparency channel), futhi ukulondoloza njalonjalo kuyaqala kancane kukhiphe ikhwalithi yesithombe. Sisebenzise ezithombeni, izithombe zamakhamera, kanye nanoma yini eya ku-imeyili noma egalari.
I-PNG ayilahlekelwa lutho (lossless). Igcina iphikseli ngalinye njengoba belinjalo futhi isekela indlela egcwele yokungabonakali (alpha channel), ngakho izingemuva ezingabonakali zihlala zingabonakali. Lokho kuyenza ibe yikhetho elifanele kokhiya, amaphakheji, izithombe zesikrini, imidwebo, umdwebo ongumugqa, kanye nanoma yisiphi isithombe esinemiphetho ecacile noma umbhalo. Intengo oyikhokhayo wusayizi: isithombe se-PNG singaba mkhulu ngokuphindiwe ngaphezu kwesilinganiswa se-JPG ngoba akukho okulahlwayo.
I-WEBP yifomethi yesimanje ye-Google futhi izama ukukunikeza okuhle kwazo zombili izinhlobo. Inikeza izindlela zombili ezilahlekelwa okuthile nezingalahlekelwa lutho, isekela ukungabonakali, futhi ngokuvamile ikhiqiza amafayela amancane kakhulu uma kuqhathaniswa ne-JPG noma i-PNG kwikhwalithi efanayo yokubukwa. Isekelwa yiwo wonke amabhrawuza asebenzayo njengamanje, okuyenza ilungele amawebhusayithi nezinhlelo lapho isivinini sokulayisha sibalulekile. Isizathu esiyinhloko sokuguqula uphume ku-WEBP ukuvumelana namasoftware amadala, ezinye izinkundla zokuxhumana, noma amathuluzi okuklama asalindele i-JPG noma i-PNG.
I-BMP yi-bitmap endala engacindezelwe. Igcina imininingwane yephikseli enjengoba injalo ngaphandle kokucindezela nhlobo, ngakho amafayela abe makhulu kakhulu kodwa athembekile ngokuphelele. Awuwadingi kaningi ku-web, kodwa asavela ezinhlelweni ezindala ze-Windows, amathuluzi wobunjiniyela obuthile, nezinqubo ezidinga uhlaka lwephikseli olungathintekile.
Yini eguquka empeleni uma uguqula
Ukuguqula akulona umlingo, futhi kunezinto ezimbalwa okufanele uzazi ngaphambi kokuchofoza. Isimanga esivame kakhulu wukulahlekelwa kokungabonakali (transparency loss). I-JPG ayikwazi ukugcina indlela yokungabonakali, ngakho lapho uguqula i-PNG noma i-WEBP engabonakali ibe i-JPG, izindawo ezingabonakali ziyagcwaliswa - ngokuvamile ngokumhlophe noma okumnyama. Uma udinga ukungabonakali, guqula ube i-PNG noma i-WEBP kunalokho.
Ikhwalithi izenza ngendlela ehlukile kuye ngendlela oguqula ngayo. Ukusuka kumthombo ongalahlekelwa lutho (PNG, BMP) uye ku-JPG noma i-WEBP elahlekelwa okuthile kulahlekelwa imininingwane ethile ukonga isikhala, futhi lesi sinyathelo asikwazi ukubuyiselwa. Ukuya ngakolunye uhlangothi - i-WEBP noma i-JPG iye ku-PNG - akulahlekelwa lutho, ngakho awukaze wengeze imikhawulo emisha, kodwa futhi awukwazi ukubuyisela imininingwane esivele yasuswa ukulondoloza kwangaphambili okulahlekelwa okuthile. I-PNG ilondoloza nje noma yini enikwe yona.
Usayizi wefayela yiso isizathu esibonakalayo esenza abantu abaningi baguqule ngokuphelele. Ukushintsha isithombe se-PNG esinzima sibe i-JPG noma i-WEBP kungasinciphisa ngamaphesenti angu-70 noma ngaphezulu. Ukushintsha uphawu oluncane olungabonakali lube i-JPG, ngakolunye uhlangothi, kungasenza sikhulu futhi sibi ngoba i-JPG ayikho kahle kumibala eyisicaba nemiphetho eqinile. Fanisa ifomethi nokuqukethwe, hhayi nje inombolo encane kunazo zonke.
Kubalulekile ngani ukuguqula ngokwendawo (locally)
Iziguquli eziningi ze-inthanethi zithumela ifayela lakho kumaseva azo, zilicubungule lapho, bese zibuyisela isixhumanisi sokulanda. Lokho kusho ukuthi izithombe zesikrini sakho, ukuskena kwe-ID, izimodeli zomkhiqizo, noma izithombe zakho zangasese zihlala kumshini womunye umuntu, ngokuvamile amahora amaningi, kwesinye isikhathi kucushwa yizinqubomgomo ezingacacile zokugcinwa. Lesi siguquli asikaze silethe lutho. Umsebenzi wenzeka kusiphequluli sakho usebenzisa injini yesithombe efanayo isiphequluli esesivele isiyisebenzisa ukubonisa izithombe, ngakho ifayela lihlala kudivayisi lakho kusukela ekuqaleni kuze kube sekugcineni. Awukho ulayini olindile, akukho i-akhawunti, futhi akukho bha yokulayisha - futhi kuqhubeka kusebenza ngisho ne-network ixhumeke.
Izimo zangempela zokusebenzisa
Uthathe isithombe sesikrini se-PNG esingu-12 MB futhi udinga ukusithumela nge-imeyili - siguqule sibe i-JPG bese siwa siba usayizi ophathekayo. Umklami ukuthumele izithombe zomkhiqizo njenge-WEBP kodwa ithuluzi lakho lasendulo lokushaya isakhiwo lifunda i-PNG kuphela - zishintshe futhi ugcine ukungabonakali kuhlala njengoba kunjalo. Wakha iwebhusayithi esheshayo futhi ufuna wonke i-JPG ne-PNG kudlulwe njenge-WEBP ukunciphisa isikhathi sokulayisha. Uwakhiphile uphawu njenge-JPG ngephutha futhi walahlekelwa yingemuva engabonakali - phinda ukhiphe umqondo wokuqala njenge-PNG kunalokho. Ezithombeni zamafoni ezigcinwe ngefomethi ka-Apple, ithuluzi lethu le-HEIC ukuya ku-JPG lisingatha lelo simo eliqondile, futhi uma inhloso yakho iyifayela elincane nje hhayi ifomethi entsha, i-isicindezeli sezithombe siyalungela kangcono. Phequlula iqoqo eliphelele lama-mathuluzi ezithombe ukuze uthole okwengeziwe.
Imibuzo evame ukubuzwa
Izithombe zami ziyalayishwa ndawana thize?
Cha. Ukuguqulwa kwenzeka ngokugcwele kusiphequluli sakho kudivayisi lakho siqu. Isithombe sakho asikaze sithunyelwe kusiveva, ngakho sihlala siyimfihlo futhi ithuluzi liyasebenza ngisho nangaphandle kwe-inthanethi.
Ngizolahlekelwa ukungabonakali uma ngiguqula ngiye ku-JPG?
Yebo. I-JPG ayisekeli ukungabonakali, ngakho noma yiziphi izindawo ezingabonakali zigcwaliswa ngombala oqinile, ngokuvamile omhlophe. Uma udinga ukugcina ukungabonakali, guqula ube i-PNG noma i-WEBP kunalokho.
Yiliphi ifomethi elinikeza ifayela elincane kakhulu?
Ezithombeni, i-WEBP ngokuvamile iba ncane kakhulu, ilandelwa yi-JPG, kanti i-PNG ne-BMP zibe zinkulu kakhulu. Kwimidwebo eyisicaba, ulwazi lwenkampani (logos) namaphawu, i-PNG noma i-WEBP engalahlekelwa lutho yiyo engcono. I-BMP ayicindezelwe futhi ihlale iyinkulu kunazo zonke.
Ukuguqula i-WEBP ibe i-PNG kunciphisa ikhwalithi?
Cha. I-PNG ayilahlekelwa lutho, ngakho ilondoloza ngokunembile lokho i-WEBP okwakukuqukethe ngaphandle kokwengeza imikhawulo emisha. Ifayela le-PNG lizoba likhulu, kodwa ikhwalithi ebonakalayo ihambisana nomthombo.
Ngingayiguqula i-JPG ibuyele kwikhwalithi yayo yokuqala?
Cha. Ukucindezela kwe-JPG kulahlekelwa imininingwane ngokungasoze kubuyiseleke. Ukuguqula i-JPG ibe i-PNG kuyivimbela ekutheni ingabi mbi kakhudlwana, kodwa akukwazi ukubuyisela imininingwane esele yasuswa ukulondoloza kwangaphambili.
Kungani ngingasebenzisa i-BMP?
I-BMP igcina amaphikseli angacindezelwe njengoba enjalo, okusadingwa yizinye izinhlelo zendulo ze-Windows namathuluzi obunjiniyela. Ku-web ayisebenzi kahle ngoba amafayela makhulu kakhulu, kodwa iqinisekisa uhlaka lwephikseli olungathintekile.