Guqula PNG kuya JPG

Guqula Eyakho PNG kuya JPG amafayela kalula

Khetha amafayela akho

*Amafayela asusiwe ngemva kwamahora angu-24

Guqula amafayela afinyelela ku-1 GB mahhala, abasebenzisi be-Pro bangaguqula amafayela afinyelela ku-100 GB; Bhalisa manje

Ukulayisha

Indlela yokuguqula PNG kuya JPG

Isinyathelo 1: Layisha eyakho PNG amafayela usebenzisa inkinobho engenhla noma ngokuhudula bese uphonsa.

Isinyathelo 2: Chofoza inkinobho ethi 'Guqula' ukuze uqale ukuguqulwa.

Isinyathelo 3: Landa i-version yakho JPG amafayela

PNG kuya JPG Imibuzo Evame Ukubuzwa Yokuguqulwa

Ngiguqula kanjani i-PNG ibe yi-JPG ngaphandle kokulahlekelwa ubuhle besithombe?

Layisha phezulu ihele lakho PNG futhi umguquli ufaka ukulungisa umgangatho okwaziyo ifomethi ye JPG. U JPG ongalahleki (PNG, TIFF, BMP) wonke ama-pixel agcinwa; u JPG ongelahleki (JPG, WebP) ungahlela umphumela womgangatho ngaphambi kokufaka ngezansi. I-PNG isebenzisa ukucindezeleka kwe-DEFLATE phezu kwemigqa yokuskena ehlolwe, ngakho wonke ama-pixel ahlala ngokugcwele, kanye ne-8-bit alfa channel ephelele. I-JPG ilahlekelwa yisimo: isithombe siguqulwa nge-DCT, silinganiselwe, futhi sikhonjiswa nge-entropiya, nge-nobhu wobude olawula ukuthi yini elahlekile.

Ingabe ngizolahlekelwa yikhwalithi eningi uma ngisuka ku PNG ngiye ku JPG?

Kukhwalithi engu-80-85 ushintsho alubonakali kude kakhulu kokubheka futhi ifayela liphansi ngo-60-80%. Ukwesaba ukuthi kuyindlela eyodwa: ukulondoloza kabusha i JPG phinda phinda ihlanganise ama-artefacts ngaso sonke isikhathi. Gcina i PNG njengenkosi futhi uphinde udale i JPG kusuka kuyo lapho ufuna ubukhulu obusha. I-PNG iyisinqumo esifanele sezithombe-skrini, amalogo, umdwebi we-line kanye nanoma yini eneziphetho eziqinile noma ezicacile — akukho ukusakaza, akukho umbala obandayo.

Ingabe ukuguqulwa PNG kuya ku JPG kugcina ukubukeka okucacile?

Ukubukeka okucacile kuhlala lapho JPG i-PNG, WebP, TIFF, GIF, noma i-SVG. Ukushintsha ku-JPG kuhlanganiswa isixhumi se-alpha esibhekene nesizinda esimhlophe. Uma ufuna ukubukeka okucacile esinqumweni, bheka ukubonakala okucacile okuqaphelayo JPG endaweni ye JPG=JPG. I-JPG iyisimo se-JPEG esijwayelekile kusukela ngo-1992, futhi ngemuva kweminyaka emithathu ihlala iyisimo esisetshenziswa amakhamera amaningi namanye amawebhusayithi asebenzisa ama-photos.

Yini mayelana ne-EXIF metadata uma uguqula PNG usuka ku-JPG?

Kuzo zonke izishintsho, ama-EXIF ama-camera afana nemodeli ye-camera nendawo ye-GPS afakwanga ku-JPG. Akukho sinqumo kule khasi sokugcina noma ukususa i-metadata, ngakho hlola imiphumela ngombonisi we-metadata uma kubaluleke.

Ingabe ngingenza ukuguqulwa kwe-batch kwe-PNG amafayela amaningi ku-JPG ngasikhathi sinye?

Amafayela amaningi emisebenzini eyodwa adinga iphrojekthi ekhokhelwa. Ukusetshenziswa okumahhala kuyisifayela esisodwa ngasinye sokuguqulwa, ukuguqulwa okufanayo ngehora. Kuphrojekthi ekhokhelwa ungangeza amafayela amaningi kumsebenzi owodwa, bese ulanda impendulo ngayinye yayo noma zonke ku-ZIP eyodwa.

Yini isixazululo sehele lami JPG?

Iphutha ngu 1:1 — JPG yakho igcina ama-pixels ama-dimensions we-PNG. Uma ufuna ukushintsha ubukhulu njengengxenye yokuguqulwa, sebenzisa /resize-image/ ngemuva kokuguqulwa, noma uyibeke nge /image-resize/ utility.

Ingabe amafayela ami PNG afihlakele ngesikhathi sokuguqulwa?

Yebo. Amafayela PNG alayishwe phezulu aphathwa kumaseva ethu okuguqula, akukho muntu obhekana nawo, futhi angeke ahlukaniswe. Ukulayishwa kanye nokuguqulwa kwe JPG kususwa ngokuzenzakalela cishe amahora angu-24 ngemuva kokuguqulwa, okushiya isikhathi sokulanda imiphumela. Bona /privacy/ ukufinyelela kunqubomgomo egcwele.

Kungani i-JPG yami eguqulwe ibe mkhulu noma ncane kunalokho engilindele?

A PNG nge-compression ekhona enamandla (JPG elahlekile) ivame ukukhula uma iphinde ikhodwe ku-lossless JPG (PNG, TIFF). A lossless PNG ivame ukuncipha kakhulu uma ihamba ku-JPG / WebP. Isilinganiso sixhomekeke kusithombe esiqukethwe — ama-photos acindezelwa ngendlela eyahlukileyo kunaleyo ye-line art. I-PNG iyifomethi yesithombe esibi: isithombe esigcinwe njenge-PNG sivame ukuba likhulu izikhathi eziyisithupha kuya kweziyishumi kunesithombe esifanayo njenge-JPG noma i-WebP. I-JPG ayinayo ukubukeka okucacile, ikhuphuka kancane ngaso sonke isikhathi lapho igcinwa kabusha, futhi ikhiqiza ukuvala okubonakalayo kumbala ophansi nombhalo oqinile.

PNG

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

JPG

Amafayela we-JPG asebenzisa ukucindezeleka okulahlekile okuhlanganisiwe ngezithombe, okunikeza ubukhulu befayela elincane ngenkathi kugcinwa isixazululo esibonakalayo.