Tshintsha JPG ukuba JPEG

Guqula Eyakho JPG ukuba JPEG iifayile ngokulula

Khetha iifayile zakho

*Iifayile zicinyiwe emva kweeyure ezingama-24

Tshintsha iifayile simahla, Pro abasebenzisi bangaguqula iifayile ezinkulu kakhulu; Bhalisa ngoku

Iyalayisha

Indlela yokuguqula JPG ukuba JPEG

Inyathelo 1: Layisha eyakho JPG iifayile usebenzisa iqhosha elingasentla okanye ngokutsala nokuwisa.

Inyathelo lesi-2: Cofa iqhosha elithi 'Guqula' ukuze uqalise ukuguqula.

Inyathelo lesi-3: Khuphela i-converted yakho JPEG iifayile

JPG ukuba JPEG Imibuzo Ebuzwa Rhoqo Ngokuguqula

Ndiyiguqula njani i-JPG ibe yi-JPEG ngaphandle kokulahlekelwa umgangatho womfanekiso?

Layisha phezulu ifayile yakho JPG kwaye umguquli usebenzise umgangatho owaziyo wefomati efanelekileyo ye JPEG. Ukungabikho kolahleko JPEG (PNG, TIFF, BMP) yonke ipixel igcinwa; ukungabikho kolahleko JPEG (JPG, WebP) ungalungisa umgangatho womsebenzi phambi kokukhuphela. I-JPG ilahlekile: umfanekiso uguqulwa nge-DCT, u-quantized, kunye ne-entropiy-coded, ngeqhosha lomgangatho elilawula ukuba kuphi okuninzi okulahlekileyo. Uthungelwano lwee-bit lufana ne-.jpg: DCT-based lossy compression, ngokuqhelekileyo nge-4:2:0 chroma subsampling, olujikelezwe kwi-JFIF okanye kwi-Exif header.

Ingaba uguqulelo JPG ukuya JPEG lugcina ukubonakala?

Ukubonakala ngaphaya kuqhubeka xa JPEG i-PNG, WebP, TIFF, GIF, okanye SVG. Ukutshintsha kwi-JPG kugubungela isiqhagamshelanisi se-alpha phantsi kokungasemva omhlophe. Ukuba ufuna ukubonakala ngaphaya kwiziphumo, cwangcisa ukubonakala ngaphaya okuziyo JPEG endaweni ye-JPEG=JPG. I-JPEG ifana ne-JPG — uluhlu lweeleta ezine luyaqala, kwaye eli letha lithathu likhona kuphela ngenxa ye-DOS 8. 3 umda wegama lefayili.

Yintoni malunga ne-EXIF metadata xa uguqula JPG ukuya JPEG?

Kwiziguqulelo ezininzi, iimayile ze-EXIF zekhamera ezinjengemodeli yekhamera kunye nendawo ye-GPS azithunyelwe kwi-JPEG. Akukho mmiselo kule phepha ukugcina okanye ukususa i-metadata, ngoko khangela isiphumo ngombonisi we-metadata ukuba kubaluleke.

Ndingaguqula iifayili ezininzi JPG zibe JPEG ngaxeshanye?

Iifayile ezininzi kumsebenzi omnye zifuna inkqubo ehlawulweyo. Ukusetyenziswa okukhululekileyo yifayile enye ngoguqulelo, uguqulelo olunye ngeyure. Kwinkqubo ehlawulweyo ungadibanisa iifayile ezininzi kumsebenzi omnye, emva koko ulayishe impumelelo nganye kwiyo okanye zonke kwi ZIP enye.

Uphi ubungakanani obuzakubakho kwifayili yam JPEG?

Okumiselweyo ku 1:1 — JPEG wakho ugcina ubungakanani be-pixels yomthombo JPG. Ukuba ufuna ukuguqula ubungakanani njengenxalenye yokuguqula, sebenzisa /resize-image/ emva kokuguqula, okanye uyibeke kwi- /image-resize/ utility.

Ingaba iifayile zam JPG zifihlakeleyo ngexesha lokuguqulwa?

Ewe. Iifayile ezilayishwe phezulu ze JPG ziqhubekekiswa kwiseva yethu yokuguqula, akukho mntu ujonge phezulu, kwaye azisasazwanga. Ukukhuphela kunye nokuguqulwa kwe JPEG kususwa ngokuzenzekelayo malunga neyure ezili-24 emva kokuguqulwa, oshiya ixesha lokulayisha ezantsi iziphumo. Bona /privacy/ kwinkqubo epheleleyo.

Kutheni i JPEG yam eguqulweyo ikhula okanye incinci kuneleyo ndiyifumeneyo?

A JPG nge-compression enamandla ekhoyo (i-lossy JPG) ihlala ikhula xa iphinde ikhowudiwe kwi-lossless JPEG (PNG, TIFF). I-lossless JPG ihlala ikhula ngokugqithisileyo xa isiya kwi-JPG / WebP. Uthelekiso luxhomekeke kwizinto eziqulethe umfanekiso - iimifanekiso zicofa ngokuhlukileyo kumfanekiso womgca. I-JPG ayinabukhali, ikhupha ngaphezulu xa igcinwa kwakhona, kwaye ivelisa ukutshixa okubonakalayo kumbala othambileyo nombhalo oqaqambileyo. I-JPEG ibelana ngazo zonke izithintelo ze-JPG — akukho alpha, ulahleko lokuzalwa kwi-re-save — kunye noxinzelelo oluthe kratya lwesoftware ephatha izithuba ezimbini ngokuhlukileyo.

Ndingasebenzisa i-JPEG eguqulweyo ngokurhweba?

Ewe. Uguqulelo luguqulelo lwefomati - ilungelo lokushicilela kwizinto eziqulethe umfanekiso lihlala kuwe (okanye umntu owenzayo kumcebo JPG). Sidibanisa akukho phawu lwamanzi, akukho phawu lwe metadata, kwaye sicela akukho layisensi ngaphezulu kwe JPEG imveliso.