Tshintsha JPG kuya JPEG

Guqula Eyakho JPG kuya JPEG amafayela kalula

Khetha amafayela akho

*Amafayela asusiwe ngemva kwamahora angu-24

Tshintsha amafayela mahhala, Pro abasebenzisi bangaguqula amafayela amakhulu kakhulu; Bhala manje

Ukulayisha

Indlela yokuguqula JPG kuya JPEG

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

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

Isinyathelo 3: Landa i-version yakho JPEG amafayela

JPG kuya JPEG Imibuzo Evame Ukubuzwa Yokuguqulwa

Ngiyiguqula kanjani i-JPG ibe yi-JPEG ngaphandle kokulahlekelwa ubuhle besithombe?

Layisha phezulu ihele lakho JPG futhi umguquli ufaka ukulungisa umgangatho okwaziyo ifomu le JPEG. Ukungabi nalutho JPEG (PNG, TIFF, BMP) wonke ama-pixel agcinwa; ukungabi nalutho JPEG (JPG, WebP) ungalungisa umphumela womgangatho ngaphambi kokulayisha. I-JPG ilahlekelwa yisimo: isithombe siguqulwa nge-DCT, silinganiselwe, futhi sikhonjiswa nge-entropiya, nge-nobhu wobude olawula ukuthi yini elahlekile. I-bitstream ifana ne-.jpg: DCT-based lossy compression, ngokuvamile nge-4:2:0 chroma subsampling, ifakwe ku-JFIF noma Exif header.

Ingabe JPG kuya ku JPEG ukuguqulwa kugcina ukubukeka okucacile?

Ukubukeka okucacile kuqhubeka uma JPEG i-PNG, WebP, TIFF, GIF, noma SVG. Ukushintsha ku-JPG kwenza i-alpha channel ibe mhlophe. Uma ufuna ukubukeka okucacile esinqumweni, bheka ukubonakala okucacile okuqaphelayo JPEG endaweni ye-JPEG=JPG. I-JPEG iyisimo esifanayo ne-JPG — isibonisi esiyisithupha siyisisekelo, futhi isibonisi esiyisithathu sikhona kuphela ngenxa ye-DOS 8.3 isinqumo segama lefayela.

Yini mayelana ne-EXIF metadata uma uguqula JPG kuya ku JPEG?

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

Ingabe ngingakwazi ukushintsha amafayela amaningi JPG abe JPEG 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 esizobe sikhona kuhele JPEG?

Okuzenzakalelayo yi-1:1 — JPEG yakho igcina ama-pixels alinganayo we-JPG. Uma ufuna ukuguqula ubukhulu njengengxenye yokuguqulwa, sebenzisa /resize-image/ ngemuva kokuguqulwa, noma uyibeke nge /image-resize/ utility.

Ingabe amafayela ami JPG afihlakele ngesikhathi sokuguqulwa?

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

Kungani i-JPEG yami eguqulwe ikhula noma incane kunalokho engilindele?

A JPG nge-compression ekhona enamandla (JPG elahlekile) ivame ukukhula uma iphinde ikhodwe ku-lossless JPEG (PNG, TIFF). A lossless JPG ivame ukuncipha ngokujulile uma ihamba ku-JPG / WebP. Ukulingana kuxhomekeke kusithombe sesithombe - ama-photos acindezelwa ngokuhlukile kusuka ku-line art. I-JPG ayinayo ukubukeka okucacile, ihamba kancane ngaso sonke isikhathi lapho igcinwa kabusha, futhi ikhiqiza ukuvala okubonakalayo kumbala ophansi nombhalo oqinile. I-JPEG ihlanganisa wonke ama-JPG alinganiselwe — akukho i-alpha, ukulahleka kosuku lokuzalwa ku-re-save — nge-noise engeziwe yesoftware ephatha izixhumanisi ezimbili ngokuhlukile.

Ingabe ngisebenzisa i-JPEG eguqulwe ngebhizinisi?

Yebo. Ukuguquka kuyisimo sokuguqulwa - ilungelo lokushicilela kusithombe sihlala kuwe (noma ophethe isithombe kumthombo JPG). Sifaka i-watermark, i-metadata stamp, futhi sicela i-license ngaphezulu kwe-JPEG output.

JPG

Amafayela e-JPG asebenzisa ukucindezela okulahlekile okwenzelwe izithombe, okunikeza osayizi abancane bamafayela ngenkathi kugcinwa ikhwalithi yokubuka.