Buyisela ubukhulu JPEG

Isikali JPEG images kuze kube yisiphi isilinganiso

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Ukuguqula ubukhulu bezinto ezikhethwayo:

Ububanzi (px)

Ubude (px)

Gcina isilinganiso sesimo

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Ukulayisha

Indlela yokuguqula ubukhulu JPEG

1 Layisha phezulu i-JPEG images oyifunayo ukuguqulwa usayizi wayo — sebenzela kusuka ku-original enkulu onayo endaweni yokukopela okwenze wancipha kabili.

2 Ngenisa ububanzi obufunayo, ubude obufunayo noma iphesenti, futhi ushiye ukuvala isilinganiso sesimo esivulekile ngaphandle kokuthi ufuna ukudlulisa ngokuzimela.

3 Sebenzisa ukuguqula ubukhulu; yonke ihele eqenjini lithathwa kulapho lifuna khona ngesinqumo esifanayo.

4 Layisha phezulu ihele eliguqulwe isilinganiso JPEG, noma ihele lonke lihlanganise njengehele elilodwa.

Buyisela ubukhulu JPEG Imibuzo Evame Ukubuzwa

Ingabe ifomethi yomsuka ithinta imiphumela yokuguqula ubukhulu?

Isebenza. I-JPEG iyi-codec efanayo ne-JPG ngaphansi kwesiqiniseko eside — i-DCT pipeline efana, amathebulethi okulinganisela afana, akukho okushintshayo nge-pixels ngegama lefayela. Lokhu kusho ukuthi ngabe ukuncipha kwehele kuyisimangalo se-pixels noma simangalo sokuphinde ubhale kabusha.

Ingabe kukhona okuthile okukhethekile ku JPEG okufanele ngibhekane nalo?

Yebo — i.jpeg ne.jpg izixhumanisi ziyi-bitstream efanayo, ngakho akukho okuthile lapha okuzosebenza ngokuhlukile ku-.jpg — igama lefayela kuphela elishintshayo. Kufanele ukuhlola ngaphambi kokuguqula ubukhulu behele, ngeke ukwazi ukulivuselela.

Yini iphutha elivame kakhulu uma ushintsha ubukhulu JPEG images?

Ukuphakama. Ukukhululwa akukwazi ukusungula imingwane engakaze ithathwe, ngakho-ke imiphumela iyisiguqulo esilula sokuqala esingubukhulu obukhulu. Qaphela ushintsho lwesayizi ngezansi kusuka kumthombo omkhulu onawo, futhi ushintshe isayizi kabili ngaphezu kokwehla.

Yini izilinganiso okufanele ngizibeke njengenjongo?

Uzofana nesiteshi esizohlala kuso. Umdlali wewebhu ogcwele ububanzi angeke afune okungaphezu kuka-1920 pixels ububanzi, isithombe sezinto ezingaphakathi 1200, ithumbnail 400, futhi ukudubula lezi nombolo kuzoba ne-high-DPI screens. Noma yini engaphezu kwalokhu yi-bytes akukho muntu obona.

Ingabe ngizosebenzisa Buyisela ubukhulu JPEG ku JPEG images amaningi ngasikhathi sinye?

Yebo. Thola isethulo esigcwele endaweni yokulayisha bese zihamba ngokufanayo nezilungiselelo ezifanayo - lokhu kuyisizathu esiyinhloko sokwenza lokhu kubrowser ngaphezu kwefayela elilodwa ngasikhathi sinye kumhleli. Ama-akhawunti amahhala aqhuba ifayela elilodwa ngasikhathi sinye; i-pass lifts that.

Yini ekwenzeke ku-EXIF nedatha yeprofayili yombala?

Ikhamera EXIF (ISO, i-shutter, i-lens, GPS) neprofayili efakwe ngaphakathi ye-ICC idluliselwa ngokuzenzakalela, ngoba ukushiya iprofayili kwenza umbala ushintshe uma ufaka kabusha. Sebenzisa ukhetho lokufihla ukususa i-metadata ngaphambi kokulayisha uma uhlela ukushicilela ifayela.

Ingabe Buyisela ubukhulu JPEG ibiza noma yini?

No. Buyisela ubukhulu JPEG ikhululekile ngaphandle kwe-akhawunti, akukho uphawu lwamanzi ku-output futhi akukho mnyango wokubhalisa phambi kokulanda. Ukulayisha kususwa ngokuzenzakalela isikhathi esincane ngemuva komsebenzi ophelile.

Ingabe kunesilinganiselo sobukhulu behele ku Buyisela ubukhulu JPEG?

Yebo: ama-akhawunti amahhala asebenza ngezithombe kuze kube yi-5 MB ngayinye, ehlanganisa ngokuyinhloko yonke ikhamera JPG nesithombe sefoni; umsebenzi ukwenziwa yi-libjpeg-turbo ne-libwebp, ama-library afanayo umhleli wedesktop uxhumana nawo. Amafayela amakhulu yizinto ezincane ezizokuvimbela ukungena ku-free level, futhi umkhawulo uhele ngalinye hhayi iqembu ngalinye.

Kungani i PNG site i host Buyisela ubukhulu JPEG?

PNG.to ifakwe ngaphansi kwefomethi oyisebenzisayo uma ungakwazi ukulahlekelwa yi-pixel: ayilahleki, ikwazi ukubhala, futhi yisinqumo esilungile sezithombe-skrini, izibonisi, umdwebo we-line kanye nanoma yini eneziphetho ezinzima. Isithombe somsebenzi sincane kakhulu isikhashana: abantu bafika ukushintsha ifomu futhi bashiye isithombe esidinga ubukhulu obuhlukile, ubunzima obuhlukile noma ifomu elihlukile. Ukuhamba Buyisela ubukhulu JPEG ku-upload pipeline efanayo, ubukhulu obufanayo be-caps kanye ne-akhawunti efanayo yisizathu esigcwele ukuthi ikhona ngaphezu kwe-tab yesi-4.

Yini okufanele ngiyenze ngemiphumela uma i Buyisela ubukhulu JPEG iqediwe?

Umguquli kule ndawo uhambisa izithombe ku-PNG, JPG, WebP, GIF ne SVG — okuwusuku oluzothatha isigqibo mayelana nokubukeka okucacile. Lolu hlelo luyisinqumo abantu abaningi befika kuso, futhi ukwenze ngemuva kwe-Buyisela ubukhulu JPEG ngaphezu kokungaphambili kusho ukuthi ukuguqulwa kusebenza kusuka kuhele okuphelelwe isikhathi.

Ingabe Buyisela ubukhulu JPEG lapha ithuluzi elifanayo lezindawo ezifanayo ezisebenza?

Ama-engine ahlukaniswe — ama-library afanayo, abasebenzi abafanayo, ama-limits afanayo. Okunye okuhlukile yi-advice, futhi i-advice lapha iqala kusuka kuqiniso elilodwa mayelana nefomethi lendawo ibizwa ngemuva: Akukho sinqumlisi somgangatho esingakwazi ukukhohlwa — i-PNG ihamba ngezinyawo ngokucophelela, ngakho into eyodwa kuphela eguqula izindleko zakho yisayizi yefayela. I PNG site icabanga ukuthi i PNG iyindawo efanele yokufinyelela futhi lapho ayikhona, futhi ukuthi uhlolo lungcono kuneqhosha.

Ngidinga i-akhawunti, futhi yini egcinwa?

Akukho akhawunti, futhi akukho okugcinwa: ukuthunyelwa kususwa abasebenzayo ngemuva komsebenzi oqediwe, futhi akukho okuzokwenziwa, okudwetshwe noma okusetshenziswa nganoma yini enye. Ama-akhawunti amahhala akhona ngembali nenani leqembu, hhayi ukufinyelela.