Tahuri JPG Tuhinga o mua PNG

Tahurihia Tō JPG Tuhinga o mua PNG kōnae ngawari

Tīpakohia ō kōnae

*Ngā kōnae kua mukua i muri i ngā haora 24

Tahurihia kia 1 GB ngā kōnae mō te kore utu, ka taea e ngā kaiwhakamahi Pro te tahuri ki te 100 GB ngā kōnae; Waitohu inaianei

Tukuatu ana

Me pēhea te huri JPG Tuhinga o mua PNG

Hipanga 1: Tukuatu tō JPG ngā kōnae mā te whakamahi i te pātene i runga ake nei, mā te tōia me te whakataka rānei.

Hipanga 2: Pāwhiritia te pātene 'Tahuri' hei tīmata i te tahuritanga.

Hipanga 3: Tikiake i tō mea kua tahurihia PNG kōnae

JPG Tuhinga o mua PNG Ngā Pātai Auau mō te Tahuritanga

He pēhea te tahuri i a JPG ki PNG me te kore e ngaro te āhuatanga whakaahua?

Whakaata atu i tōna JPG me te whakarerekētanga e hoatu ana i te whakarei ake o te āhua-āhua mō PNG. Mō te kore ngaro PNG (PNG, TIFF, BMP) ka tiakina ia pītaki; mō te ngaro PNG (JPG, WebP) ka taea te whakarerekē i te take ā-hua i mua o te tāpiritanga. He ngaro te JPG: ka hurihia te whakaahua ki tētahi DCT, he nui, he waehere entropi, me te kāwae āhuatanga e whakahaere ana i te nui e whakawāteatia ana. Ka whakamahia e PNG te whakawhāititanga DEFLATE i runga i ngā raina tātari tātari, kia ora ai ia pikitia, tae atu ki tētahi kanikani ā-arawhiti 8-biti.

Ka taea e au te whiwhi mārama ina PNG te whakaahua?

E tautoko ana te āhua PNG i tēnei, engari kāore e taea e te tahuri te whakarerekētanga. Kāore he kanikani ā-arawhiti te JPG, nō reira ko ia pikitia tae atu ki te papamuri e tae ana ki te mārama katoa. Ka haere /removebackground/ i muri mai hei whakaiti i te kaupapa — kātahi ka whakarato ētahi mea hei rokiroki i te kanikani ā-arawhiti PNG. Ko PNG te kōwhiringa tika mō ngā whakaahua mata, ngā tohu, ngā toi raina me ētahi atu mea me ngā taitapa mārō, mārama rānei — kāore he whakawhāiti, kāore he tae.

Ka whakahōu te tahuritanga o JPG ki PNG te āhuatanga i ngaro?

Kāore. Ko ngā ahanoa whakawhāiti kua whakawhāititia ki roto i te JPG ko ngā raraunga pikitia noa iho ināianei, ā, ka tiaki i te PNG i rātou kia kore ai i te tango i a rātou. Ko te nuinga o te wā ka nui ake te faila, i ētahi wā he maha ngā wā nui ake. Ka tika tonu te mahi i mua i te whakarerekētanga, nā te mea kāore e whakawātea anō ngā whakarerekētanga i te whakatupuranga tuarua o te ngaronga i runga ake. Kāore he mārama a JPG, ka whakapeka anō i ia wā ka tiakina, ā, ka whakaputaina i te ātetetanga mārama i runga i te tae mārama me te kupu mārama.

Ka ora te tae CMYK o ahau i te tahuritanga ki PNG?

Ka tahuri ki te sRGB, nā te mea kāore he tikanga CMYK a PNG. Mō te whakamahinga mata, ko te mea tonu e hiahiatia ana e koe. Mō te tātuhi hokohoko, kāore — ka huri te nekehanga tauine i te āhua o te whakanaotanga o ngā tae mārō i runga i te tā, nā reira ka tukuna ki te tātuhi te taketake JPG kaua ko te PNG. He pūāhua whakaahua kino te PNG: ko te whakaahua i tiakina hei PNG, e rima ki te tekau ngā wā e nui ake ana i te whakaahua ōrite, pēnei i te JPG, i te WebP rānei.

E pupuri ana te PNG i te raraunga EXIF mai i tōku JPG?

E whakawhirinaki ana, ā, i te wāhi e noho ai te ūnga ki te whakatakoto i a ia - te tauira kāmera, ngā whakaritenga whakakite, te tītara me ngā taururuku GPS katoa e whakawhiti ana. Ko GPS te āpure e whakaaro ana: mēnā ka whakaputaina te whakaahua, ka whakamahia te kōwhiringa metadata-strip kia kore ai e whakapāpāho i te wāhi i hoatu ai te whakaahua. Ko JPG te paerewa JPEG mai i te tau kotahi mano e 1992, ā, i muri i ngā tekau tau e toru ko te āhua tonu o te nuinga o ngā kāmera me te nuinga o ngā whatunga e whakamahia ana mō ngā whakaahua.

Ka pupuri te tahuritanga o te tahuritanga JPG ki PNG?

Ka ora te mārama ina PNG, WebP, TIFF, GIF, SVG rānei te PNG. Ka whakarerekē te tahuri ki JPG i te kanikani ā-autōhiko ki tētahi papamuri mā. Mēnā e hiahiatia ana e koe te mārama i roto i te hua, ka ūngatia he mārama-mārama PNG i te wāhi o PNG=JPG. I hangaia a PNG i te tau kotahi mano e 1996 hei whakakapi kore whakawhiwhinga ki te GIF, ā, ka noho hei hanga whakaahua pātata kore ngaro o te Wīwī.

Ka ora te āhua o tōku tātai tae (sRGB / Adobe RGB / CMYK) mai i te JPG ki te PNG?

Ka whakamātauria ngā tātai tae ICC whakatinana mai i te JPG, ā, ka hono anō ki te PNG i reira te āhua o te tātai e tautoko ana i a ia (JPG, PNG, TIFF, WebP). Ko ngā āhua kāore i te tautoko i te tātai e hoki ana ki te sRGB, e pupuri ana i ngā tae i runga i te nuinga o ngā whakaaturanga o nāianei.

He aha mo te metadata EXIF ina tahuri JPG ki PNG?

Ko te EXIF o te kāmera (ISO, shutter, lente, GPS coordinates) e tiakina mā te pūmau i te wā o JPG → PNG ina tautokona e ngā āhuahira e rua ngā metadata. Ka whakamahia te kōwhiringa whaiaro hei whakakore i ngā metadata i mua i te whakataki mēnā e hiahiatia ana kia tiritiri ngā whakaahua me te kore tauwāhi.

Ka taea e au te tahuri-whakahaere i te maha o ngā JPG ngā pūranga ki PNG i tētahi wā?

He — ka tangohia e tātau he maha ngā pūranga JPG ki te rohe tāurunga, ā, ka whakatūtautau i a rātou i te taha kotahi. Ka whiwhi ngā kaiwhakamaori wātea ki te 100 MB ia pūranga; Kāore he kōpaka i ia pūranga, ā, ka haere tonu ngā kaimahi ōrite, nō reira ka oti te 200-pihi i raro i te rua minu.

He pēhea te ōrite o JPG ki PNG ki Photoshop / GIMP mō te mahi ōrite?

Mō te tahuri ā-tūturu o te āhua, ka whakahaeretia e tātau te pūtautau ōrite libpng / libjpeg-turbo / libwebp / ImageMagick e whakamahia ana e te kaiwhakawhanake papatono, me te āhuatanga pūtea ōrite. Ko te rerekētanga ko te whakahaere rōpū whakarara — ka whakatuwheratia e ngā taupānga papatono tētahi rārangi i tētahi wā; ka whakaaetia e tātau tētahi rōpū.

He aha te rongoā o te PNG tātau pūranga?

Ko te pūmau ko te 1:1 — e pupuri ana tōtou PNG i ngā ahu pikitia o te pūtake JPG. Mēnā e hiahiatia ana e koe te whakarea hei wāhanga o te tahuritanga, ka whakamahia /resize-image/ i muri i te tahuritanga, ka whakapā atu rānei ki te utauta /image-resize/.

He iti rawa te PNG me te kore ngā ahanoa e kitea ana?

Mō JPG / WebP, ko te āhuatanga 75-85 e whiwhi ana i te PNG 60-80% iti iho i te JPG me te kore rerekētanga mārama i te tawhiti tirohia noa iho. Mō te kore ngaro PNG (PNG, TIFF), e tūmanako ana kia iti iho ngā pūtea — i te nuinga o te wā 5-30% mā te whakawhāititanga pai ake / LZW.

JPG

Ka whakamahi ngā kōnae JPG i te kōpeketanga ngaronga kua arotauhia mō ngā whakaahua, kia iti ai ngā rahi kōnae me te pupuri tonu i te kounga tirohanga.

PNG

Ka tautokohia e ngā kōnae PNG te māramatanga, ā, ka whakamahia te kōpeketanga kore-ngaro, he mea tino pai mō ngā whakairoiro, ngā waitohu, me ngā hopu mata.