Tahuri JPG Tuhinga o mua PNG

Tahurihia Tō JPG Tuhinga o mua PNG kōnae ngawari

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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 au i te JPG ki te PNG me te kore e ngaro te āhuatanga whakaahua?

Whakataki i tōna pūranga JPG me te whakarerekētanga e hoatu ana i te whakarei ake o te āhua o te āhua mo PNG. Mō te kore ngaro PNG (PNG, TIFF, BMP) ka tiakina ia pikoseta; mō te ngaro PNG (JPG, WebP) ka taea te whakarerekē i te take ā-waiho i mua o te tāpiri. 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 mārō. Ka haere /image-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, i whakawhiwhia ki raro i ngā whakaroatanga.jpg,.jpeg, me.jfif, 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 i te JPG ki te 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 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 te āhua o te tae o te āhua o te tae (sRGB / Adobe RGB / CMYK) ki te JPG ki te PNG?

Embedded ICC color profiles are read from JPG and re-attached to the PNG output where the format supports it (JPG, PNG, TIFF, WebP). Formats without profile support fall back to sRGB, which keeps colors consistent across most modern displays.

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

E pupuritia ana te EXIF o te kāmera (ISO, shutter, lente, GPS coordinates) mā te pūmau i te wā JPG → PNG ina tautokona e ngā āhuahira e rua te metadata. Ka whakamahia te kōwhiringa whaiaro hei whakakore i te 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 pūranga JPG ki PNG i te wā kotahi?

He — ka tangohia e tātau ētahi JPG ngā pūranga ki te rohe tāpiri, 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 ā-tahi, nā reira ka oti te 200-pitanga i raro i te rua minu.

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

Mō te tahuritanga ā-tūturu o te āhua, ka whakarewaina e tātau te pūtautau ōrite libpng / libjpeg-turbo / libwebp / ImageMagick e whakamahia ana e te kaiwhakawhanake papamuri, me te ōritetanga o te huaputa. Ko te rerekētanga ko te whakahaere rōpū whakatata - ka whakatuwheratia e ngā taupānga papamuri tētahi pūranga i tētahi wā; ka whakaaetia e tātau tētahi rōpū.

He aha te rongoā o te tāu PNG?

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 kia whakarea hei wāhanga o te tahuritanga, ka whakamahia /resize-image/ i muri i te tahuritanga, ka whakapāpā rānei ki te /image-resize/.

He iti rawa te PNG ki te whiwhi i te kore mea e kitea?

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 ki ngā pūtea iti iho — 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.