Tahuri WebP Tuhinga o mua PNG

Kāore. Ko ngā ahanoa whakawhāiti kua whakawhāititia ki roto i te WebP 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. 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. Kei te WebP tonu te waeine tuarua i waho o te kaiwhaiwāhi — kāore e whakaaetia e ngā rerenga mahi tātai, ngā hanganga Tari tahito me ētahi whare tātari.

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 te WebP te āhua whakaahua o Google 2010, i hangaia mai i te kaituhituhi VP8, ā, i whakaritea kia whakakapia i te JPG, PNG me te GIF i te kotahi.

Ko te tāruatanga tuatahi anake e ora ana, nā te mea he āhua tūturu te PNG kāore he wāhi hei rokiroki i te toenga. Mēnā he mea hira te whakatangitanga, ka ūngatia tētahi hanga e whakatangi ana, ka tahuri rānei ki tētahi kāwai ataata, ā, ka pupuri i te nekeneke. 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.

Ka ora te mārama ina haere ki PNG, WebP, TIFF, GIF, SVG rānei. Ka whakarerekē te tahuri ki JPG i te kanikani ā-autōhiko ki tētahi papamuri mā - mēnā e hiahiatia ana e koe te mārama, ka ūngatia tētahi hanga mārama-mārama i te wāhi o PNG.

Ka whakaakona ngā tātai tae ICC whakawaitara mai i te pūtake WebP, ā, ka hono anō ki te huaputa PNG i reira te āhua 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 pupuritia ana te EXIF o te kāmera (ISO, shutter, lens, GPS) mā te pūmau i te wā o te tahuritanga WebP → PNG ina tautokona e ngā āhua rua te metadata. Ka whakamahia te kōwhiringa whaiaro hei whakakore i te metadata i mua i te whakataki mēnā e hiahia ana kia tirohia ngā whakaahua me te kore tauwāhi.

He — ka tangohia e tātau he maha ngā pūranga WebP ki roto i te rohe whakaata, ā, ka whakatūtautautia rātau i te taha kotahi. Ka whiwhi ngā kaiwhakamaori wātea ki te 100MB 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.

Mō te tahuritanga āhuahira māmā, ka whakarewaina e tātau te pūtautau ōrite libpng / libjpeg-turbo / libwebp / ImageMagick e whakamahia ana e te kaiwhakawhanake papamuri, me te āhuatanga ōrite. Ko te rerekētanga ko ngā utauta papamuri e whakatuwheratia ana i tētahi pūkete i tētahi wā; ka whakaaetia e tātau tētahi rōpū, ā, ka whakarewaina i te āhua kotahi.

Ko te whanonga tōmua ko te 1:1 — he ōrite ngā ahu o ngā pūwhitinga o tōtou PNG ki te pūtake WebP. Ka whakamahia tētahi hipanga /resize-image/ motuhake i muri i te tahuritanga mēnā e hiahiatia ana e koe te whakaiti, te whakawhānui rānei hei wāhanga o te rerenga mahi.

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

He — e whakarewaina ana ngā pūranga WebP i whakarewaina i roto i ngā kaimahi takitahi, ā, ka tangohia i roto i ngā minu. Kāore anō tātau ki te whakaako, ki te rokiroki, ki te tiritiri rānei i te raraunga pikitia. Ko te kaupapahere whaiaro katoa me te matapihi tautuhi i te /privacy/.