Kodi Kusintha kwa PNG imasintha bwanji ma dimensions?
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Concretely, pixels ndi resampled ndi Lanczos wochotsa ndi kulemba m'mbuyo losslessly, choncho chokha inu kuwononga ndi deta kuti mwamsanga sangakhale m'malo m'ma pixels pang'ono; palibe kuwonjezera ndi encoder pa pamwamba. You give it a target width, a target height or a percentage, and it works from the original rather than from a previously resized copy.
Kodi ndingatani kuti ndizisunga kusiyana kwa mavidiyo, kapena kuletsa kukula kwa zithunzi?
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Both. Lock the ratio and one dimension is derived from the other, which is what you want almost always. Unlock it and you get exactly the numbers you typed, at the cost of stretching — useful for a fixed slot, wrong for a photograph.
Kodi mtundu woyamba umakhudza zotsatira za kusintha kwa kukula?
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It does. PNG ndi lossless DEFLATE ndi 8-bit alpha channel ndi 16-bit kuwala, kotero kuti si nthawi zonse amawononga pa re-kupulumutsa koma amapeza lalikulu pa zithunzi za zinthu. That is what decides whether shrinking the file is purely a question of pixels or also a question of re-encoding.
Kodi pali chinachake chokhacho cha PNG chomwe ndingawone?
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Yes — palibe slider yabwino yosayenera - PNG imayenda m'mphepete mwa maulendo a bit-exactly, choncho chinthu chokhacho chomwe chimasintha mtengo wanu ndi kukula kwa fayilo. Kuyenera kutsimikiziridwa kuti mubwezeretse fayilo yomwe simungathe kubwezeretsa.
Kodi ndi chiyani cholakwika chofala kwambiri pamene mukusintha kukula kwa PNG images?
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Upscaling. Kukula sikungayambitse mfundo zosadziwika zomwe sizikuwonetsedwa, choncho zotsatira zake ndi mtundu wolimba wa mtundu woyamba ndi kukula kwakukulu. Kawirikawiri, sinthani kukula kwa chithunzicho kuchokera pazomwe muli nazo, ndipo sinthani kukula kwake kamodzi kokha, osati m'madera.
Kodi ndiyenera kulenga maudindo ati?
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Match the slot it will live in. A full-width web hero rarely needs more than 1920 pixels wide, a content image 1200, a thumbnail 400, and doubling those numbers covers high-DPI screens. Anything beyond that is bytes nobody sees.
Kodi ndingapeze chiyani pa Kusintha kwa PNG?
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PNG, BMP ndi TIFF ndi mafomu a raster osatha omwe amagwira ntchito moyenera, ndipo mabungwe othamanga (JPG, WebP, GIF) amagwira ntchitonso ngati mukufuna kuwagwiritsa ntchito pamodzi. TIFFs osiyanasiyana amapezeka ndikuyang'aniridwa patsamba ndi tsamba.
Kodi pali malire a kukula kwa fayilo pa Kusintha kwa PNG?
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Yesani: maakaunti aulere amapanga zithunzi mpaka 25 MB; mabungwe osatha kuwononga amawononga malirewo mofulumira kuposa zithunzi, chifukwa palibe chomwe chimatulutsidwabe. Ngati muli pamwamba pa izi, kusinthidwa kwa PNG kumayamba nthawi zambiri kumatha kukwanira - BMP ndi nthawi yambiri ya zaka makumi asanu ndi awiri ndi kukula kwa chithunzi chofanana ndi PNG.
Kodi Kusintha kwa PNG idzachepetsa mtundu wa PNG images wanga?
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Sichoncho. A lossless kuchokera round-trips bit-exactly, kotero ngati inu mosabisa akufuna kwa lossy kutulutsa mtundu pixels amene anabwerera ndi pixels amene anapita mu. Izi ndi chifukwa chakuti zonse kutsatira ntchito mu izi banja pamene inu mwakhala kusinthira.
Kodi ndingagwiritse ntchito Kusintha kwa PNG pa PNG images angapo nthawi imodzi?
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Yes — kutsitsa set ndi iwo kusonkhana mofanana pansi pa imodzi set of settings. Lossless owona ndi zikuluzikulu, kotero lalikulu gulu ndi kugwirizana ndi kutsitsa wanu galimoto kuposa ndi kusonkhana yekha.
Kodi alpha channel kupulumuka?
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Ndiko. PNG ndi TIFF zimagwiritsa ntchito ma channels a 8-bit alpha ndipo zimasungana mpaka pamapeto. Zimakonzedwa ngati mwasankha mtundu womwe sumakhala ndi ma channels alpha, ndipo m'njira imeneyi ma pixels owoneka bwino amaphatikizidwa pa mthunzi wobiriwira.
Kodi Kusintha kwa PNG imawononga chilichonse?
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No. Kusintha kwa PNG imayenda mwaulere popanda akaunti ndipo siyiwonjezera madzi. Fayilo imachotsa ntchito za ogwira ntchito pambuyo poti mutsitsa, ndipo palibe chilichonse chokhudza chithunzicho.
