Sinthani SVG ku PNG

Sankhani kukula koyamba lomwe mudzawonetse, chifukwa ichi ndi mapeto a fayilo yosagwirizana ndi resolution. SVG imasungidwa ngati njira za matematiki ndipo imawoneka yolimba pa kukula kulikonse; PNG ndi gridi yokhazikika ya pixel, ndipo kukulitsa kwake pambuyo pake kumatha kusinthidwa. Kutumiza kunja kwa kukula koyamba ngati kuli koyenera kwa skrini ya DPI yotsika. SVG imawoneka bwino pa kukula kulikonse, imatha kusinthidwa, imatha kufunidwa komanso kusinthidwa ngati malemba oyera, ndipo nthawi zambiri ndi gawo la kukula kwa PNG yofanana. PNG anapangidwa mu 1996 monga patent-free kuchotsa kwa GIF, ndi anayamba webusaiti default lossless chithunzi mtundu.

Mu SVG, malemba ndi malemba anzeru — kusankhidwa, kufufuzidwa ndi re-styleable, ndipo amafuna font kuti azikhalapo kapena embedded kuti aonedwe monga analonjeza. Kusintha kuchokera SVG amasintha kuti malemba mu pixels kapena mu malemba a dokumento kutengera cholinga; kusintha ku SVG amapereka okha malemba anzeru ngati chiyambi anali ndi malemba latsopano.

Palibe pixel deta, palibe. Both formats kusungira chithunzi popanda lossy kusamvana, kotero chithunzi chimene chimatuluka ndi yofanana ndi imodzi yomwe inapita mu ndi kusintha angagwiritsidwe ntchito mobwerezabwereza. zimene kusintha ndi kukula kwa fayilo, ndi zimene ntchito kuyenda - kuwala m'lifupi, embedded profiles, ma layers ndi animation onse anathandiza mosiyana pakati lossless mtundu.

Kuwala kwamkati kumapezeka pamene PNG ndi PNG, WebP, TIFF, GIF, kapena SVG. Kusintha kuti JPG kumadula nyanja ya alpha pazenera lofiira. Ngati mukufuna kuwala kwamkati m'chithunzicho, dinani pa PNG yokhala ndi kuwala kwamkati m'malo mwa PNG=JPG.

Ma profiles a ICC a ICC amawerengedwa kuchokera ku SVG ndipo amaphatikizidwanso ku PNG komwe mtundu umathandizira (JPG, PNG, TIFF, WebP). Ma formats osagwirizana ndi ma profiles amabwerera ku sRGB, zomwe zimasunga mitundu yogwirizana ndi ma displays ambiri amakono.

EXIF ya kamera (ISO, shutter, lens, GPS coords) imasungidwa mwanjira yosasinthika pa SVG → PNG pamene mitundu iwiri imathandizira metadata. Pezani njira yosatsegulira kuti muchepetse metadata panthawi yotsitsa ngati mukufuna kugawana zithunzi popanda kuwonetsetsa kuti zili pamalo oyenera.

Inde - timangoyika mafayilo ambiri a SVG ku gawo lotsitsa ndipo timawaika m'gulu limodzi. Ogwiritsa ntchito aulere amalandira 100 MB pa fayilo; Premium siyimakhala ndi fayilo ya fayilo ndipo imagwira ntchito zambiri, chifukwa chake 200-image batch imakhala yomaliza m'maola awiri.

Kuti tisinthe mtundu woyenera timagwiritsa ntchito njira yofanana ya libpng / libjpeg-turbo / libwebp / ImageMagick yomwe wolemba desiki amagwiritsa ntchito, ndi mtundu wofanana wa zotsatira. Kusiyana ndi kuwongolera kwa mayunitsi ozungulira - mapulogalamu a desiki amatsegula fayilo imodzi panthawi imodzi; timavomereza mayunitsi.

Choyambirira ndi 1:1 — PNG yanu imasunga kukula kwa pixels ya chiyambi SVG. Ngati mukufuna kusintha kukula kwa chithunzi ngati gawo la kusintha, kugwiritsa ntchito /resize-image/ pambuyo posintha, kapena kugwirizana ndi /image-resize/ ntchito.

Kwa JPG / WebP, mtundu wa 75-85 umapeza PNG 60-80% wamtali kuposa SVG popanda kuwonekera panthawi yowonera. Kwa PNG yopanda malire (PNG, TIFF), mutha kuyembekezera kupulumutsa pang'ono - nthawi zambiri 5-30% pogwiritsa ntchito kutsitsa bwino / LZW. PNG ndi kusankha koyenera kwa zithunzi, malogo, line art ndi chilichonse ndi zosalimba mapiko kapena kuwala - palibe kuyimba, palibe kuwala band.

Ndikoyenera - mafayilo a SVG omwe amatulutsidwa amachitidwa m'mawu osiyana ndi omwe amagwira ntchito ndipo amasungidwa m'maola ochepa. Sitingawerenge, sitisunga nthawi yayitali kapena sitigawana deta ya pixel.