Sinthani TIFF ku PNG

Amapepuka, nthawi zonse, kukhala chithunzi chimodzi chophatikizidwa. Momwe zimaphatikizidwa, masks, ma layers osinthika ndi mawu osasinthika onse amatulutsidwa ku pixels omaliza chifukwa PNG sichimakhala ndi chilengedwe chokhala nawo. Tengani TIFF ngati wogwira ntchito wamkulu ndipo gwiritsani ntchito PNG mwakhama ngati kutumiza kunja. TIFF imagwira ntchito ndi CMYK, 16-bit deepness, embedded ICC profiles ndi multi-page documents, zomwe ndi zomwe zimafunikira zosindikiza ndi zosunga zobwezeretsera. PNG ndi woipa chithunzi mtundu: chithunzi anapulumutsidwa monga PNG ndi routinely asanu mpaka makumi asanu nthawi yaing'ono kuposa chithunzi chimodzimodzi monga JPG kapena WebP.

Imakhala yosinthidwa kukhala sRGB, chifukwa PNG siyimakhala ndi njira ya CMYK. Pogwiritsa ntchito chophimba, izi ndi zomwe mukufuna. Pogwiritsa ntchito chophimba cha malonda, sichingakhale choncho — kusintha kwa gamut kumasintha momwe mabala osatumizirana amawonekera pa chophimba, choncho itumiza chophimba cha TIFF choyambirira kuposa PNG.

Popanda malire, yeah, komweko TIFF ndi Tagged Image File Format kuchokera 1986, ndipo ndi mtundu wa skanning, kufalitsa ndi archiving makampani standardized pa.

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. TIFF ndi chonyamula zambiri kuposa codec: likhoza kunyamula uncompressed, LZW, ZIP kapena ngakhale JPEG deta, pa mpaka 32 bits pa channel, ndi masamba ambiri mu fayilo imodzi. PNG amagwiritsa ntchito DEFLATE kusamvana pa scanlines zofiltered, choncho aliyense pixel amapulumuka moyenera, kuphatikizapo 8-bit alpha channel.

Kuwala kumatha kupezeka pamene mukuyenda ku PNG, WebP, TIFF, GIF, kapena SVG. Kusintha kwa JPG kumadula chingwe cha alpha pambuyo pa khungu loyera - ngati mukufuna kuwala, gwiritsani ntchito mtundu wowala womwe umadziwa kuwala kuposa PNG.

Ma profiles a ICC a ICC amawerengedwa kuchokera ku chiyambi TIFF ndipo amaphatikizidwanso ku PNG komwe mtundu umathandizira (JPG, PNG, TIFF, WebP). Ma formats osagwirizana ndi ma profiles amabwerera ku sRGB.

EXIF ya kamera (ISO, shutter, lens, GPS) imasungidwa mwanjira yosasinthika panthawi ya TIFF → PNG yosinthira pamene mitundu iwiri imathandizira metadata. Pezani njira yopezera ufulu kuti muchepetse metadata pambuyo potsitsa ngati mukufuna kugawana zithunzi popanda geolocation.

Yai - titha kutsitsa mafayilo ambiri a TIFF ku gawo lotsitsa ndipo timawaika m'gulu limodzi. Ogwiritsa ntchito aulere amalandira 100MB 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 wokha, tigwiritsa ntchito libwebp / ImageMagick yomweyo yomwe wolemba desiki agwiritsa ntchito, ndi mtundu wofanana. Kusiyana ndi kuti zida za desiki zimatsegula fayilo imodzi nthawi imodzi; timavomereza masamba ndi kuwayendetsa mofanana.

Mtundu woyambirira ndi 1:1 — PNG wanu wakunja ali ndi pixels zofanana ndi zomwe zili TIFF. Pezani /resize-image/ mbali yapadera pambuyo pa kusintha ngati mukufuna kuchepetsa kapena kuwonjezera kukula ngati gawo la ntchito.

Kwa JPG / WebP, mtundu wa 75-85 umapeza fayilo ya 60-80% yocheperako kuposa yochokera ku TIFF popanda kuwonekera kwa kuwonekera kwa kutalika kwa kutalika. Pofuna kukwaniritsa zolinga zosatha (PNG, TIFF), muyenera kuyembekezera kupulumutsa pang'ono - nthawi zambiri 5-30% pogwiritsa ntchito kutsitsa bwino / LZW.