Nkag siab txog Transparency hauv Cov Duab Digital

Transparency yog dab tsi?

Hauv cov duab digital, pob tshab txhais tau tias qee qhov pixels tuaj yeem ua ib feem lossis pom tsis pom. Thaum koj tso cov duab pob tshab rau ntawm cov xim tom qab - lub vev xaib, tsim qauv, lossis lwm daim duab - cov duab pob tshab qhia txhua yam nyob tom qab lawv tsis yog xim tawv.

Transparency yog qhov tseem ceeb rau cov logos, cov khoom txiav tawm, overlays, thiab txhua qhov sib xyaw uas koj xav kom koj cov ntsiab lus sib xyaw rau hauv cov ntsiab lus tshiab. Kev tshem tawm keeb kwm yav dhau los ua kom pom tseeb los ntawm kev ua kom pom qhov keeb kwm yav dhau los tsis pom.

Alpha Channel

RGB vs RGBA

Cov duab feem ntau siv RGB: txhua pixel muaj tus nqi Liab, Ntsuab, thiab Xiav uas txhais nws cov xim. Cov duab pob tshab ntxiv tus nqi thib plaub: Alpha. RGBA txhais tau tias Liab, Ntsuab, Xiav, thiab Alpha. Lub alpha channel txiav txim siab seb qhov opaque lossis pob tshab txhua pixel npaum li cas.

Alpha tus nqi

Alpha feem ntau khaws cia ua tus lej ntawm 0 txog 255 (lossis 0% txog 100%). 0 = tag nrho pob tshab (tsis pom). 255 = tag nrho opaque (khoom). Qhov tseem ceeb ntawm kev tsim ib nrab pob tshab - pab tau rau cov npoo muag, duab ntxoov ntxoo, thiab iav los.

Cov hom ntawv uas txhawb Transparency

PNG

PNG txhawb nqa tag nrho alpha (8-ntsis lossis 16-ntsis). Nws yog hom ntawv tshaj plaws rau cov duab pob tshab. PNG tsis poob, yog li cov npoo pob tshab nyob ruaj khov. Qhov no yog tus qauv export hom rau kev tshem tawm keeb kwm yav dhau.

WEBP

WEBP txhawb nqa pob tshab nrog ob qho tib si lossy thiab tsis muaj compression. Feem ntau tsim cov ntaub ntawv me dua PNG ntawm qhov zoo sib xws. Kev txhawb nqa loj hlob thoob plaws browsers thiab apps.

GIF

GIF txhawb tsuas yog binary pob tshab: ib pixel yog pob tshab lossis tag nrho opaque. Tsis muaj semi-pob tshab. Txwv rau 256 xim, yog li nws tsis zoo rau cov duab.

TIFF

TIFF txhawb nqa alpha raws thiab siv hauv kev ua haujlwm tshaj lij. Tsawg dua rau kev xa khoom hauv web vim muaj cov ntaub ntawv loj.

HEIC/HEIF

HEIC txhawb pob tshab thiab yog lub neej ntawd hom ntawm ntau iPhones. QuickRemove lees txais HEIC ua cov tswv yim thiab tuaj yeem tso cov txiaj ntsig pob tshab hauv PNG lossis WEBP.

Hom Ntawv Tsis Txhawb Kev Pom Zoo

JPG/JPEG tsis txhawb pob tshab. Cov cheeb tsam pob tshab feem ntau muaj xim xim (feem ntau dawb) thaum hloov los ntawm hom ntawv uas txhawb nqa alpha. Yog tias koj xav tau pob tshab, xa tawm raws li PNG lossis WEBP.

BMP tau txwv kev txhawb nqa alpha hauv qee qhov sib txawv tab sis tsis tshua siv rau cov duab pob tshab. Lo rau PNG lossis WEBP rau kev sib raug zoo thoob ntiaj teb.

Transparency ua haujlwm li cas hauv Kev Tsim & Web

Web

Cov browsers ua cov pob tshab PNGs thiab WEBPs hla txhua qhov keeb kwm yav dhau - dawb, xim, lossis gradient. Tus qauv checkerboard koj pom hauv qee tus neeg kho tsuas yog qhov taw qhia pom; nws tsis tshwm nyob rau hauv daim duab kawg.

Tsim Software

Cov cuab yeej zoo li Photoshop, Figma, thiab Canva txhawb cov txheej txheem nrog pob tshab. Qhov chaw pob tshab cia cov khaubncaws sab nraud povtseg. Export li PNG (los yog WEBP) los khaws cov pob tshab thaum tsiv cov cuab tam ntawm cov apps.

Luam tawm

Kev luam ntawv tsis muaj "pob tshab" tib yam - koj tuaj yeem luam tsis tau dab tsi. Rau kev luam ntawv, pob tshab qhov chaw yog sab laug li "knockout" (tsis muaj number case) los yog sau nrog cov xim tom qab xaiv. Tham nrog koj tus kws kho mob sau ntawv.

Kev Ntseeg Tsis Zoo

"White background = pob tshab"

Tsis yog. Ib tug tom qab dawb yog opaque dawb. Qhov tseeb pob tshab txhais tau tias tsis muaj xim - lub pixel tsis pom. Qee cov neeg pib tsis meej pem lub nraub qaum dawb nrog pob tshab; lawv txawv.

"Tag nrho cov duab tawm tswv yim txhawb pob tshab"

Tsis yog. JPG yeej tsis txhawb qhov pom tseeb. Siv PNG lossis WEBP thaum koj xav tau.

"Transparency nce cov ntaub ntawv loj heev"

PNG cov ntaub ntawv nrog pob tshab tuaj yeem loj dua JPG, tab sis alpha channel nws tus kheej tsis tas li ob npaug ntawm qhov loj. Compression pab. WEBP feem ntau ua tiav cov ntaub ntawv pob tshab me dua li PNG.

QuickRemove thiab Transparency

QuickRemove yog Windows desktop app uas tsim cov duab pob tshab los ntawm kev tshem cov keeb kwm yav dhau. Nws tso tawm PNG (thiab tuaj yeem ua haujlwm nrog WEBP) kom khaws tag nrho alpha. Koj cov ntawv txiav tuaj yeem muab tso rau hauv ib qho keeb kwm yav dhau hauv cov cuab yeej tsim, cov vev xaib, lossis cov ntawv luam tawm. Txhua qhov kev ua haujlwm tshwm sim hauv zos - cov duab yeej tsis tawm hauv koj lub PC.