PNG

Wei Ji Bai Ke ,Zi You De Bai Ke Quan Shu

Ke Xi Shi Wang Lu Tu Xing
Portable Network Graphics

Tou Ming De 8Wei Yuan PNGTu Pian
Kuo Zhan Ming	.png
Hu Lian Wang Mei Ti Lei Xing	image/png
Lei Xing Dai Ma (Ying Yu :Type code)	PNG PNGf
Tong Yi Lei Xing Biao Shi	public.png
Kai Fa Zhe	W3C
Shou Ci Fa Bu	1996Nian 10Yue 1Ri , 29Nian Qian (1996-10-01)
Zui Xin Ban Ben	3.0 2025Nian 6Yue 24Ri , 7Ge Yue Qian (2025-06-24)
Ge Shi Lei Xing	Wu Sun Ya Suo
Kuo Zhan Wei	APNG JNG MNG
Biao Zhun	ISO 15948 RFC 2083
Mian Fei Ge Shi ?	Shi

Bian Xi Shi Wang Luo Tu Xing (Ying Yu :Portable Network Graphics,PNG)Shi Yi Chong Zhi Chi Wu Sun Ya Suo De Wei Tu Tu Xing Ge Shi ,Zhi Chi Suo Yin , Hui Du , RGBSan Chong Yan Se Fang An Yi Ji AlphaTong Dao Deng Te Xing . PNGDe Kai Fa Mu Biao Shi Gai Shan Bing Qu Dai GIFZuo Wei Gua He Wang Luo Chuan Shu De Ge Shi Er Bu Xu Zhuan Li Xu Ke ,Suo Yi Shou Yan Fan Ying Yong Yu Hu Lian Wang Ji Qi Ta Fang Mian Shang .

PNGLing Yi Ge Fei Zheng Shi De Ming Cheng Lai Yuan Wei Di Gui Suo Xie :"PNG is Not GIF". PNGDe Guan Fang Nian Fa Shi "Ping "(Ying Yu IPA:/pIng/;[Ping ] Shi Yi Guo Yu Fa Yin ),^[1]Dan Shi Duo Shu Ren Shi Dang Cheng San Ge Ying Wen Zi Mu Fen Kai Du . ^[2]

PNGTu Pian Da Duo Shu Du Shi Yong PNGZuo Wei Kuo Zhan Ming ,Qi Hu Lian Wang Mei Ti Lei Xing Wei image/png. ^[3]PNGYu 1997Nian 3Yue Zuo Wei Zhi Shi Xing RFC 2083Fa Bu ,Yu 2004Nian Zuo Wei ISO/IECBiao Zhun Fa Bu .

• Zhi Chi 256Se Diao Se Ban Ji Zhu Yi Chan Sheng Xiao Ti Ji Wen Jian
• Zui Gao Zhi Chi 24Wei Zhen Cai Se Tu Xiang Yi Ji 8Wei Hui Du Tu Xiang .
• Zhi Chi AlphaTong Dao De Tou Ming /Ban Tou Ming Te Xing .
• Zhi Chi Tu Xiang Liang Du De GammaXiao Zhun Xin Xi .
• Zhi Chi Cun Chu Fu Jia Wen Ben Xin Xi ,Yi Bao Liu Tu Xiang Ming Cheng , Zuo Zhe , Ban Quan , Chuang Zuo Shi Jian , Zhu Shi Deng Xin Xi .
• Zhi Chi Wu Sun Ya Suo .
• Jian Jin Xian Shi He Liu Shi Du Xie ,Gua He Zai Wang Luo Chuan Shu Zhong Kuai Su Xian Shi Yu Lan Xiao Guo Hou Zai Zhan Shi Quan Mao .
• Shi Yong CRCFang Zhi Wen Jian Chu Cuo .
• Yun Xu Zai Yi Ge Wen Jian Nei Cun Chu Duo Fu Tu Xiang .
• Zhi Chi HDRMo Shi .
• Zhi Chi Tian Jia ExifXin Xi .
• Zhi Chi Dong Hua Tu Pian Xian Shi .

1995Nian Zao Qi ,UnisysGong Si Gen Ju Ta Zai GIFGe Shi Zhong Shi Yong De LZWShu Ju Ya Suo Suan Fa De Ruan Jian Zhuan Li (Mei Guo Di 4558302Hao (Ye Mian Cun Dang Bei Fen ,Cun Yu Hu Lian Wang Dang An Guan ))Kai Shi Shang Ye Shou Fei . Wei Bi Mian Zhuan Li Ying Xiang ,Yong Yu Biao Xian Dan Zhang Tu Xiang De PNG, Yong Yu Biao Xian Dong Hua De Multiple-image Network GraphicsTu Xing Wen Jian Ge Shi Tong Shi Chuang Jian Chu Lai . 1999Nian 8Yue ,UnisysGong Si Jin Yi Bu Zhong Zhi Liao Dui Zi You Ruan Jian He Fei Shang Yong Ruan Jian Kai Fa Zhe De GIFZhuan Li Mian Fei Xu Ke ,Cong Er Shi PNGGe Shi Huo De Liao Geng Duo De Guan Zhu .

Zai PNGChuan Bo Guo Cheng Zhong ,Hen Duo Wang Luo Liu Lan Qi Jing Guo Hen Chang Shi Jian Cai Kai Shi Wan Quan Zhi Chi PNGGe Shi ;Ru Microsoft WindowsYu She De Internet ExplorerLiu Lan Qi Yi Zhi Dao 7.0Ban Cai Zhi Chi PNGGe Shi Zhong De Ban Tou Ming Xiao Guo ,Jiao Zao Qi De Ban Ben (Ru 6.0 SP1)Xu Yao Xia Zai Hotfix ^[4]Huo You Wang Zhan Ti Gong E Wai De ScriptQu Zhi Yuan . ^[5]Zhe Zao Cheng PNGGe Shi Bing Mei You De Dao Yan Fan De Ren Zhi .

• PNGDe 1.0Ban Ben Gui Fan Yu 1996Nian 7Yue 1Ri Fa Bu ,Hou Lai Cheng Wei RFC 2083Biao Zhun ,Bing Zai 1996Nian 10Yue 1Ri Cheng Wei W3CJian Yi .
• PNGDe 1.1Ban Ben Jin Xing Liao Bu Fen Xiao Fu Xiu Gai Bing Zeng Jia Liao San Ge Xin De Shu Ju Kuai Ding Yi ,Yu 1998Nian 12Yue 31Ri Fa Bu .
• PNGDe 1.2Ban Ben Zeng Jia Liao Ling Wai Yi Ge Shu Ju Kuai ,Yu 1999Nian 8Yue 11Ri Fa Bu .
• PNGDe 2.0Ban Ben Shi Guo Ji Biao Zhun (ISO/IEC 15948:2003),Bing Zai 2003Nian 11Yue 10Ri Zuo Wei W3CJian Yi Fa Bu . Zhe Ge Ban Ben Yu 1.2Ban Jin You Xi Wei Chai Bie .
  • Ci Wai Ye Chan Sheng Liao Ji Yu PNGDe Dong Hua Ge Shi :1996Nian 6Yue Ti Chu PNF(Portable Network Frame)Cao An ,Dang Nian 8Yue Gai Ming Wei MNG(Multiple-image Network Graphics),Dan You Yu Jiao Wei Fu Za ,Shi Xian Zhi Chi De Ruan Jian Jiao Shao . 2004Nian Mo ,PNGDe Dong Hua Kuo Zhan ----APNGChu Xian . Zhe Shi Yi Ge Xiang Dui Yu MNGGeng Jian Dan De Dong Hua Shi Xian Fang An ,Bu Shi Bie APNGGe Shi De PNGJie Ma Qi Zhi Shao Neng Gou Zheng Chang Hui Fang Di Yi Fu Pu Tong PNGHua Mian ,Xiang Fan Di De Dao Da Bu Fen Xian Shi Huo Bian Ji De Ruan Jian Zhi Chi .

• PNGDe 3.0Ban Ben Ze Yu 2025Nian 6Yue 24Ri Fa Bu ,Jiang Qian Shu De APNGKuo Zhan Na Ru Zheng Shi Biao Zhun ,Bing Jia Ru HDRMo Shi ,Zhi Chi HLGHe PQLiang Chong Ge Shi De Miao Shu Wen Jian . Huan Ke Tian Jia ExifXin Xi ^[6].

PNGTu Pian Zhu Yao You San Zhong Xing Bie Chu Cun

• PNG 8:Tu Pian Shi Yong 8 bitsLai Chu Cun ,Ke Yi Yong 2De 8Ci Fang Da Xiao Ge Zhong Lei Yan Se Lai Chu Cun Yi Zhang Hei Bai De Tu Pian . Ye Jiu Shi Shuo PNG 8Neng Chu Cun 256Chong Yan Se ,Yin Wei Yan Se Shao ,Dang An Ti Ji Ye Fei Chang Xiao ,Yi Zhang Tu Pian Ru Guo Yan Se Jian Dan ,Jiang Ta She Ding Cheng PNG 8De Tu Pian Shi Fei Chang Sheng Kong Jian He Shi De .
• PNG 24:Tu Pian Shi Yong 24bitsLai Chu Cun ,Yong San Ge 8bitsFen Bie Qu Biao Shi R(Hong ), G(Lu ), B(Lan )San Ge Tong Dao (Channel)De Shu Zhi . Ke Yi Biao Da 256Cheng Yi 256Cheng Yi 256=16777216Zhong Yan Se De Tu Pian ,Se Cai Feng Fu Du Geng Gao ,Dan Xiang Dui De Suo Zhan Yong De Kong Jian Ye Jiu Geng Da Liao .
• PNG 32:Tu Pian Shi Yong 32bitsLai Chu Cun ,Xiang Dang Yu PNG 24 Jia Shang 8bitsDe Tou Ming Yan Se Tong Dao ,Zong Gong You R(Hong ), G(Lu ), B(Lan ), A(Tou Ming )Si Ge Tong Dao . Tu Pian Neng Biao Shi De Se Cai Gen PNG 24Yi Yang Duo ,Bing Qie Huan Zhi Yuan 256Zhong Tou Ming Du ,Neng Rang Tu Pian Se Cai Geng Jia Feng Fu .

PNGTu Xiang Ge Shi Wen Jian You Yi Ge 8Zi Jie De PNGWen Jian Biao Shi (file signature or file header)Yu He 3Ge Yi Shang De Hou Xu Shu Ju Kuai (chunk)Ru :IHDR, IDAT, IENDDeng Zu Cheng .

PNGWen Jian Bao Gua 8Zi Jie Wen Jian Shu Ming (89 50 4E 47 0D 0A 1A 0A,Shi Liu Jin Zhi ),Yong Lai Shi Bie PNGGe Shi ,Suo You PNGTu Pian Dang An Nei Rong Kai Tou Du Hui You Zhe Yi Chuan header.

Shi Liu Jin Zhi	Han Yi
89	Yong Yu Jian Ce Chuan Shu Xi Tong Shi Fou Zhi Chi 8Wei De Zi Fu Bian Ma (8 bit data),Yong Yi Jian Shao Jiang Wen Ben Wen Jian Bei Cuo Wu De Shi Bie Cheng PNGWen Jian De Ji Hui ,Fan Zhi Yi Ran .
50 4E 47	PNGMei Ge Zi Mu Dui Ying De ASCII,Rang Yong Hu Ke Yi Shi Yong Wen Ben Bian Ji Qi Cha Kan Shi ,Shi Bie Chu Shi PNGWen Jian .
0D 0A	DOSFeng Ge De Huan Xing Fu (CRLF). Yong Yu DOS-UnixShu Ju De Huan Xing Fu Zhuan Huan .
1A	Zai DOSMing Ling Xing Xia ,Yong Yu Zu Zhi Wen Jian Xian Shi De Wen Jian Jie Shu Fu .
0A	UnixFeng Ge De Huan Xing Fu (LF). Yong Yu Unix-DOSHuan Xing Fu De Zhuan Huan .

PNGDing Yi Liao Liang Chong Lei Xing De Shu Ju Kuai :Yi Chong Shi PNGWen Jian Bi Xu Bao Han , Du Xie Ruan Jian Ye Du Bi Xu Yao Zhi Chi De Guan Jian Kuai (critical chunk);Ling Yi Chong Jiao Zuo Fu Zhu Kuai (ancillary chunks),PNGYun Xu Ruan Jian Hu Lue Ta Bu Ren Shi De Fu Jia Kuai . Zhe Chong Ji Yu Shu Ju Kuai De She Ji ,Yun Xu PNGGe Shi Zai Kuo Zhan Shi Reng Neng Bao Chi Yu Jiu Ban Ben Jian Rong .

PNGWen Jian Zhong ,Mei Ge Shu Ju Kuai Du You Si Ge Bu Fen Zu Cheng ,Ru Xia :

Ming Cheng	Zi Jie Shu	Shuo Ming
Chang Du (Length)	4Zi Jie	Zhi Ding Shu Ju Kuai Zhong Shu Ju Qu Yu De Chang Du ,Chang Du Bu Ke Chao Guo (231-1)Ge Zi Jie
Shu Ju Kuai Lei Xing Ma (Chunk Type Code)	4Zi Jie	Shu Ju Kuai Lei Xing Ma You ASCIIZi Mu (A-ZHe a-z)Zu Cheng De "Shu Ju Kuai Fu Hao "
Shu Ju Kuai Shu Ju (Chunk Data)	Ke Bian Chang Du	Chu Cun Shu Ju Kuai Lei Xing Ma Zhi Ding De Shu Ju
Xun Huan Rong Yu Jian Ce (CRC)	4Zi Jie	Chu Cun Yong Lai Jian Ce Shi Fou Dang An Chuan Shu You Wu De Xun Huan Rong Yu Ma

Guan Jian Shu Ju Kuai Zhong You 4Ge Biao Zhun Shu Ju Kuai :

• Wen Jian Tou Shu Ju Kuai IHDR(header chunk):Bao Han You Tu Xiang Ji Ben Xin Xi ,Zuo Wei Di Yi Ge Shu Ju Kuai Chu Xian Bing Zhi Chu Xian Yi Ci .
• Diao Se Ban Shu Ju Kuai PLTE(palette chunk):Bi Xu Fang Zai Tu Xiang Shu Ju Kuai Zhi Qian .
• Tu Xiang Shu Ju Kuai IDAT(image data chunk):Cun Chu Shi Ji Tu Xiang Shu Ju . PNGShu Ju Yun Xu Bao Han Duo Ge Lian Xu De Tu Xiang Shu Ju Kuai .
• Tu Xiang Jie Shu Shu Ju IEND(image trailer chunk):Fang Zai Wen Jian Wei Bu ,Biao Shi PNGShu Ju Liu Jie Shu .

Qi Yu Fu Zhu Shu Ju Kuai Lie Biao :

Shu Ju Kuai Shi Bie Fu Hao	Shu Ju Kuai Han Yi	Shu Ju Kuai Wei Zhi Xian Zhi
cHRM	Ji Se He Bai Se Dian Shu Ju Kuai	Fang Zai PLTEHe IDATZhi Qian
gAMA	Tu Xiang gShu Ju Kuai	Fang Zai PLTEHe IDATZhi Qian
sBIT	Yang Ben You Xiao Wei Shu Ju Kuai	Fang Zai PLTEHe IDATZhi Qian
bKGD	Bei Jing Yan Se Shu Ju Kuai	Fang Zai PLTEZhi Hou IDATZhi Qian
hIST	Tu Xiang Zhi Fang Tu Shu Ju Kuai	Fang Zai PLTEZhi Hou IDATZhi Qian
tRNS	Tu Xiang Tou Ming Shu Ju Kuai	Fang Zai PLTEZhi Hou IDATZhi Qian
pHYs	Wu Li Xiang Su Chi Cun Shu Ju Kuai	Fang Zai IDATZhi Qian
tIME	Tu Xiang Zui Hou Xiu Gai Shi Jian Shu Ju Kuai	Wu Xian Zhi
tEXt	Wen Jian Ji Ben Xun Xi Shu Ju Kuai	Wu Xian Zhi
zTXt	Ya Suo Wen Ben Shu Ju Kuai	Wu Xian Zhi
eXIf	ExifShu Ju Kuai	Fang Zai IHDRHe IENDZhi Jian , Dan Bu Neng Zai IDATKuai Zhi Jian
sCAL	(Zhuan Yong Gong Gong Shu Ju Kuai )	Fang Zai IDATZhi Qian
oFFs	(Zhuan Yong Gong Gong Shu Ju Kuai )	Fang Zai IDATZhi Qian
fRAc	(Zhuan Yong Gong Gong Shu Ju Kuai )	Wu Xian Zhi
gIFg	(Zhuan Yong Gong Gong Shu Ju Kuai )	Wu Xian Zhi
gIFt	(Zhuan Yong Gong Gong Shu Ju Kuai )	Wu Xian Zhi
gIFx	(Zhuan Yong Gong Gong Shu Ju Kuai )	Wu Xian Zhi

PNGTu Pian De Ya Suo Zhu Yao Fen You Liang Ge Jie Duan :

• Yu Jie Xi (Prediction)
• Ya Suo (Compression)

You Yu Ya Suo Fang Shi Zhu Yao You Yi Shang Liang Ge Jie Duan Gou Cheng ,You Hua Fang Xiang Ye Dui Ying Zhu Liang Ge Jie Duan . Zhen Dui Yu Jie Xi Jie Duan Zuo You Hua Zhu Yao De Xuan Ze Shi Qu You Hua Chai Fen Bian Ma Qi ,Rang Bian Ma Chu De Jie Guo Neng Chu Xian Jin Ke Neng Duo De Ling Zhi Huo Shi Xiang Tong De Zhi . Zhen Dui Ya Suo Jie Duan De You Hua Ze Shi Zhao Chu Geng Hao De DeflateSuan Fa ,Yi Huo De Geng Gao De Ya Suo Lu .

Zai Zhe Jie Duan Zhong ,Tu Pian Hui Zuo Xian Zuo Xie Yu Chu Li ,Yi Li Hou Xu Ya Suo . Mei Ci Hui Chu Li Tu Pian Zhong Mou Yi Xing (column)De Shu Ju ,Shou Xian Jing Guo Lu Bo Qi (Filter)Lai Chu Li Zhe Xie Shu Ju ,Mei Ge Xiang Su Dian (Pixel)Zai Bu Tong Tong Dao Zhong (Channel ex:RGB)De Shu Zhi Du Hui Jing Guo Lu Bo Qi Yun Suan ,Ran Jiu De Chu De Jie Guo Hui Jiao You Chai Fen Chu Li Qi Lai Zhong Xin Ji Suan Tong Dao Zhong De Shu Zhi . Chai Fen Chu Li Qi Hui Jiang Mu Qian Zhe Ge Xiang Su Dian Shang Tong Dao Zhong De Shu Zhi He Zhi Qian Huo Zhi Shang (EX:Zuo Bian Shang Fang )Xiang Su Dian Zuo Dui Bi ,Gen Ju Chai Yi Jin Xing Chai Fen Bian Ma . Ruo Shi Xiang Lin De Xiang Su Dian Zai Tong Dao Shang De Shu Zhi Fei Chang Jie Jin ,Jiu Hui De Chu Hen Duo 1,0,-1Zhe Zhong Hen Xiao De Zhi . Zheng Ge predictionJie Duan Yao Zuo De Shi Jiu Shi Zhao Dao Shi He De Chai Fen Bian Ma Qi ,Shi De Zui Zhong Chai Fen Bian Ma De Jie Guo Jin Ke Neng De Du Shi Zhong Fu Hen Xiao Huo Shi Ling De Zhi ,Zhe Yi Jie Duan De Jie Guo Hui Ying Xiang Dao CompressionJie Duan Zhong Neng Shi Xian De Ya Suo Lu .

Jing Guo Yu Jie Xi Jie Duan Zhi Hou ,Jiang Bian Ma Chu De Jie Guo Shu Chu Gei Deflate(Shi Yi Zhong Wu Sun Shu Ju Ya Suo Suan Fa ,Tong Shi Shi Yong Liao LZ77He Huffman CodingFang Fa ),You Qi Zhi Xing Zhen Zheng De Ya Suo Cao Zuo ,Zai Ci Jie Duan Hui Tong Guo LZ77He Huffman CodingFang Fa Lai Dui Tu Xiang Jin Xing Bian Ma ,Zui Hou Jiang Chu Li Hou De Tu Pian Jie Guo Bao Cun . Zui Zhong De Ya Suo Lu Zhu Yao Shou Dao Liang Fang Mian De Ying Xiang :

• Yu Jie Xi Jie Duan (Prediction)De Chu Li Jie Guo :Dui Yu RGBTong Dao Shu Zhi Xiang Jin De Xiang Su Qu Yu ,Ye Jiu Shi Bian Ma Jie Guo You Hen Duo Ling Zhi De Qu Yu ,Zai Ya Suo Jie Duan De Dang De Ya Suo Lu Hui Te Bie Gao ,Ruo Shi Xiang Lin Qu Yu De Yan Se Chai Yi Da ,Ze Ya Suo Xiao Guo Jiu Hui Da Da Zhe Kou .
• Deflate Mei Yi Xing De Pi Pei Qing Xing :Zai Zheng Ge Ya Suo Chu Li Guo Cheng Zhong Du Shi Yi Xing (column)Wei Dan Wei Lai Jin Xing Chu Li . Er Zai Chu Li Shu Ju De Guo Cheng Zhong ,Chu Li De Fu Hao Shu Bei Xian Zhi Zai 3-258Zhi Jian ,Huan Yan Zhi ,Zui Gao De Ya Suo Lu Ke Yi Da Dao 1032:1,Dang Chu Xian De Fu Hao Shu Xiao Yu 3Shi ,Jiu Ke Neng Hui Chu Xian Wu Fa Pi Pei De Qing Kuang . Yin Ci Tu Pian De Kuan Du Ye Hui Shi Yi Ge Ke Neng Ying Xiang Zui Zhong Ya Suo Xiao Guo De Yin Su Zhi Yi .

PNGYa Suo Ti Gong Liang Zhong Ya Suo Fang An

• Wu Sun Ya Suo (Lossless Compression):Shu Ju Jing Guo Ya Suo Zhi Hou ,Xin Xi Bu Shou Sun Shi ,Neng Gou Wan Quan Huan Yuan Zhi Ya Suo Qian De Mo Yang ,Tong Chang Ci Zhong Ya Suo Fang An De Ya Suo Lu You Yi Ding De Xian Zhi .
• You Sun Ya Suo (Lossy compression):Shu Ju Jing Guo Ya Suo Zhi Hou ,Xin Xi Shu Ju Hui He Yuan Shi Shu Ju Bu Tong ,Dan Jin Xian Yu Xie Wei Chai Ju ,Tong Chang Ci Zhong Ya Suo Fang An Neng Ti Gong Fei Chang Gao De Ya Suo Lu .

Mu Qian Da Bu Fen PNGDe Ya Suo Cai Yong Ji Yu LZ77Pai Sheng Suan Fa ,Shi De Ta Ya Suo Bi Lu Geng Gao ,Sheng Cheng De Wen Jian Ti Ji Geng Xiao ,Bing Qie Bu Sun Shi Shu Ju .

You Yu PNGYuan Ben De Wu Sun Ya Suo Fang An Zai Ya Suo Lu Shang You Yi Ding De Xian Zhi ,You Xie Kai Yuan Zhe Wu Fa Jie Shou Ji You De Ya Suo Lu ,Yin Ci Ji Yu PNGYuan Ben De Ya Suo Fang Shi Kai Fa Xin De You Sun Ya Suo Fang An ,Zai Gong Cheng Shang Yu De Dao Liao Yi Ding De Ying Yong . Li Ru TinyPNG,Gen Ju Guan Fang Gong Kai De Xin Xi ,Qi Li Yong Liao QuantizationDe Ji Shu Lai Shi Xian Ti Gao Ya Suo Lu ,Tong Guo He Bing Xiang Si De Yan Se Jiang 24Wei Yuan De PNGTu Pian Ya Suo Cheng Geng Xiao De 8Wei Yuan Tu Pian . Qi Zhong Geng Zhu Ming De PNGYou Sun Ya Suo Suan Fa pngquant,Zai GithubShang You Wan Zheng De Kai Yuan Dai Ma ,Tong Yang Ye Shi Shi Yong Liao Vector QuantizationLai Jian Shao Tu Pian Zhong Yan Se De Zhong Lei ,Zai Shi Liang Hua Guo Cheng Zhong Jiang Xiang Su Dian Gen Ju Yan Se Xiang Si Cheng Du Jin Xing Fen Zu ,Sui Hou Zu Nei De Xiang Su Tong Ji Chu Yi Ge Zhong Xin Yan Se Bing Jiang Suo You Zu Nei Xiang Su Du Ti Dai Wei Ci Zhong Xin Yan Se . Shi Liang Hua Hui Zao Cheng Tu Pian Shi Zhen ,Ru He Zai Ya Suo Lu Yu Tu Pian Zhi Liang Zhi Jian Qu De Yi Ge Qia Dao Hao Chu De Ping Heng Dian Shi Ge Zhi De You Hua De Fang Xiang .

• Yi Ban Qing Kuang Xia Jiang Jing Tai GIFTu Xiang Wu Sun Zhuan Huan Wei PNGHou Ke Yi Ya Suo Lu Hui Lue Wei Ti Gao (Qian Ti Shi Tong Yang Cai Yong 8Wei Suo Yin Mo Shi ).
• PNGKe Ti Gong Geng Da Yan Se Shen Du De Zhi Chi ,Bao Gua 24Wei (8Wei 3Tong Dao )He 48Wei (16Wei 3Tong Dao )Zhen Cai Se . Jia Ru AlphaTong Dao Hou Ke Jin Yi Bu Zhi Chi Mei Xiang Su 64Wei De Biao Shi .
• Chao Guo 8Wei Se Shen De PNGTu Xiang Zhuan Huan Wei GIFShi ,Tu Xiang Zhi Liang Hui You Yu Fen Se (Yan Se Shu Jian Shao )Er Xia Jiang .
• GIFYuan Sheng Zhi Chi Dong Tai Tu Xiang ,PNGCeng Zhi Neng Tong Guo Fei Biao Zhun Shi Xian ,Zai PNGDe Ji Chu Shang Ling You Fa Zhan Chu Zhi Chi Dong Hua De APNGHe MNGGe Shi . Zhi Zhi PNG3.0Ban Ben Kai Shi Yuan Sheng Zhi Chi Dong Tai Tu Xiang .

JPEGKe Yi Dui Zhao Pian (Huo Lei Si )Tu Xiang Sheng Cheng Geng Xiao De Wen Jian ,Zhe Shi You Yu JPEGCai Yong Liao Yi Chong Zhen Dui Zhao Pian Tu Xiang De Te Ding You Sun Bian Ma Fang Fa ,Zhe Chong Bian Ma Gua Yong Yu Di Dui Bi ,Tu Xiang Yan Se Guo Du Ping Hua ,Za Xun Duo ,Qie Jie Gou Bu Gui Ze De Qing Kuang Xia . Ru Guo Zai Zhe Chong Qing Kuang Xia Yong PNGDai Ti JPEG,Wen Jian Chi Cun Zeng Da Hen Duo ,Er Tu Xiang Zhi Liang De Ti Gao You Xian . Xiang Ying De ,Ru Guo Bao Cun Wen Ben ,Xian Tiao Huo Lei Si De Bian Yuan Qing Xi ,You Da Kuai Xiang Tong Yan Se Qu Yu De Tu Xiang ,PNGGe Shi De Ya Suo Xiao Guo Jiu Yao Bi JPEGHao Hen Duo ,Bing Qie Bu Hui Chu Xian JPEGNa Yang De Gao Dui Bi Du Qu Yu De Tu Xiang Shi Zhen . Ru Guo Tu Xiang Ji You Qing Xi Bian Yuan ,You You Zhao Pian Tu Xiang De Te Dian ,Jiu Xu Yao Zai Zhe Liang Chong Ge Shi Zhi Jian Quan Heng Yi Xia Liao . JPEGBu Zhi Chi Tou Ming Du .

You Yu JPEGShi You Sun Ya Suo ,Hui Chan Sheng Die Dai Shi Zhen ,Zai Zhong Fu Ya Suo He Jie Ma De Guo Cheng Zhong Hui Bu Duan Diu Shi Xin Xi Shi Tu Xiang Zhi Liang Xia Jiang . You Yu PNGShi Wu Sun De ,Bao Cun Jiang Yao Bian Ji De Tu Xiang Lai Shuo Geng Jia He Gua . Sui Ran PNGYa Suo Zhao Pian Tu Xiang Ye You Xiao ,Dan You Zhuan Men Zhen Dui Zhao Pian Tu Xiang She Ji De Wu Sun Ya Suo Ge Shi ,Li Ru Wu Sun JPEG2000He DNG. Zong De Lai Shuo Zhe Xie Ge Shi Du Bu Neng Zuo Dao Gua Yong Suo You Tu Xiang . Dui Yu Jiang Yao Fa Bu De Tu Xiang Ke Yi Bao Cun Cheng JPEG,Yong JPEGBian Ma Yi Ci Bu Hui Zao Cheng Ming Xian De Tu Xiang Shi Zhen .

JPEG-LSShi Yi Ge "Ji Hu "Wu Sun Ya Suo Ge Shi ,Xiang Dui Yu Shang Mian Ti Dao De You Sun JPEGYa Suo ,Ta De Zhi Ming Du Bu Gao . Ta Ke Yi Zhi Jie He PNGXiang Bi Jiao ,Shi Yong Yi Zu Biao Zhun De Ce Shi Tu Xiang . Zai Waterloo Repertoire ColorSet(Yi Zu Biao Zhun Ce Shi Tu Xiang )Xia ,JPEG-LSTong Chang Biao Xian Yao Bi PNGHao 10%-15%,Dan Qi Zhong You Yi Xie Tu Xiang PNGBiao Xian Ming Xian Geng Hao Yi Xie ,Da Yue 50%-75%. Suo Yi ,Ru Guo Zhe Liang Chong Ge Shi Du Zhi Chi Er Qie Dui Tu Xiang Wen Jian Da Xiao Hen Min Gan De Hua ,Ke Yi Yong Zhe Liang Chong Ge Shi Du Shi Shi ,He Tu Xiang Shu Ju Ben Shen You Bi Jiao Da Guan Xi .

TIFFShi Yi Ge Xiang Dang Duo Fang An Jie He De Ge Shi . Ta Yan Fan Yong Zuo Zhuan Ye Tu Xiang Bian Ji Ruan Jian Zhi Jian Tu Xiang Jiao Huan De Zhong Jian Ge Shi ,Yin Ci Ta Bu Duan Zhi Yuan Geng Duo Ying Yong Cheng Shi Suo Xu De Gong Neng ,Er Dui Ying Yong Cheng Shi Bu Guan Xin De Tu Xiang Cao Zuo Bu Fen Zhi Yuan Bu Duo . Zhe Ye Yi Wei Zhao Xu Duo Ying Yong Cheng Shi Zhi Neng Shi Bie TIFFDe Yi Ge Zi Ji ,Er Chan Sheng Geng Duo De Qian Zai Hun Yao Zhi Chu .

TIFFShi Yong De Zui Tong Yong De Wu Sun Ya Suo Suan Fa Shi LZW. Zhe Chong Suan Fa Zai GIFZhong Ye Zai Shi Yong ,Zhi Dao 2003Nian Yi Zhi Zai Zhuan Li Bao Hu Zhi Zhong . You Yi Chong TIFFBian Chong Shi Yong Yu PNGXiang Tong De Ya Suo Suan Fa ,Dan Shi Mei You Huo Xu Duo Zhuan Li Cheng Xu Suo Zhi Yuan . TIFFYe Ti Gong Liao Yi Chong Te Shu De Wu Sun Ya Suo Suan Fa ,Lei Si CCITT Group IV,Ke Yi Dui Er Zhi Tu Xiang (Bi Ru Chuan Zhen Huo Hei Bai Wen Ben )Bi PNGYou Geng Hao De Ya Suo Xiao Guo .

PNGZhi Zhi Yuan Fei Zi Zuo Cheng a,Er TIFFYe Zhi Yuan Lian He (Zi Zuo Cheng )a.

PNG3.0Ban Ben Cai Kai Shi Bao Han Qian Ru Shi EXIF(Ke Jiao Huan Tu Xiang Wen Jian Ge Shi )Tu Xiang Shu Ju De Biao Zhun ,Bi Ru Shu Ma Xiang Ji Pai De De Tu Xiang . Er TIFF,JPEG 2000, DNGDu Zhi Yuan EXIF.

Zao Qi De Liu Lan Qi Bu Zhi Yuan PNGTu Xiang ;JPEGHe GIFShi Zhu Liu Tu Xiang Ge Shi . You Yu GIFDe Yan Se Shen Du Xian Zhi ,Wang Ye Zhong De You Yan Se Guo Du De Tu Xiang Du Shi Shi Yong JPEG. Bu Guan Zen Yang ,JPEGYa Suo Du Hui Dao Zhi Tu Xiang De Qing Wei Mo Hu . Er PNGKe Yi Zuo Dao Zai Xiang Ying Yan Se Shen Du Xia De Jin Ke Neng Jing Que ,Tong Shi Bao Chi Tu Xiang Wen Jian Bu Da . PNGYi Jing Jian Jian Cheng Wei Yi Chong Dui Yu Xiao De Ti Du Tu Xiang De Jiao Hao De Xuan Ze ,Zhong Duo Liu Lan Qi Du Yi Jing Dui PNGYou Liao Hen Hao De Zhi Yuan .

• PNGWen Jian Ge Shi (Ye Mian Cun Dang Bei Fen ,Cun Yu Hu Lian Wang Dang An Guan )
• PNGGui Fan Di Er Ban (Ye Mian Cun Dang Bei Fen ,Cun Yu Hu Lian Wang Dang An Guan )(Ying Wen ),2003Nian 11Yue 10Ri W3CJian Yi
• PNGGui Fan Zui Xin Ban (Ye Mian Cun Dang Bei Fen ,Cun Yu Hu Lian Wang Dang An Guan )
• PNGGuan Fang Zhan (Ye Mian Cun Dang Bei Fen ,Cun Yu Hu Lian Wang Dang An Guan )(Ying Wen )
• PNGDe Gu Shi (Ye Mian Cun Dang Bei Fen ,Cun Yu Hu Lian Wang Dang An Guan )(Ying Wen )

Jian Suo Zi "https://zh.wikipedia.org/w/index.php?title=PNG&oldid=88849827"

Fen Lei :

• Tu Xing Wen Jian Ge Shi
• ISOBiao Zhun
• W3CBiao Zhun

Yin Cang Fen Lei :

• Han You Ying Yu De Tiao Mu
• You Lan Lian Que Wei Yi Chu Nei Bu Lian Jie Zhu Shou Mo Ban De Ye Mian