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PNG 32bppå¤‰æ› | ã—ã‡åº«
ãªã«ã“ã‚Œ ç”»åƒãƒ•ã‚¡ã‚¤ãƒ«ã‚’32bppå½¢å¼ã®PNGã«å¤‰æ›ã™ã‚‹ãŸã‚ã ã‘ã®ãƒ„ãƒ¼ãƒ«ã§ã™ã€‚ Twitterã«ã‚¢ãƒƒãƒ—ãƒãƒ¼ãƒ‰ã—ã¦ã‚‚JPEGå¤‰æ›ã•ã‚Œãªã„PNGã‚’ä½œæˆã§ãã¾ã™(2016/02/21ç¾åœ¨)ã€‚ ãƒ€ã‚¤ã‚¢ãƒã‚°ã‹ã‚‰ã®èªã¿è¾¼ã¿ã€ã‚³ãƒ”ãƒšã€ãƒ‰ãƒ©ãƒƒã‚°ã‚¢ãƒ³ãƒ‰ãƒ‰ãƒãƒƒãƒ—ã§æ“ä½œã§ãã¾ã™ã€‚ Twitterã®æŠ•ç¨¿æ¬„ã¸ç›´æŽ¥ãƒ‰ãƒ©ãƒƒã‚°ã‚¢ãƒ³ãƒ‰ãƒ‰ãƒãƒƒãƒ—ã‚‚å¯èƒ½ã§ã™ã€‚ å‹•ä½œç’°å¢ƒ .NET Framework 4 Client Profile ä»¥é™ã‚’å°Žå…¥æ¸ˆã¿ã® Windows æ›´æ–°å±¥æ´ ver. 0.1 (2016/02/21) å…¬é–‹ ç¯€æ“ç„¡ãä½¿ã†ã®ã¯é¿ã‘ã¾ã—ã‚‡ã† PNGã¯é‡ããªã‚ŠãŒã¡ãªã®ã§ã€å¸¯åŸŸã®æµªè²»ã€è¡¨ç¤ºé€Ÿåº¦ã®ä½Žä¸‹ã€é€šä¿¡æ–™é‡‘ã®å¢—åŠ ã«ç¹‹ãŒã‚‹å ´åˆãŒã‚ã‚Šã¾ã™ã€‚ ã‚¢ãƒ¼ãƒˆä½œå“ãªã©ã€ç”»è³ªãŒç‰¹ã«é‡è¦ãªã‚±ãƒ¼ã‚¹ã«çµžã£ã¦ãŠä½¿ã„é ‚ãã“ã¨ã‚’ãŠå‹§ã‚ã—ã¾ã™ã€‚ PNGã¨ã€(é«˜å“è³ªã§å‡ºåŠ›ã•ã‚ŒãŸ)JPEGã®é•ã„ã¯å¤šãã®æ™®é€šã®äººã«ã¯ åˆ†ã‹ã‚Šã¾ã›ã‚“ ã€‚ JPEGã§æŠ•ç¨¿ã™ã‚‹
rikuo 2016/05/20
Twitter

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retouch

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ç”»åƒå‘ã‘ Accept ãƒ˜ãƒƒãƒ€ãƒ¼ãŒç°¡ç´ åŒ–ã•ã‚Œã¾ã—ãŸ | Firefox ã‚µã‚¤ãƒˆäº’æ›æ€§æƒ…å ±
Firefox ã¯å¾“æ¥ã€ç”»åƒå‘ã‘ Accept HTTP ãƒ˜ãƒƒãƒ€ãƒ¼ã®å€¤ ã¨ã—ã¦ image/png,image/*;q=0.8,*/*;q=0.5 ã‚’é€ä¿¡ã—ã¦ã„ã¾ã—ãŸã€‚PNG ç”»åƒã®æ™®åŠã«ã‚ˆã‚Šç¾æ™‚ç‚¹ã§ã“ã®å€¤ã¯ã•ã—ã¦æ„å‘³ã‚’ãªã•ãªããªã£ãŸã“ã¨ã€ã¾ãŸ W3C ã®ã‚µã‚¤ãƒˆã§ SVG ã®ä»£ã‚ã‚Šã« PNG ç”»åƒãŒ Firefox ã«é…ä¿¡ã•ã‚Œã¦ã—ã¾ã†ã¨ã„ã†äº’æ›æ€§å•é¡ŒãŒè¦‹ã¤ã‹ã£ãŸã“ã¨ã‹ã‚‰ã€Firefox 47 ä»¥é™ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã¯ Safari ã¨åŒæ§˜ã« */* ã‚’é€ä¿¡ã™ã‚‹ã‚ˆã†ã«ãªã‚Šã¾ã—ãŸã€‚Firefox ãŒ WebP ç”»åƒå½¢å¼ã«å¯¾å¿œ ã—ãŸå ´åˆã«ã¯ã€ãŠãã‚‰ã image/webp,*/* ã«å¤‰æ›´ã•ã‚Œã¾ã™ã€‚
rikuo 2016/03/18
PNGç”»åƒãŒãƒ€ãƒ¡ãªç’°å¢ƒã£ã¦ä»Šã‚‚æ®‹ã£ã¦ã„ã‚‹ã®ã‹ãªã€‚

firefox

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é€éŽPNGã‚’SVG+JPGã«å¤‰æ›ã™ã‚‹ã‚¹ã‚¯ãƒªãƒ—ãƒˆ
witten by DEFGHI1977@xboxlive å¤‰æ›å‰(é€éŽPNGç”»åƒ) ãƒ•ã‚¡ã‚¤ãƒ«: ã‚µã‚¤ã‚º:Byte å¤‰æ›å¾Œ(SVG+JPGç”»åƒ) JPGå“è³ª:% ã‚µã‚¤ã‚º:Byte(%) ã“ã‚Œã¯ä½•ï¼Ÿ æœ¬ã‚¹ã‚¯ãƒªãƒ—ãƒˆã¯ï¼Œé€éŽPNGç”»åƒã‚’åŒç‰ã®SVGç”»åƒã«å¤‰æ›ã™ã‚‹ã‚‚ã®ã§ã™ï¼Žå…ƒç”»åƒã‚’ã‚ˆã‚Šè»½å¿«ãªJPGç”»åƒã¨ã—ã¤ã¤ï¼Œé€éŽéƒ¨ã‚’å®šç¾©ã§ãã‚‹ã“ã¨ã“ã¨ã‹ã‚‰æ˜¨ä»Šæ³¨ç›®ã‚’é›†ã‚ã¦ã„ã‚‹ãƒ†ã‚¯ãƒ‹ãƒƒã‚¯ã§ã™ï¼Žæœ¬ã‚¹ã‚¯ãƒªãƒ—ãƒˆã§ã¯å…ƒç”»åƒã‚’ãƒˆãƒªãƒŸãƒ³ã‚°ã—ã¦ã„ã‚‹ä»–ï¼Œãƒžã‚¹ã‚¯ç”»åƒã‚’8éšŽèª¿(3bit)ã®PNGç”»åƒã¨ã—ã¦ã„ã‚‹ã®ã§ï¼Œé€éŽéƒ¨ã®å½¢çŠ¶ã‚’ç¶æŒã—ã¤ã¤ãƒ•ã‚¡ã‚¤ãƒ«ã‚µã‚¤ã‚ºã‚’å¤§å¹…ã«ç¸®å°ã™ã‚‹ã“ã¨ã«æˆåŠŸã—ã¦ã„ã¾ã™ï¼Ž â€»ä¼¼ãŸã‚¹ã‚¯ãƒªãƒ—ãƒˆã¨ã—ã¦ã¯ZorroSVGãŒã‚ã‚Šã¾ã™ãŒï¼Œã“ã¡ã‚‰ã§ã¯filterè¦ç´ ã‚’ä½¿ã£ã¦ã„ã¦è¦‹ãŸç›®ä¸Šã¯ï¼Œä¼¼ãŸã‚ˆã†ãªã‚‚ã®ã§ã™ï¼ŽãŒï¼Œãƒžã‚¹ã‚¯ç”»åƒãŒJPGå½¢å¼ãªã®ã§ï¼Œå“è³ªã‚’è½ã¨ã™ã«ã¤ã‚Œå¢ƒç•Œéƒ¨ã®ãƒŽã‚¤ã‚ºãŒç›®ç«‹ã¡ã‚„ã™ããªã‚Šã¾ã™ï¼Žã“ã®ç‚¹ã‚’æ”¹è‰¯ã—ãŸã‚‚ã®ãŒã“ã®ã‚¹ã‚¯ãƒªãƒ—
rikuo 2014/11/06
SVG

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PNG

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performance

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ZorroSVG - Put a Mask on it
The small print ZorroSVG has some minor pitfalls you should be a aware of: It only runs on browsers that support SVG 1.1 - which all the latest browsers do. Right now there are some subtle brightness differences in semi-transparent areas (maybe you can spot them in the example image's soft shadow). They might be gamma or color-profile related and I am still trying to improve on this. Some (older)
rikuo 2014/10/31
é€éŽPNGç”»åƒã‚’JPEGã¨SVG(filterè¦ç´ ã‚’ä½¿ã£ãŸ)ã«å¤‰æ›ã—ã¦è»½é‡åŒ–ã™ã‚‹ã€‚

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pngquant â€” lossy PNG compressor
pngquant is a command-line utility and a library for lossy compression of PNG images. The conversion reduces file sizes significantly (often as much as 70%) and preserves full alpha transparency. Generated images are compatible with all web browsers and operating systems. Features High-quality palette generation using a combination of vector quantization algorithms. Unique adaptive dithering algor
rikuo 2013/12/12
PNG

performance

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software
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PNGãƒ•ã‚¡ã‚¤ãƒ«ã‚’æ›¸ãå‡ºã™æ™‚ã«ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ¬ãƒ¼ã‚¹PNGã«ã™ã‚‹ã¨ã€ãƒ•ã‚¡ã‚¤ãƒ«ã‚µã‚¤ã‚ºå¢—ãˆã‚‹ã‘ã©ã€è¡¨ç¤ºã®ä½“æ„Ÿã¯é€Ÿããªã‚‹ã€‚ã¾ãŸã€ã‚¦ã‚§ãƒ–ãƒšãƒ¼ã‚¸ã«ãŠã„ã¦ã¯æœ€åˆã«ç”»åƒã®å¤§ãã•åˆ†ã ã‘ç¢ºä¿ã•ã‚Œã‚‹ã®ã§ã€ãƒªãƒ•ãƒãƒ¼(ãƒ¬ã‚¤ã‚¢ã‚¦ãƒˆ)ã‚’æŠ‘æ¢ã§ãã‚‹ã€‚ãƒ¬ã‚¹ãƒãƒ³ã‚·ãƒ–ãƒ»ã‚¤ãƒ¡ãƒ¼ã‚¸ã¨ã¾ã§ã¯è¨€ãˆãªã„ã‘ã©ã€å¤šå°‘ã¯ã¿ã‚“ãªã«å…¬å¹³ã«å„ªã—ã„æ°—ãŒã™ã‚‹ã®ã§ã€ãƒ•ã‚¡ã‚¤ãƒ«ã‚µã‚¤ã‚ºã‚’ã‚±ãƒã‚‰ãšã«ã€ã™ã¹ã¦ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ¬ãƒ¼ã‚¹PNGã«ã—ã¦ã—ã¾ã†ã®ãŒè‰¯ã„æ°—ãŒã™ã‚‹ã€‚ãƒ‡ãƒ¡ãƒªãƒƒãƒˆã‚‚ç‰¹ã«çŸ¥ã‚‰ãªã„ã€‚ æ–°ãŸãªPNGãƒ•ã‚¡ã‚¤ãƒ«ãªã‚‰ã°æ›¸ãå‡ºã—æ™‚ã«ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ¬ãƒ¼ã‚¹PNGã«ã™ã‚Œã°è‰¯ã„ã‘ã©ã€æ—¢å˜ã®ã‚‚ã®ã‚’æ‰‹ä½œæ¥ã§ä¿®æ£ã—ã‚ˆã†ã¨ãªã‚‹ã¨é¢å€’ãã•ã„ã€‚optipngã«ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ¬ãƒ¼ã‚¹PNGã«å¤‰æ›ã™ã‚‹ã‚ªãƒ—ã‚·ãƒ§ãƒ³ãŒã‚ã‚‹ã®ã§ã€ãã‚Œã‚’ä½¿ã£ã¦å‡¦ç†ã™ã‚‹ã¨è‰¯ã„ã€‚ $ optipng -i 1 -strip all *.png ã¤ã„ã§ã«æ¶ˆã—å¿˜ã‚Œã¦ã„ã‚‹ã‹ã‚‚ã—ã‚Œãªã„ãƒ¡ã‚¿ãƒ‡ãƒ¼ã‚¿ã®å‰Šé™¤ã‚‚è¡Œã†ã¨ã€ãƒ•ã‚¡ã‚¤ãƒ«ã‚µã‚¤ã‚ºãŒç¯€ç´„ã§ãã¦å¹¸ã›ã€‚ãƒ¡ã‚¿ãƒ‡ãƒ¼ã‚¿ã®å‰Š
rikuo 2013/10/14
PNG

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php-ext-zopfliã§PNGç”»åƒã‚’å†åœ§ç¸® - pixiv engineering blog
MacBook Proã‚’è²·ã£ãŸã®ã¯ã„ã„ã‚‚ã®ã®ãã‚ãã‚Linuxã«æˆ»ã‚ŠãŸããªã£ã¦ããŸbokkoã§ã™ã€‚ ä»Šå›žã¯å…ˆæœˆæœ«ã«Googleã‹ã‚‰ç™ºè¡¨ãƒ»å…¬é–‹ã•ã‚ŒãŸã°ã‹ã‚Šã®zopfliã®ç´¹ä»‹ã¨ã€ ãã®PHPæ‹¡å¼µã§ã‚ã‚‹php-ext-zopfliã«PNGç”»åƒã‚’å†åœ§ç¸®ã™ã‚‹é–¢æ•°ã‚’è¿½åŠ ã—ãŸæ™‚ã®è©±ã‚’ã—ã¾ã™ã€‚ zopfli zopfliã¯zlibã¨æ¯”ã¹ã¦3ã€œ8%ã»ã©åœ§ç¸®çŽ‡ãŒé«˜ãã€ ãã‚Œã§ã„ã¦gzipã‚„zlibç‰ã§åºƒãä½¿ã‚ã‚Œã¦ã„ã‚‹deflateã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã¨äº’æ›æ€§ã®ã‚ã‚‹åœ§ç¸®ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã§ã™ã€‚Google Codeã§Cã«ã‚ˆã‚‹å®Ÿè£…ãŒå…¬é–‹ã•ã‚Œã¦ã„ã¾ã™ã€‚ ç¹°ã‚Šè¿”ã—ã«ãªã‚Šã¾ã™ãŒã€å˜ã«deflateã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã‚ˆã‚Šã‚‚åœ§ç¸®çŽ‡ãŒé«˜ã„ã ã‘ã§ãªãã€ deflateã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã¨äº’æ›æ€§ãŒã‚ã‚‹ã€ã¤ã¾ã‚Šzopfliã§åœ§ç¸®ã—ãŸã‚‚ã®ã¯å¾“æ¥ã®gzipã‚„zlibã§å±•é–‹ã§ãã‚‹ã¨ã„ã†ã®ãŒãƒŸã‚½ã§ã™ã€‚ zopfliã«ã‚ˆã‚‹PNGç”»åƒã®å†åœ§ç¸® PNGç”»åƒã¯ãƒ‡ãƒ¼ã‚¿éƒ¨åˆ†
rikuo 2013/03/25
PNG

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ãƒ•ã‚¡ã‚¤ãƒ«ã‚µã‚¤ã‚ºã‚’è€ƒæ…®ã—ãŸ Canvas ã®ä¿å˜ : document
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rikuo 2012/12/18
canvas

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rikuo 2012/12/16
PNG

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