{"id":11464,"date":"2026-01-10T14:55:25","date_gmt":"2026-01-10T06:55:25","guid":{"rendered":"https:\/\/blog.visual-paradigm.com\/vn\/what-is-a-png-file\/"},"modified":"2026-01-10T14:55:25","modified_gmt":"2026-01-10T06:55:25","slug":"what-is-a-png-file","status":"publish","type":"post","link":"https:\/\/blog.visual-paradigm.com\/vn\/what-is-a-png-file\/","title":{"rendered":"T\u1ec7p PNG l\u00e0 g\u00ec?"},"content":{"rendered":"<h1>T\u1ec7p PNG l\u00e0 g\u00ec?<\/h1>\n<p>PNG l\u00e0 m\u1ed9t lo\u1ea1i \u0111\u1ecbnh d\u1ea1ng t\u1ec7p r\u1ea5t ph\u1ed5 bi\u1ebfn \u0111\u1ec3 s\u1eed d\u1ee5ng ng\u00e0y nay. T\u00ean \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a PNG l\u00e0<a href=\"https:\/\/www.techtarget.com\/whatis\/definition\/PNG-Portable-Network-Graphics\">\u0110\u1ed3 h\u1ecda m\u1ea1ng di \u0111\u1ed9ng<\/a>, \u0111\u00e2y l\u00e0 m\u1ed9t \u0111\u1ecbnh d\u1ea1ng t\u1ec7p \u0111\u1ed3 h\u1ecda raster h\u1ed7 tr\u1ee3 n\u00e9n d\u1eef li\u1ec7u kh\u00f4ng m\u1ea5t m\u00e1t. PNG h\u1ed7 tr\u1ee3 h\u00ecnh \u1ea3nh m\u00e0u \u0111\u1ea7y \u0111\u1ee7 kh\u00f4ng d\u1ef1a tr\u00ean b\u1ea3ng m\u00e0u<a href=\"https:\/\/www.nixsensor.com\/blog\/what-is-rgb-color\/\" rel=\"noopener noreferrer\" target=\"_blank\">RGB<\/a>ho\u1eb7c h\u00ecnh \u1ea3nh RGBA, c\u0169ng nh\u01b0 h\u00ecnh \u1ea3nh d\u1ef1a tr\u00ean b\u1ea3ng m\u00e0u (b\u1ea3ng m\u00e0u v\u1edbi m\u00e0u RGB 24-bit ho\u1eb7c RGBA 32-bit), k\u00eanh alpha c\u00f3 ho\u1eb7c kh\u00f4ng c\u00f3 trong su\u1ed1t, v\u00e0 h\u00ecnh \u1ea3nh x\u00e1m. C\u00e1c kh\u00f4ng gian m\u00e0u kh\u00f4ng ph\u1ea3i RGB nh\u01b0<a href=\"https:\/\/www.printingcenterusa.com\/blog\/what-is-cmyk-and-why-is-it-used-for-printing\/\" rel=\"noopener noreferrer\" target=\"_blank\">CMYK<\/a>kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 v\u00ec nh\u00f3m l\u00e0m vi\u1ec7c PNG \u0111\u00e3 t\u1ea1o \u0111\u1ecbnh d\u1ea1ng n\u00e0y cho vi\u1ec7c truy\u1ec1n h\u00ecnh \u1ea3nh tr\u00ean Internet thay v\u00ec cho \u0111\u1ed3 h\u1ecda in \u1ea5n ch\u1ea5t l\u01b0\u1ee3ng cao.<\/p>\n<p><img alt=\"\" class=\"alignnone wp-image-10771 size-full\" decoding=\"async\" height=\"421\" loading=\"lazy\" sizes=\"auto, (max-width: 582px) 100vw, 582px\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-02-1.png\" srcset=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-02-1.png 582w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-02-1-300x217.png 300w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-02-1-150x109.png 150w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-02-1-400x289.png 400w\" width=\"582\"\/><\/p>\n<h1>\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a \u0111\u1ecbnh d\u1ea1ng PNG<\/h1>\n<h3><strong><span class=\"mw-headline\" id=\"Transparency_of_image\">T\u00ednh trong su\u1ed1t c\u1ee7a h\u00ecnh \u1ea3nh<\/span><\/strong><\/h3>\n<ul>\n<li>B\u1ea1n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng x\u00e1c \u0111\u1ecbnh n\u1ec1n trong su\u1ed1t cho \u0111\u1ecbnh d\u1ea1ng PNG. PNG cung c\u1ea5p nhi\u1ec1u l\u1ef1a ch\u1ecdn v\u1ec1 t\u00ednh trong su\u1ed1t. C\u00e1c gi\u00e1 tr\u1ecb pixel ri\u00eang l\u1ebb cho h\u00ecnh \u1ea3nh m\u00e0u th\u1eadt v\u00e0 h\u00ecnh \u1ea3nh x\u00e1m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t th\u00e0nh trong su\u1ed1t, ho\u1eb7c c\u00f3 th\u1ec3 th\u00eam k\u00eanh alpha (cho ph\u00e9p b\u1ea5t k\u1ef3 ph\u1ea7n tr\u0103m \u0111\u1ed9 trong su\u1ed1t n\u00e0o). Gi\u00e1 tr\u1ecb alpha c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o m\u1ee5c b\u1ea3ng m\u00e0u cho c\u00e1c h\u00ecnh \u1ea3nh \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o b\u1ea3ng m\u00e0u.<\/li>\n<\/ul>\n<h3><strong><span class=\"mw-headline\" id=\"Animation\">Ho\u1ea1t h\u00ecnh<\/span><\/strong><\/h3>\n<ul>\n<li>Ho\u1ea1t h\u00ecnh kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 ngay l\u1eadp t\u1ee9c b\u1edfi PNG.<a href=\"https:\/\/en.wikipedia.org\/wiki\/Multiple-image_Network_Graphics#:~:text=Multiple%2Dimage%20Network%20Graphics%20(MNG,free%20software%20reference%20implementations%20available.\" rel=\"noopener noreferrer\" target=\"_blank\"> MNG<\/a>\u0111\u01b0\u1ee3c t\u1ea1o b\u1edfi c\u00e1c th\u00e0nh vi\u00ean nh\u00f3m PNG v\u00e0 l\u00e0 m\u1ed9t m\u1edf r\u1ed9ng c\u1ee7a PNG. MNG c\u00f3 c\u1ea5u tr\u00fac c\u01a1 b\u1ea3n t\u01b0\u01a1ng t\u1ef1 PNG v\u00e0 s\u1eed d\u1ee5ng nhi\u1ec1u th\u00e0nh ph\u1ea7n x\u00e2y d\u1ef1ng gi\u1ed1ng nhau, nh\u01b0ng n\u00f3 ph\u1ee9c t\u1ea1p h\u01a1n nhi\u1ec1u v\u00e0 c\u00f3 k\u00fd hi\u1ec7u t\u1ec7p ri\u00eang, khi\u1ebfn n\u00f3 kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi b\u1ed9 gi\u1ea3i m\u00e3 PNG \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi ph\u1ea7n l\u1edbn tr\u00ecnh duy\u1ec7t tr\u1ef1c tuy\u1ebfn ho\u1eb7c \u1ee9ng d\u1ee5ng.<\/li>\n<\/ul>\n<h3><strong><span class=\"mw-headline\" id=\"Pixel_format\">\u0110\u1ecbnh d\u1ea1ng pixel<\/span><\/strong><\/h3>\n<ul>\n<li>C\u00e1c s\u1ed1 t\u1ea1o n\u00ean c\u00e1c pixel trong h\u00ecnh \u1ea3nh PNG c\u00f3 th\u1ec3 l\u00e0 ch\u1ec9 m\u1ee5c v\u00e0o d\u1eef li\u1ec7u m\u1eabu trong b\u1ea3ng m\u00e0u ho\u1eb7c ch\u00ednh d\u1eef li\u1ec7u m\u1eabu. Kh\u1ed1i PLTE ch\u1ee9a m\u1ed9t b\u1ea3ng ri\u00eang bi\u1ec7t g\u1ecdi l\u00e0 b\u1ea3ng m\u00e0u. D\u1eef li\u1ec7u m\u1eabu c\u1ee7a m\u1ed9t pixel duy nh\u1ea5t bao g\u1ed3m c\u00e1c b\u1ed9 g\u1ed3m t\u1eeb m\u1ed9t \u0111\u1ebfn b\u1ed1n s\u1ed1. M\u1ed7i s\u1ed1 nguy\u00ean trong h\u00ecnh \u1ea3nh \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a b\u1eb1ng c\u00f9ng m\u1ed9t c\u1ea5u tr\u00fac, b\u1ea5t k\u1ec3 d\u1eef li\u1ec7u pixel bi\u1ec3u di\u1ec5n ch\u1ec9 m\u1ee5c b\u1ea3ng m\u00e0u hay gi\u00e1 tr\u1ecb m\u1eabu c\u1ee5 th\u1ec3.<\/li>\n<\/ul>\n<h1><span class=\"mw-headline\" id=\"Advantages\">\u01afu \u0111i\u1ec3m<\/span>c\u1ee7a PNG<\/h1>\n<h3><strong>Hi\u1ec7u qu\u1ea3<\/strong><\/h3>\n<ul>\n<li>V\u1ec1 m\u1eb7t hi\u1ec7u qu\u1ea3, PNG hi\u1ec7u qu\u1ea3 trong vi\u1ec7c gi\u1ea3i m\u00e3 v\u00e0 hi\u1ec3n th\u1ecb cho b\u1ea5t k\u1ef3 h\u00ecnh \u1ea3nh hi\u1ec3n th\u1ecb d\u1ea7n n\u00e0o, n\u00e9n v\u00e0 l\u1ecdc<\/li>\n<\/ul>\n<h3><strong>T\u00ednh linh ho\u1ea1t<\/strong><\/h3>\n<ul>\n<li>V\u1ec1 m\u1eb7t t\u00ednh linh ho\u1ea1t, c\u00e1c b\u1ed5 sung t\u01b0\u01a1ng lai v\u00e0 c\u00e1c m\u1edf r\u1ed9ng ri\u00eang t\u01b0 \u0111\u01b0\u1ee3c ph\u00e9p th\u1ef1c hi\u1ec7n m\u00e0 kh\u00f4ng c\u1ea7n thay \u0111\u1ed5i c\u00e2u tr\u01b0\u1edbc \u0111\u00f3.<\/li>\n<\/ul>\n<h3><strong>T\u00ednh \u0111\u1ea7y \u0111\u1ee7<\/strong><\/h3>\n<ul>\n<li>N\u00f3 c\u00f3 th\u1ec3 bi\u1ec3u di\u1ec5n h\u00ecnh \u1ea3nh m\u00e0u th\u1eadt, m\u00e0u ch\u1ec9 m\u1ee5c v\u00e0 h\u00ecnh \u1ea3nh x\u00e1m.<\/li>\n<\/ul>\n<h3><strong>N\u00e9n<\/strong><\/h3>\n<ul>\n<li>B\u1ea1n c\u00f3 th\u1ec3 n\u00e9n PNG m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 v\u00e0 nh\u1ea5t qu\u00e1n.<\/li>\n<\/ul>\n<h3><strong>S\u1ef1 t\u1ef1 do v\u1ec1 c\u00e1c h\u1ea1n ch\u1ebf ph\u00e1p l\u00fd<\/strong><\/h3>\n<ul>\n<li>C\u00e1c thu\u1eadt to\u00e1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 mi\u1ec5n ph\u00ed v\u00e0 d\u1ec5 ti\u1ebfp c\u1eadn cho m\u1ecdi ng\u01b0\u1eddi.<\/li>\n<\/ul>\n<p><img alt=\"\" class=\"alignnone wp-image-10773 size-full\" decoding=\"async\" height=\"421\" loading=\"lazy\" sizes=\"auto, (max-width: 581px) 100vw, 581px\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-01.png\" srcset=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-01.png 581w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-01-300x217.png 300w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-01-150x109.png 150w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-01-400x290.png 400w\" width=\"581\"\/><\/p>\n<h1><span class=\"mw-headline\" id=\"Comparison_with_other_file_formats\">So s\u00e1nh v\u1edbi c\u00e1c \u0111\u1ecbnh d\u1ea1ng t\u1ec7p kh\u00e1c<\/span><\/h1>\n<h3><strong><span class=\"mw-headline\" id=\"Graphics_Interchange_Format_(GIF)\">\u0110\u1ecbnh d\u1ea1ng trao \u0111\u1ed5i \u0111\u1ed3 h\u1ecda (GIF)<\/span><\/strong><\/h3>\n<ul>\n<li>\u0110\u1ed1i v\u1edbi ph\u1ea7n l\u1edbn h\u00ecnh \u1ea3nh, m\u1ed9t <a href=\"https:\/\/www.howtogeek.com\/441185\/what-is-a-gif-and-how-do-you-use-them\/\" rel=\"noopener noreferrer\" target=\"_blank\">GIF<\/a>t\u1ec7p c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n h\u00ecnh \u1ea3nh PNG \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh.<\/li>\n<li>PNG cung c\u1ea5p ph\u1ea1m vi l\u1ef1a ch\u1ecdn trong su\u1ed1t r\u1ed9ng h\u01a1n nhi\u1ec1u so v\u1edbi GIF<\/li>\n<li>Khi chuy\u1ec3n \u0111\u1ed5i h\u00ecnh \u1ea3nh t\u1eeb \u0111\u1ecbnh d\u1ea1ng PNG sang GIF, ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng<\/li>\n<\/ul>\n<h3><strong><span class=\"mw-headline\" id=\"JPEG\">JPEG<\/span><\/strong><\/h3>\n<ul>\n<li>\u0110\u1ecbnh d\u1ea1ng PNG c\u00f3 th\u1ec3 n\u00e9n d\u1eef li\u1ec7u h\u00ecnh \u1ea3nh t\u1ed1t h\u01a1n JPEG<\/li>\n<li>JPEG kh\u00f4ng h\u1ed7 tr\u1ee3 trong su\u1ed1t<\/li>\n<\/ul>\n<h3><strong><span class=\"mw-headline\" id=\"TIFF\">TIFF<\/span><\/strong><\/h3>\n<ul>\n<li>PNG ch\u1ec9 h\u1ed7 tr\u1ee3 alpha kh\u00f4ng nh\u00e2n tr\u01b0\u1edbc trong khi <a href=\"https:\/\/www.widen.com\/blog\/whats-the-difference-between-png-jpeg-gif-and-tiff\" rel=\"noopener noreferrer\" target=\"_blank\">TIFF<\/a>c\u0169ng h\u1ed7 tr\u1ee3 alpha nh\u00e2n tr\u01b0\u1edbc.<\/li>\n<\/ul>\n<h3><strong><span class=\"mw-headline\" id=\"JPEG-LS\">JPEG-LS<\/span><\/strong><\/h3>\n<ul>\n<li>JPEG-LS th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng t\u1ed1t h\u01a1n PNG<\/li>\n<li>C\u1ea3 \u0111\u1ecbnh d\u1ea1ng PNG v\u00e0 JPEG-LS \u0111\u1ec1u l\u00e0 l\u1ef1a ch\u1ecdn v\u00e0 k\u00edch th\u01b0\u1edbc t\u1ec7p l\u00e0 m\u1ed9t ti\u00eau ch\u00ed quan tr\u1ecdng<\/li>\n<\/ul>\n<p><img alt=\"\" class=\"alignnone wp-image-10774 size-full\" decoding=\"async\" height=\"421\" loading=\"lazy\" sizes=\"auto, (max-width: 581px) 100vw, 581px\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-03.png\" srcset=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-03.png 581w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-03-300x217.png 300w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-03-150x109.png 150w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-03-400x290.png 400w\" width=\"581\"\/><\/p>\n<h1>Chuy\u1ec3n \u0111\u1ed5i PNG th\u00e0nh PDF<\/h1>\n<p>V\u1ec1 c\u00e1ch chuy\u1ec3n \u0111\u1ed5i PNG th\u00e0nh PDF. R\u1ea5t \u0111\u01a1n gi\u1ea3n. B\u1ea1n ch\u1ec9 c\u1ea7n truy c\u1eadp d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn c\u1ee7a Adobe Acrobat b\u1eb1ng b\u1ea5t k\u1ef3 tr\u00ecnh duy\u1ec7t web n\u00e0o, sau \u0111\u00f3 t\u00ecm trang chuy\u1ec3n \u0111\u1ed5i JPG th\u00e0nh PDF. \u0110\u1ec3 t\u1ea3i l\u00ean t\u1ec7p h\u00ecnh \u1ea3nh, h\u00e3y k\u00e9o t\u1ec7p v\u00e0o khu v\u1ef1c th\u1ea3 ho\u1eb7c ch\u1ecdn n\u00fat &#8220;Ch\u1ecdn m\u1ed9t t\u1ec7p&#8221;.<\/p>\n<h1>Ch\u1ec9nh s\u1eeda t\u00e0i li\u1ec7u PDF b\u1eb1ng Tr\u00ecnh ch\u1ec9nh s\u1eeda PDF mi\u1ec5n ph\u00ed tr\u1ef1c tuy\u1ebfn Visual Paradigm<\/h1>\n<p>Visual Paradigm hi\u1ec7n nay cung c\u1ea5p t\u00ednh n\u0103ng m\u1edbi \u0111\u1ec3 ch\u1ec9nh s\u1eeda PDF. B\u1ea1n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng t\u1ea3i l\u00ean b\u1ea5t k\u1ef3 t\u1ec7p PDF n\u00e0o v\u00e0 ch\u1ec9nh s\u1eeda PDF. D\u1ec5 s\u1eed d\u1ee5ng cho m\u1ecdi ng\u01b0\u1eddi \u0111\u1ec3 t\u00f9y ch\u1ec9nh PDF g\u1ed1c c\u1ee7a b\u1ea1n nh\u01b0 ch\u1ec9nh s\u1eeda n\u1ed9i dung, th\u00eam h\u00ecnh \u1ea3nh, b\u1ea3ng\/bi\u1ec3u \u0111\u1ed3 ho\u1eb7c c\u00e1c t\u00ednh n\u0103ng thi\u1ebft k\u1ebf kh\u00e1c. B\u1ea1n c\u00f3 th\u1ec3 nh\u1ea5p v\u00e0o <a href=\"https:\/\/online.visual-paradigm.com\/online-pdf-editor\/\" rel=\"noopener noreferrer\" target=\"_blank\">\u1edf \u0111\u00e2y<\/a>\u0111\u1ec3 xem tr\u00ecnh ch\u1ec9nh s\u1eeda PDF mi\u1ec5n ph\u00ed VP Online.<\/p>\n<p>Trong VP Online, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng tab t\u1ea3i l\u00ean PDF ph\u00eda tr\u00ean \u0111\u1ec3 g\u1eedi t\u1ec7p PDF c\u1ee7a b\u1ea1n. B\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn m\u1ed9t t\u1ec7p t\u1eeb c\u00e1c d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef tr\u1ef1c tuy\u1ebfn c\u1ee7a m\u00ecnh, bao g\u1ed3m Google Drive, Dropbox, ho\u1eb7c k\u00e9o v\u00e0 th\u1ea3 m\u1ed9t t\u1ec7p.<\/p>\n<p><img alt=\"\" class=\"alignnone wp-image-10776 size-full\" decoding=\"async\" height=\"375\" loading=\"lazy\" sizes=\"auto, (max-width: 792px) 100vw, 792px\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/Screenshot-5337-4.png\" srcset=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/Screenshot-5337-4.png 792w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/Screenshot-5337-4-300x142.png 300w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/Screenshot-5337-4-768x364.png 768w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/Screenshot-5337-4-150x71.png 150w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/Screenshot-5337-4-400x189.png 400w\" width=\"792\"\/><\/p>\n<p>V\u0103n b\u1ea3n v\u00e0 h\u00ecnh \u1ea3nh trong t\u00e0i li\u1ec7u \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thay \u0111\u1ed5i. Nh\u1ea5p \u0111\u00fap v\u00e0o h\u00ecnh d\u1ea1ng v\u0103n b\u1ea3n \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh c\u00e0i \u0111\u1eb7t n\u1ed9i dung v\u00e0 ph\u00f4ng ch\u1eef. Ch\u1ecdn m\u1ed9t h\u00ecnh d\u1ea1ng ho\u1eb7c h\u00ecnh \u1ea3nh \u0111\u1ec3 ch\u1ec9nh s\u1eeda, sau \u0111\u00f3 th\u1ef1c hi\u1ec7n c\u00e1c \u0111i\u1ec1u ch\u1ec9nh nh\u01b0 thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc, th\u00eam hi\u1ec7u \u1ee9ng v\u00e0 nhi\u1ec1u h\u01a1n n\u1eefa.<\/p>\n<p><img alt=\"\" class=\"alignnone wp-image-9592 size-full\" decoding=\"async\" height=\"226\" loading=\"lazy\" sizes=\"auto, (max-width: 816px) 100vw, 816px\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/Screenshot-5335-1.png\" srcset=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/Screenshot-5335-1.png 816w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/Screenshot-5335-1-300x83.png 300w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/Screenshot-5335-1-768x213.png 768w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/Screenshot-5335-1-150x42.png 150w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/Screenshot-5335-1-400x111.png 400w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/Screenshot-5335-1-705x195.png 705w\" width=\"816\"\/><\/p>\n<p>Sau khi ho\u00e0n th\u00e0nh vi\u1ec7c ch\u1ec9nh s\u1eeda, b\u1ea1n c\u00f3 th\u1ec3 chia s\u1ebb PDF \u0111\u00e3 ch\u1ec9nh s\u1eeda tr\u1ef1c tuy\u1ebfn ho\u1eb7c t\u1ea3i xu\u1ed1ng. D\u1ec5 d\u00e0ng cho m\u1ecdi ng\u01b0\u1eddi ch\u1ec9nh s\u1eeda PDF v\u1edbi <a href=\"https:\/\/online.visual-paradigm.com\/online-pdf-editor\/\">Tr\u00ecnh ch\u1ec9nh s\u1eeda PDF tr\u1ef1c tuy\u1ebfn Visual Paradigm<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u1ec7p PNG l\u00e0 g\u00ec? PNG l\u00e0 m\u1ed9t lo\u1ea1i \u0111\u1ecbnh d\u1ea1ng t\u1ec7p r\u1ea5t ph\u1ed5 bi\u1ebfn \u0111\u1ec3 s\u1eed d\u1ee5ng ng\u00e0y nay. T\u00ean \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a PNG l\u00e0\u0110\u1ed3 h\u1ecda m\u1ea1ng di \u0111\u1ed9ng, \u0111\u00e2y l\u00e0 m\u1ed9t \u0111\u1ecbnh d\u1ea1ng t\u1ec7p \u0111\u1ed3 h\u1ecda raster h\u1ed7 tr\u1ee3 n\u00e9n d\u1eef li\u1ec7u kh\u00f4ng m\u1ea5t m\u00e1t. PNG h\u1ed7 tr\u1ee3 h\u00ecnh \u1ea3nh m\u00e0u \u0111\u1ea7y \u0111\u1ee7 kh\u00f4ng [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":11465,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"no","_lmt_disable":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-11464","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","loop-entry","clr"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>T\u1ec7p PNG l\u00e0 g\u00ec? - Visual Paradigm Blog<\/title>\n<meta name=\"description\" content=\"PNG is a type of file format that is very popular to use today. The full name of PNG is Portable Network Graphics, it is is a raster-graphics file format that supports lossless data compression.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.visual-paradigm.com\/vn\/what-is-a-png-file\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"T\u1ec7p PNG l\u00e0 g\u00ec? - Visual Paradigm Blog\" \/>\n<meta property=\"og:description\" content=\"PNG is a type of file format that is very popular to use today. The full name of PNG is Portable Network Graphics, it is is a raster-graphics file format that supports lossless data compression.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blog.visual-paradigm.com\/vn\/what-is-a-png-file\/\" \/>\n<meta property=\"og:site_name\" content=\"Visual Paradigm Blog\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-10T06:55:25+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-02-1.png\" \/><meta property=\"og:image\" content=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-02-1.png\" \/>\n\t<meta property=\"og:image:width\" content=\"582\" \/>\n\t<meta property=\"og:image:height\" content=\"421\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"vpleanda\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/08\/12-02-1.png\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"vpleanda\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blog.visual-paradigm.com\/vn\/what-is-a-png-file\/\",\"url\":\"https:\/\/blog.visual-paradigm.com\/vn\/what-is-a-png-file\/\",\"name\":\"T\u1ec7p PNG l\u00e0 g\u00ec? - Visual Paradigm Blog\",\"isPartOf\":{\"@id\":\"https:\/\/blog.visual-paradigm.com\/vn\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blog.visual-paradigm.com\/vn\/what-is-a-png-file\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blog.visual-paradigm.com\/vn\/what-is-a-png-file\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blog.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/13\/2026\/01\/12-02-1.png\",\"datePublished\":\"2026-01-10T06:55:25+00:00\",\"dateModified\":\"2026-01-10T06:55:25+00:00\",\"author\":{\"@id\":\"https:\/\/blog.visual-paradigm.com\/vn\/#\/schema\/person\/6acd2305b60fa353e87c4c7d9eba4039\"},\"description\":\"PNG is a type of file format that is very popular to use today. 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