{"id":46372,"date":"2025-09-13T00:57:23","date_gmt":"2025-09-13T00:57:23","guid":{"rendered":"https:\/\/staging.pageloot.com\/uncategorized\/how-printing-techniques-impact-qr-code-scannability\/"},"modified":"2026-04-22T13:14:08","modified_gmt":"2026-04-22T13:14:08","slug":"how-printing-techniques-impact-qr-code-scannability","status":"publish","type":"post","link":"https:\/\/pageloot.com\/vi\/blog\/how-printing-techniques-impact-qr-code-scannability\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn in M\u00e3 QR \u0111\u00e1ng tin c\u1eady v\u00e0 c\u00f3 th\u1ec3 qu\u00e9t \u0111\u01b0\u1ee3c"},"content":{"rendered":"<p class=\"wp-block-paragraph\">M\u00e3 QR in c\u1ee7a b\u1ea1n c\u00f3 b\u1ecb l\u1ed7i khi qu\u00e9t khi \u0111\u1ebfn tay kh\u00e1ch h\u00e0ng kh\u00f4ng? M\u1ed9t m\u00e3 kh\u00f4ng th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c s\u1ebd d\u1eabn \u0111\u1ebfn m\u1ea5t kh\u00e1ch h\u00e0ng ti\u1ec1m n\u0103ng, ng\u01b0\u1eddi d\u00f9ng th\u1ea5t v\u1ecdng v\u00e0 l\u00e3ng ph\u00ed ng\u00e2n s\u00e1ch in \u1ea5n. H\u01b0\u1edbng d\u1eabn n\u00e0y gi\u1ea3i th\u00edch c\u00e1ch n\u1eafm v\u1eefng c\u00e1c bi\u1ebfn k\u1ef9 thu\u1eadt nh\u01b0 k\u00edch th\u01b0\u1edbc, \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n v\u00e0 v\u1eadt li\u1ec7u \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u00e3 c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady m\u1ecdi l\u00fac.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao K\u00edch th\u01b0\u1edbc v\u00e0 Kho\u1ea3ng c\u00e1ch quy\u1ebft \u0111\u1ecbnh th\u00e0nh c\u00f4ng khi qu\u00e9t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y h\u00ecnh dung m\u00e1y qu\u00e9t \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh nh\u01b0 m\u1ed9t thi\u1ebft b\u1ecb \u0111\u1ecdc t\u1ed1c \u0111\u1ed9 cao c\u1ea7n ph\u00e2n gi\u1ea3i t\u1eebng \u00f4 vu\u00f4ng nh\u1ecf, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u00f4-\u0111un, \u0111\u1ec3 hi\u1ec3u th\u00f4ng \u0111i\u1ec7p. N\u1ebfu m\u00e3 QR qu\u00e1 nh\u1ecf, c\u1ea3m bi\u1ebfn m\u00e1y \u1ea3nh kh\u00f4ng th\u1ec3 ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c m\u00f4-\u0111un n\u00e0y. Ti\u00eau chu\u1ea9n ng\u00e0nh tu\u00e2n theo t\u1ef7 l\u1ec7 10:1, ngh\u0129a l\u00e0 m\u00e3 ph\u1ea3i r\u1ed9ng m\u1ed9t inch cho m\u1ed7i m\u01b0\u1eddi inch kho\u1ea3ng c\u00e1ch qu\u00e9t. V\u00ed d\u1ee5, m\u1ed9t m\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 qu\u00e9t t\u1eeb kho\u1ea3ng c\u00e1ch 20 inch ph\u1ea3i r\u1ed9ng \u00edt nh\u1ea5t 2 inch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c t\u00e0i li\u1ec7u ti\u1ebfp th\u1ecb ti\u00eau chu\u1ea9n nh\u01b0 t\u1edd r\u01a1i ho\u1eb7c nh\u00e3n s\u1ea3n ph\u1ea9m, b\u1ea1n kh\u00f4ng bao gi\u1edd n\u00ean in nh\u1ecf h\u01a1n 0,8 x 0,8 inch (2 x 2 cm). N\u1ebfu m\u00e3 c\u1ee7a b\u1ea1n ch\u1ee9a l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn, c\u00e1c m\u00f4-\u0111un s\u1ebd tr\u1edf n\u00ean d\u00e0y \u0111\u1eb7c v\u00e0 nh\u1ecf h\u01a1n, y\u00eau c\u1ea7u b\u1ea1n ph\u1ea3i t\u0103ng k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd c\u1ee7a b\u1ea3n in \u0111\u1ec3 duy tr\u00ec kh\u1ea3 n\u0103ng \u0111\u1ecdc. B\u1ea1n c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y c\u00e1c k\u00edch th\u01b0\u1edbc c\u1ee5 th\u1ec3 h\u01a1n cho c\u00e1c d\u1ef1 \u00e1n kh\u00e1c nhau trong c\u00e1c h\u01b0\u1edbng d\u1eabn c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/pageloot.com\/vi\/blog\/qr-code-sizing-for-different-print-materials\/\">k\u00edch th\u01b0\u1edbc m\u00e3 QR cho c\u00e1c v\u1eadt li\u1ec7u in kh\u00e1c nhau<\/a> v\u00e0 <a href=\"https:\/\/pageloot.com\/vi\/blog\/best-qr-code-sizes-for-business-cards\/\">k\u00edch th\u01b0\u1edbc m\u00e3 QR t\u1ed1t nh\u1ea5t cho danh thi\u1ebfp<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Vai tr\u00f2 c\u1ee7a \u0110\u1ed9 t\u01b0\u01a1ng ph\u1ea3n v\u00e0 M\u00e0u s\u1eafc trong kh\u1ea3 n\u0103ng \u0111\u1ecdc<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00e1y qu\u00e9t \u0111\u1ecdc m\u00e3 QR b\u1eb1ng c\u00e1ch \u0111o s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u0111\u1ed9 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng gi\u1eefa c\u00e1c m\u00f4-\u0111un t\u1ed1i v\u00e0 n\u1ec1n s\u00e1ng. M\u00e0u t\u1ed1i h\u01a1n h\u1ea5p th\u1ee5 \u00e1nh s\u00e1ng, trong khi m\u00e0u s\u00e1ng h\u01a1n ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng. N\u1ebfu \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n qu\u00e1 th\u1ea5p, c\u1ea3m bi\u1ebfn kh\u00f4ng th\u1ec3 ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u k\u1ebft th\u00fac \u1edf \u0111\u00e2u v\u00e0 n\u1ec1n b\u1eaft \u0111\u1ea7u \u1edf \u0111\u00e2u. M\u1eb7c d\u00f9 m\u00e0u \u0111en tr\u00ean n\u1ec1n tr\u1eafng cung c\u1ea5p t\u1ef7 l\u1ec7 t\u01b0\u01a1ng ph\u1ea3n 21:1 \u0111\u00e1ng tin c\u1eady nh\u1ea5t, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u00e0u s\u1eafc th\u01b0\u01a1ng hi\u1ec7u mi\u1ec5n l\u00e0 b\u1ea1n duy tr\u00ec t\u1ef7 l\u1ec7 t\u1ed1i thi\u1ec3u 3:1 \u0111\u1ec3 c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ecdc c\u01a1 b\u1ea3n.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>  Lu\u00f4n gi\u1eef c\u00e1c m\u00f4-\u0111un ti\u1ec1n c\u1ea3nh t\u1ed1i h\u01a1n n\u1ec1n.<\/li>\n<li>  Tr\u00e1nh c\u00e1c m\u00e0u \u0111\u1ea3o ng\u01b0\u1ee3c (m\u00f4-\u0111un tr\u1eafng tr\u00ean n\u1ec1n t\u1ed1i) v\u00ec m\u1ed9t s\u1ed1 m\u00e1y qu\u00e9t c\u0169 kh\u00f4ng nh\u1eadn ra ch\u00fang.<\/li>\n<li>  Tr\u00e1nh xa c\u00e1c d\u1ea3i m\u00e0u chuy\u1ec3n s\u1eafc v\u00e0 b\u00f3ng \u0111\u1ed5, v\u00ec ch\u00fang t\u1ea1o ra c\u00e1c t\u00f4ng m\u00e0u trung gian g\u00e2y nh\u1ea7m l\u1eabn cho c\u1ea3m bi\u1ebfn m\u00e1y \u1ea3nh.<\/li>\n<li>  \u0110\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea3ng m\u00e0u th\u01b0\u01a1ng hi\u1ec7u \u0111\u00e1p \u1ee9ng t\u1ef7 l\u1ec7 4,5:1 \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 bi\u1ebft chi ti\u1ebft v\u1ec1 c\u00e1c c\u1eb7p m\u00e0u v\u00e0 m\u1eb9o tu\u00e2n th\u1ee7, h\u00e3y tham kh\u1ea3o <a href=\"https:\/\/pageloot.com\/vi\/blog\/qr-code-color-contrast-best-practices\/\">c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hay nh\u1ea5t v\u1ec1 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n m\u00e0u c\u1ee7a m\u00e3 QR<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/03\/simple-clean-infographic-aspect-ratio-1-1-white-background-black-text-with-bl-2609-a9fb67b6bb90.webp\" alt=\"Quy t\u1eafc in QR\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">V\u1eadt li\u1ec7u v\u00e0 L\u1edbp ho\u00e0n thi\u1ec7n \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c qu\u00e9t nh\u01b0 th\u1ebf n\u00e0o<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1eadt li\u1ec7u n\u1ec1n b\u1ea1n ch\u1ecdn \u0111\u00f3ng vai tr\u00f2 l\u00e0 \"canvas\" cho d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n, v\u00e0 k\u1ebft c\u1ea5u c\u1ee7a n\u00f3 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn c\u00e1ch \u00e1nh s\u00e1ng t\u01b0\u01a1ng t\u00e1c v\u1edbi \u1ed1ng k\u00ednh m\u00e1y \u1ea3nh. Gi\u1ea5y m\u1edd l\u00e0 ti\u00eau chu\u1ea9n v\u00e0ng \u0111\u1ec3 in v\u00ec n\u00f3 cung c\u1ea5p b\u1ec1 m\u1eb7t ph\u1eb3ng, kh\u00f4ng ph\u1ea3n chi\u1ebfu. Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c l\u1edbp ho\u00e0n thi\u1ec7n b\u00f3ng v\u00e0 c\u00e1n m\u00e0ng d\u00e0y t\u1ea1o ra \u0111\u1ed9 ch\u00f3i c\u00f3 th\u1ec3 l\u00e0m \"m\u00f9\" m\u00e1y qu\u00e9t.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>  Gi\u1ea5y m\u1edd: Cung c\u1ea5p \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n cao v\u00e0 kh\u00f4ng ch\u00f3i, l\u00fd t\u01b0\u1edfng cho h\u1ea7u h\u1ebft c\u00e1c m\u1ee5c \u0111\u00edch ti\u1ebfp th\u1ecb.<\/li>\n<li>  B\u00eca c\u1ee9ng v\u00e0 B\u1ec1 m\u1eb7t l\u01b0\u1ee3n s\u00f3ng: Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y th\u01b0\u1eddng c\u00f3 c\u00e1c r\u00e3nh ho\u1eb7c \u0111\u1ed9 h\u00fat m\u1ef1c cao c\u00f3 th\u1ec3 l\u00e0m m\u1ef1c b\u1ecb lem v\u00e0 l\u00e0m m\u1edd c\u00e1c m\u00f4-\u0111un. T\u1ed1t nh\u1ea5t n\u00ean in m\u00e3 l\u1edbn h\u01a1n 20% \u0111\u1ec3 b\u00f9 \u0111\u1eafp.<\/li>\n<li>  V\u1ea3i v\u00e0 D\u1ec7t may: V\u00ec v\u1ea3i co gi\u00e3n v\u00e0 c\u00f3 k\u1ebft c\u1ea5u d\u1ec7t r\u00f5 r\u00e0ng, c\u00e1c m\u00f4-\u0111un c\u00f3 th\u1ec3 b\u1ecb bi\u1ebfn d\u1ea1ng. S\u1eed d\u1ee5ng t\u00ednh n\u0103ng s\u1eeda l\u1ed7i cao v\u00e0 ph\u00f3ng to m\u00e3 l\u00ean 25\u201350%.<\/li>\n<li>  K\u00ednh v\u00e0 Kim lo\u1ea1i: \u0110\u00e2y l\u00e0 nh\u1eefng v\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 ph\u1ea3n chi\u1ebfu cao v\u00e0 th\u01b0\u1eddng cong. Lu\u00f4n \u00e1p d\u1ee5ng m\u1ed9t l\u1edbp n\u1ec1n m\u1edd m\u00e0u tr\u1eafng b\u00ean d\u01b0\u1edbi m\u00e3 \u0111\u1ec3 cung c\u1ea5p m\u1ed9t n\u1ec1n \u1ed5n \u0111\u1ecbnh, kh\u00f4ng ph\u1ea3n chi\u1ebfu.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt v\u1ec1 \u0111\u1ed9 ph\u00e2n gi\u1ea3i v\u00e0 \u0111\u1ecbnh d\u1ea1ng t\u1ec7p<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00e3 QR tr\u00f4ng s\u1eafc n\u00e9t tr\u00ean m\u00e0n h\u00ecnh k\u1ef9 thu\u1eadt s\u1ed1 c\u00f3 th\u1ec3 b\u1ecb m\u1edd khi in n\u1ebfu \u0111\u1ed9 ph\u00e2n gi\u1ea3i kh\u00f4ng \u0111\u1ee7. H\u00ecnh \u1ea3nh \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u1ea5p d\u1eabn \u0111\u1ebfn c\u00e1c c\u1ea1nh m\u1edd, ng\u0103n m\u00e1y qu\u00e9t nh\u1eadn di\u1ec7n c\u00e1c m\u00f4-\u0111un ri\u00eang l\u1ebb. \u0110\u1ec3 ng\u0103n ch\u1eb7n \u0111i\u1ec1u n\u00e0y, lu\u00f4n s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ecbnh d\u1ea1ng vector nh\u01b0 SVG, EPS ho\u1eb7c PDF cho c\u00e1c t\u1ec7p in cu\u1ed1i c\u00f9ng c\u1ee7a b\u1ea1n. C\u00e1c \u0111\u1ecbnh d\u1ea1ng n\u00e0y \u0111\u1ed9c l\u1eadp v\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i, ngh\u0129a l\u00e0 ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc \u0111\u1ebfn b\u1ea5t k\u1ef3 k\u00edch th\u01b0\u1edbc n\u00e0o m\u00e0 kh\u00f4ng l\u00e0m m\u1ea5t \u0111i \u0111\u1ed9 r\u00f5 n\u00e9t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n ph\u1ea3i s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ecbnh d\u1ea1ng raster nh\u01b0 PNG, h\u00e3y \u0111\u1ea3m b\u1ea3o t\u1ec7p c\u00f3 \u00edt nh\u1ea5t 300 DPI \u1edf k\u00edch th\u01b0\u1edbc in cu\u1ed1i c\u00f9ng. C\u00e1c t\u1ec7p c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng khi in tr\u00ean c\u00e1c v\u1eadt li\u1ec7u th\u1ea5m h\u00fat n\u01a1i c\u00f3 th\u1ec3 x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng \u201cloang m\u1ef1c\u201d. Vi\u1ec7c s\u1eed d\u1ee5ng m\u1ee9c \u0111\u1ed9 s\u1eeda l\u1ed7i cao h\u01a1n (M\u1ee9c Q ho\u1eb7c H) c\u0169ng c\u00f3 th\u1ec3 h\u1eefu \u00edch, v\u00ec n\u00f3 cho ph\u00e9p m\u00e3 v\u1eabn c\u00f3 th\u1ec3 qu\u00e9t \u0111\u01b0\u1ee3c ngay c\u1ea3 khi t\u1edbi 30% di\u1ec7n t\u00edch b\u1ecb h\u1ecfng ho\u1eb7c che khu\u1ea5t.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n s\u1eb5n s\u00e0ng cho vi\u1ec7c in \u1ea5n, h\u00e3y s\u1eed d\u1ee5ng <a href=\"https:\/\/pageloot.com\/vi\/qr-code-generator\/\">tr\u00ecnh t\u1ea1o m\u00e3 QR<\/a> \u0111\u1ec3 t\u1ea1o c\u00e1c t\u1ec7p vector \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao v\u00e0 ki\u1ec3m tra ch\u00fang tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u m\u1ed9t \u0111\u1ee3t s\u1ea3n xu\u1ea5t l\u1edbn.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn v\u1ec1 v\u1ecb tr\u00ed v\u00e0 b\u1ed1 c\u1ee5c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ngo\u00e0i thi\u1ebft k\u1ebf k\u1ef9 thu\u1eadt c\u1ee7a m\u00e3, v\u1ecb tr\u00ed v\u1eadt l\u00fd c\u1ee7a n\u00f3 tr\u00ean s\u1ea3n ph\u1ea9m quy\u1ebft \u0111\u1ecbnh s\u1ef1 th\u00e0nh c\u00f4ng c\u1ee7a n\u00f3. B\u1ea1n ph\u1ea3i gi\u1eef g\u00ecn v\u00f9ng y\u00ean t\u0129nh, l\u00e0 v\u00f9ng \u0111\u1ec7m tr\u1ed1ng xung quanh m\u00e3. Vi\u1ec1n n\u00e0y ph\u1ea3i r\u1ed9ng \u00edt nh\u1ea5t b\u1ed1n m\u00f4-\u0111un \u0111\u1ec3 gi\u00fap m\u00e1y qu\u00e9t ph\u00e2n bi\u1ec7t m\u00e3 v\u1edbi v\u0103n b\u1ea3n ho\u1eb7c \u0111\u1ed3 h\u1ecda xung quanh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00e1nh \u0111\u1eb7t m\u00e3 QR g\u1ea7n c\u00e1c n\u1ebfp g\u1ea5p, \u0111\u01b0\u1eddng n\u1ed1i ho\u1eb7c c\u1ea1nh c\u1ee7a bao b\u00ec. C\u00e1c n\u1ebfp g\u1ea5p v\u1eadt l\u00fd c\u00f3 th\u1ec3 ph\u00e1 v\u1ee1 m\u1eabu d\u1eef li\u1ec7u, l\u00e0m cho m\u00e3 tr\u1edf n\u00ean v\u00f4 d\u1ee5ng. T\u01b0\u01a1ng t\u1ef1, n\u1ebfu b\u1ea1n \u0111\u1eb7t m\u00e3 tr\u00ean m\u1ed9t b\u1ec1 m\u1eb7t cong nh\u01b0 chai, t\u1ed1t h\u01a1n l\u00e0 \u0111\u1eb7t n\u00f3 theo chi\u1ec1u d\u1ecdc ho\u1eb7c s\u1eed d\u1ee5ng m\u1ed9t m\u00e3 nh\u1ecf h\u01a1n v\u1edbi n\u1ec1n m\u1edd \u0111\u1ec3 ng\u0103n hi\u1ec7u \u1ee9ng \u201cqu\u1ea5n\u201d l\u00e0m bi\u1ebfn d\u1ea1ng c\u00e1c \u00f4 vu\u00f4ng. \u0110\u1ec3 c\u00f3 danh s\u00e1ch ki\u1ec3m tra \u0111\u1ea7y \u0111\u1ee7 c\u00e1c m\u1eb9o thi\u1ebft k\u1ebf v\u00e0 v\u1ecb tr\u00ed, h\u00e3y xem <a href=\"https:\/\/pageloot.com\/vi\/blog\/best-practices-for-qr-code-readability\/\">c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hay nh\u1ea5t \u0111\u1ec3 \u0111\u1ecdc m\u00e3 QR<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/03\/simple-modern-illustration-aspect-ratio-1-1-white-background-with-blue-and-lig-7036-55cbb091406b.webp\" alt=\"H\u01b0\u1edbng d\u1eabn \u0111\u1eb7t QR\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 tr\u00e1nh r\u1ee7i ro ph\u1ea3i in l\u1ea1i h\u00e0ng ngh\u00ecn s\u1ea3n ph\u1ea9m do li\u00ean k\u1ebft b\u1ecb h\u1ecfng ho\u1eb7c l\u1ed7i k\u1ef9 thu\u1eadt, h\u00e3y c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng m\u00e3 QR \u0111\u1ed9ng. Nh\u1eefng m\u00e3 n\u00e0y cho ph\u00e9p b\u1ea1n c\u1eadp nh\u1eadt URL \u0111\u00edch ho\u1eb7c \u0111i\u1ec1u ch\u1ec9nh c\u00e0i \u0111\u1eb7t ngay c\u1ea3 sau khi v\u1eadt li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c in. Tr\u01b0\u1edbc khi cam k\u1ebft in h\u00e0ng lo\u1ea1t, h\u00e3y lu\u00f4n x\u00e1c minh t\u1ec7p k\u1ef9 thu\u1eadt s\u1ed1 c\u1ee7a b\u1ea1n b\u1eb1ng <a href=\"https:\/\/pageloot.com\/vi\/blog\/qr-code-print-quality-checker\/\">c\u00f4ng c\u1ee5 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng in m\u00e3 QR<\/a> \u0111\u1ec3 x\u00e1c nh\u1eadn r\u1eb1ng n\u00f3 \u0111\u00e1p \u1ee9ng t\u1ea5t c\u1ea3 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 kh\u1ea3 n\u0103ng qu\u00e9t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-39de051401bb\"><strong class=\"schema-faq-question\">K\u00edch th\u01b0\u1edbc nh\u1ecf nh\u1ea5t tuy\u1ec7t \u0111\u1ed1i m\u00e0 m\u00e3 QR c\u00f3 th\u1ec3 c\u00f3 \u0111\u1ec3 in l\u00e0 bao nhi\u00eau?<\/strong> <p class=\"schema-faq-answer\">M\u1eb7c d\u00f9 c\u00e1c ti\u00eau chu\u1ea9n ISO v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt cho ph\u00e9p c\u00e1c m\u00f4-\u0111un nh\u1ecf h\u01a1n, nh\u01b0ng m\u1ee9c t\u1ed1i thi\u1ec3u th\u1ef1c t\u1ebf cho \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh hi\u1ec7n \u0111\u1ea1i l\u00e0 0,8 x 0,8 inch (2 x 2 cm). S\u1eed d\u1ee5ng k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n \u0111\u00e1ng k\u1ec3 l\u00e0m t\u0103ng t\u1ef7 l\u1ec7 l\u1ed7i cho ng\u01b0\u1eddi d\u00f9ng c\u00f3 thi\u1ebft b\u1ecb c\u0169 h\u01a1n ho\u1eb7c trong m\u00f4i tr\u01b0\u1eddng thi\u1ebfu s\u00e1ng.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-ca17ba69edd1\"><strong class=\"schema-faq-question\">T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng n\u1ec1n trong su\u1ed1t cho m\u00e3 QR \u0111\u00e3 in kh\u00f4ng?<\/strong> <p class=\"schema-faq-answer\">\u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c khuy\u1ebfn kh\u00edch. N\u1ec1n trong su\u1ed1t l\u00e0m cho kh\u1ea3 n\u0103ng qu\u00e9t c\u1ee7a m\u00e3 ph\u1ee5 thu\u1ed9c v\u00e0o b\u1ec1 m\u1eb7t m\u00e0 n\u00f3 \u0111\u01b0\u1ee3c \u0111\u1eb7t l\u00ean. N\u1ebfu b\u1ec1 m\u1eb7t t\u1ed1i, c\u00f3 hoa v\u0103n ho\u1eb7c c\u00f3 k\u1ebft c\u1ea5u, m\u00e1y qu\u00e9t c\u00f3 th\u1ec3 s\u1ebd kh\u00f4ng \u0111\u1ecdc \u0111\u01b0\u1ee3c c\u00e1c m\u00f4-\u0111un. Lu\u00f4n s\u1eed d\u1ee5ng n\u1ec1n m\u00e0u s\u00e1ng, \u0111\u1eb7c \u0111\u1ec3 c\u00f3 \u0111\u1ed9 tin c\u1eady t\u1ed1i \u0111a.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-c4dd9c759ef6\"><strong class=\"schema-faq-question\">L\u00e0m c\u00e1ch n\u00e0o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u00e3 QR ho\u1ea1t \u0111\u1ed9ng tr\u00ean bao b\u00ec ph\u1ea3n chi\u1ebfu?<\/strong> <p class=\"schema-faq-answer\">To overcome glare on reflective materials like metallic bags or glass, you should print a white matte &#8220;patch&#8221; or under-layer directly behind the QR code. This creates a non-reflective surface that provides the necessary contrast for a QR code scanner to function properly.<\/p> <\/div> <\/div>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u c\u00e1ch c\u00e1c k\u1ef9 thu\u1eadt in nh\u01b0 k\u00edch th\u01b0\u1edbc, \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n v\u00e0 v\u1eadt li\u1ec7u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng qu\u00e9t m\u00e3 QR. T\u1ed1i \u01b0u h\u00f3a c\u00e1c t\u1ec7p in v\u00e0 v\u1ecb tr\u00ed \u0111\u1eb7t \u0111\u1ec3 c\u00f3 k\u1ebft qu\u1ea3 \u0111\u00e1ng tin c\u1eady.<\/p>","protected":false},"author":17,"featured_media":50784,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[2635],"tags":[],"class_list":["post-46372","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.7 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Guidelines for Printing Reliable and Scannable QR Codes<\/title>\n<meta name=\"description\" content=\"Learn how printing techniques like size, contrast, and materials impact QR code scannability. 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Optimize your print files and placement for reliable results.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pageloot.com\/vi\/blog\/how-printing-techniques-impact-qr-code-scannability\/\" \/>\n<meta property=\"og:site_name\" content=\"Pageloot\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/pageloot\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-09-13T00:57:23+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-22T13:14:08+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/03\/photorealistic-lifestyle-photo-aspect-ratio-1-1-a-print-designer-in-a-bright-m-5047-4335354d2db2.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"1024\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Siim T\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@getpageloot\" \/>\n<meta name=\"twitter:site\" content=\"@getpageloot\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"Siim T\" \/>\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\":\"Article\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/how-printing-techniques-impact-qr-code-scannability\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/how-printing-techniques-impact-qr-code-scannability\\\/\"},\"author\":{\"name\":\"Siim T\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#\\\/schema\\\/person\\\/fa28992c2e52546f0812833bac852dfe\"},\"headline\":\"Guidelines for Printing Reliable and Scannable QR Codes\",\"datePublished\":\"2025-09-13T00:57:23+00:00\",\"dateModified\":\"2026-04-22T13:14:08+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/how-printing-techniques-impact-qr-code-scannability\\\/\"},\"wordCount\":1049,\"publisher\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/how-printing-techniques-impact-qr-code-scannability\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/photorealistic-lifestyle-photo-aspect-ratio-1-1-a-print-designer-in-a-bright-m-5047-4335354d2db2.webp\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"vi\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/how-printing-techniques-impact-qr-code-scannability\\\/\",\"url\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/how-printing-techniques-impact-qr-code-scannability\\\/\",\"name\":\"Guidelines for Printing Reliable and Scannable QR Codes\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/how-printing-techniques-impact-qr-code-scannability\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/how-printing-techniques-impact-qr-code-scannability\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/photorealistic-lifestyle-photo-aspect-ratio-1-1-a-print-designer-in-a-bright-m-5047-4335354d2db2.webp\",\"datePublished\":\"2025-09-13T00:57:23+00:00\",\"dateModified\":\"2026-04-22T13:14:08+00:00\",\"description\":\"Learn how printing techniques like size, contrast, and materials impact QR code scannability. 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Siim c\u00f3 n\u1ec1n t\u1ea3ng k\u1ef9 thu\u1eadt s\u1ed1 s\u00e2u r\u1ed9ng v\u1edbi h\u01a1n 10 n\u0103m kinh nghi\u1ec7m v\u1eefng ch\u1eafc trong l\u0129nh v\u1ef1c Ph\u1ea7n m\u1ec1m d\u01b0\u1edbi d\u1ea1ng d\u1ecbch v\u1ee5 (SaaS), m\u1ed9t minh ch\u1ee9ng cho ki\u1ebfn th\u1ee9c s\u00e2u r\u1ed9ng c\u1ee7a \u00f4ng v\u1ec1 c\u00e1c gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt s\u1ed1.","sameAs":["https:\/\/www.linkedin.com\/in\/siim-tiigimagi\/"]},{"@type":"Question","@id":"https:\/\/pageloot.com\/blog\/how-printing-techniques-impact-qr-code-scannability\/#faq-question-39de051401bb","position":1,"url":"https:\/\/pageloot.com\/blog\/how-printing-techniques-impact-qr-code-scannability\/#faq-question-39de051401bb","name":"K\u00edch th\u01b0\u1edbc nh\u1ecf nh\u1ea5t tuy\u1ec7t \u0111\u1ed1i m\u00e0 m\u00e3 QR c\u00f3 th\u1ec3 c\u00f3 \u0111\u1ec3 in l\u00e0 bao nhi\u00eau?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"While ISO standards technically allow for smaller modules, the practical minimum for modern smartphones is 0.8 x 0.8 inches (2 x 2 cm). Using a size smaller than this significantly increases the failure rate for users with older devices or in low-light environments.","inLanguage":"vi"},"inLanguage":"vi"},{"@type":"Question","@id":"https:\/\/pageloot.com\/blog\/how-printing-techniques-impact-qr-code-scannability\/#faq-question-ca17ba69edd1","position":2,"url":"https:\/\/pageloot.com\/blog\/how-printing-techniques-impact-qr-code-scannability\/#faq-question-ca17ba69edd1","name":"T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng n\u1ec1n trong su\u1ed1t cho m\u00e3 QR \u0111\u00e3 in kh\u00f4ng?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"It is generally discouraged. A transparent background makes the code's scannability dependent on the surface it is placed on. If the surface is dark, patterned, or textured, the scanner will likely fail to read the modules. Always use a solid, light-colored background for maximum reliability.","inLanguage":"vi"},"inLanguage":"vi"},{"@type":"Question","@id":"https:\/\/pageloot.com\/blog\/how-printing-techniques-impact-qr-code-scannability\/#faq-question-c4dd9c759ef6","position":3,"url":"https:\/\/pageloot.com\/blog\/how-printing-techniques-impact-qr-code-scannability\/#faq-question-c4dd9c759ef6","name":"L\u00e0m c\u00e1ch n\u00e0o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u00e3 QR ho\u1ea1t \u0111\u1ed9ng tr\u00ean bao b\u00ec ph\u1ea3n chi\u1ebfu?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"To overcome glare on reflective materials like metallic bags or glass, you should print a white matte u005cu0022patchu005cu0022 or under-layer directly behind the QR code. This creates a non-reflective surface that provides the necessary contrast for a QR code scanner to function properly.","inLanguage":"vi"},"inLanguage":"vi"}]}},"_links":{"self":[{"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/46372","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/comments?post=46372"}],"version-history":[{"count":5,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/46372\/revisions"}],"predecessor-version":[{"id":52758,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/46372\/revisions\/52758"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/media\/50784"}],"wp:attachment":[{"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/media?parent=46372"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/categories?post=46372"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/tags?post=46372"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}