{"id":45882,"date":"2025-09-05T14:28:30","date_gmt":"2025-09-05T14:28:30","guid":{"rendered":"https:\/\/staging.pageloot.com\/uncategorized\/qr-code-sizing-for-different-print-materials\/"},"modified":"2026-04-22T13:14:09","modified_gmt":"2026-04-22T13:14:09","slug":"qr-code-sizing-for-different-print-materials","status":"publish","type":"post","link":"https:\/\/pageloot.com\/vi\/blog\/qr-code-sizing-for-different-print-materials\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn v\u1ec1 k\u00edch th\u01b0\u1edbc m\u00e3 QR tr\u00ean v\u1eadt li\u1ec7u in"},"content":{"rendered":"<p class=\"wp-block-paragraph\">B\u1ea1n \u0111\u00e3 bao gi\u1edd tri\u1ec3n khai m\u1ed9t chi\u1ebfn d\u1ecbch in \u1ea5n ch\u1ec9 \u0111\u1ec3 nh\u1eadn ra r\u1eb1ng kh\u00e1ch h\u00e0ng c\u1ee7a m\u00ecnh kh\u00f4ng th\u1ec3 qu\u00e9t m\u00e3 QR? M\u1ed9t m\u00e3 qu\u00e1 nh\u1ecf ho\u1eb7c m\u1edd s\u1ebd d\u1eabn \u0111\u1ebfn s\u1ef1 kh\u00f3 ch\u1ecbu c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 l\u00e3ng ph\u00ed chi ph\u00ed ti\u1ebfp th\u1ecb. H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p c\u00e1c k\u00edch th\u01b0\u1edbc k\u1ef9 thu\u1eadt v\u00e0 c\u00f4ng th\u1ee9c t\u00ednh k\u00edch th\u01b0\u1edbc b\u1ea1n c\u1ea7n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u00e3 QR c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 qu\u00e9t \u0111\u00e1ng tin c\u1eady tr\u00ean m\u1ecdi \u0111\u1ecbnh d\u1ea1ng in \u1ea5n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00f4ng th\u1ee9c c\u1ed1t l\u00f5i: T\u1ef7 l\u1ec7 qu\u00e9t 10:1<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc m\u00e3 QR l\u00e0 kho\u1ea3ng c\u00e1ch xem. Theo nguy\u00ean t\u1eafc chung, b\u1ea1n n\u00ean s\u1eed d\u1ee5ng t\u1ef7 l\u1ec7 <strong>10:1<\/strong> \u0111\u1ec3 t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 k\u00edch th\u01b0\u1edbc m\u00e3 QR c\u1ee7a b\u1ea1n ph\u1ea3i b\u1eb1ng kho\u1ea3ng m\u1ed9t ph\u1ea7n m\u01b0\u1eddi kho\u1ea3ng c\u00e1ch m\u00e0 n\u00f3 s\u1ebd \u0111\u01b0\u1ee3c qu\u00e9t. M\u1ed1i quan h\u1ec7 n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng camera \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh c\u00f3 th\u1ec3 ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng c\u00e1c m\u00f4-\u0111un ri\u00eang l\u1ebb, l\u00e0 c\u00e1c \u00f4 vu\u00f4ng nh\u1ecf b\u00ean trong m\u00e3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c tu\u00e2n th\u1ee7 \u0111i\u1ec1u n\u00e0y <a href=\"https:\/\/pageloot.com\/vi\/how-to\/qr-code-size-guide\/\">H\u01b0\u1edbng d\u1eabn k\u00edch th\u01b0\u1edbc m\u00e3 QR<\/a> cung c\u1ea5p m\u1ed9t c\u01a1 s\u1edf \u0111\u00e1ng tin c\u1eady cho nhi\u1ec1u t\u00ecnh hu\u1ed1ng kh\u00e1c nhau. V\u00ed d\u1ee5, n\u1ebfu ng\u01b0\u1eddi d\u00f9ng qu\u00e9t m\u1ed9t t\u1edd r\u01a1i t\u1eeb kho\u1ea3ng c\u00e1ch 10 inch, m\u00e3 ph\u1ea3i r\u1ed9ng \u00edt nh\u1ea5t 1 inch. N\u1ebfu b\u1ea1n \u0111ang thi\u1ebft k\u1ebf m\u1ed9t \u00e1p ph\u00edch s\u1ebd \u0111\u01b0\u1ee3c qu\u00e9t t\u1eeb kho\u1ea3ng c\u00e1ch 3 feet, m\u00e3 c\u1ea7n r\u1ed9ng \u00edt nh\u1ea5t 3,6 inch. \u0110\u1ed1i v\u1edbi c\u00e1c c\u00f4ng tr\u00ecnh l\u1eafp \u0111\u1eb7t quy m\u00f4 l\u1edbn nh\u01b0 bi\u1ec3n qu\u1ea3ng c\u00e1o, m\u00e3 c\u00f3 th\u1ec3 c\u1ea7n r\u1ed9ng 1 m\u00e9t tr\u1edf l\u00ean \u0111\u1ec3 c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c t\u1eeb kho\u1ea3ng c\u00e1ch 30 feet.<\/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-infographic-square-format-white-background-black-text-blue-and-light-3736-41dcdf52da5b.webp\" alt=\"Bi\u1ec3u \u0111\u1ed3 k\u00edch th\u01b0\u1edbc m\u00e3 QR\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">K\u00edch th\u01b0\u1edbc \u0111\u1ec1 xu\u1ea5t cho c\u00e1c \u0111\u1ecbnh d\u1ea1ng in ph\u1ed5 bi\u1ebfn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau c\u00f3 kho\u1ea3ng c\u00e1ch xem ti\u00eau chu\u1ea9n quy\u1ebft \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u c\u1ee7a ch\u00fang. \u0110\u1ed1i v\u1edbi c\u00e1c v\u1eadt ph\u1ea9m nh\u1ecf nh\u01b0 danh thi\u1ebfp, k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb l\u00e0 0,8 x 0,8 inch, m\u1eb7c d\u00f9 1 x 1 inch l\u00e0 l\u00fd t\u01b0\u1edfng \u0111\u1ec3 c\u00f3 \u0111\u1ed9 tin c\u1eady t\u1ed1i \u0111a tr\u00ean c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c nhau. N\u1ebfu b\u1ea1n \u0111ang l\u00e0m vi\u1ec7c tr\u00ean m\u1ed9t <a href=\"https:\/\/pageloot.com\/vi\/how-to\/business-card-design-qr-code\/\">thi\u1ebft k\u1ebf danh thi\u1ebfp<\/a>, vi\u1ec7c gi\u1ea3m k\u00edch th\u01b0\u1edbc xu\u1ed1ng d\u01b0\u1edbi 0,4 inch l\u00e0 c\u1ef1c k\u1ef3 r\u1ee7i ro v\u00ec \u00e1nh s\u00e1ng k\u00e9m ho\u1eb7c camera c\u0169 h\u01a1n c\u00f3 th\u1ec3 kh\u00f4ng thu \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u. B\u1ea1n c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y l\u1eddi khuy\u00ean c\u1ee5 th\u1ec3 h\u01a1n trong h\u01b0\u1edbng d\u1eabn c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <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<p class=\"wp-block-paragraph\">C\u00e1c v\u1eadt li\u1ec7u c\u1ee1 trung b\u00ecnh nh\u01b0 t\u1edd r\u01a1i, t\u00e0i li\u1ec7u qu\u1ea3ng c\u00e1o v\u00e0 bao b\u00ec s\u1ea3n ph\u1ea9m y\u00eau c\u1ea7u m\u1ed9t di\u1ec7n t\u00edch l\u1edbn h\u01a1n m\u1ed9t ch\u00fat. T\u1edd r\u01a1i th\u01b0\u1eddng c\u00f3 k\u00edch th\u01b0\u1edbc t\u1eeb 1,6 \u0111\u1ebfn 2,8 inch \u0111\u1ec3 t\u00ednh \u0111\u1ebfn kho\u1ea3ng c\u00e1ch qu\u00e9t kho\u1ea3ng m\u1ed9t m\u00e9t. \u0110\u1ed1i v\u1edbi <a href=\"https:\/\/pageloot.com\/vi\/qr-codes-on\/products\/\">bao b\u00ec s\u1ea3n ph\u1ea9m<\/a>, bao b\u00ec s\u1ea3n ph\u1ea9m, k\u00edch th\u01b0\u1edbc t\u1eeb 0,8 \u0111\u1ebfn 1,2 inch l\u00e0 ti\u00eau chu\u1ea9n, m\u1eb7c d\u00f9 \u0111i\u1ec1u n\u00e0y thay \u0111\u1ed5i t\u00f9y thu\u1ed9c v\u00e0o h\u00ecnh d\u1ea1ng c\u1ee7a v\u1eadt ch\u1ee9a. Bi\u1ec3n b\u00e1o v\u00e0 \u00e1p ph\u00edch d\u00e0nh cho kho\u1ea3ng c\u00e1ch t\u1eeb 3 \u0111\u1ebfn 10 feet n\u00ean c\u00f3 m\u00e3 r\u1ed9ng t\u1eeb 4 \u0111\u1ebfn 12 inch \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng truy c\u1eadp.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">M\u1eadt \u0111\u1ed9 d\u1eef li\u1ec7u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng qu\u00e9t nh\u01b0 th\u1ebf n\u00e0o<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eadt \u0111\u1ed9 c\u1ee7a m\u00e3 QR \u0111\u1ec1 c\u1eadp \u0111\u1ebfn s\u1ed1 l\u01b0\u1ee3ng m\u00f4-\u0111un \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i v\u00e0o h\u00ecnh vu\u00f4ng. M\u1ed9t m\u00e3 ch\u1ee9a URL d\u00e0i, ph\u1ee9c t\u1ea1p s\u1ebd c\u00f3 nhi\u1ec1u m\u00f4-\u0111un h\u01a1n m\u1ed9t m\u00e3 c\u00f3 li\u00ean k\u1ebft \u0111\u01a1n gi\u1ea3n. Khi m\u1eadt \u0111\u1ed9 n\u00e0y t\u0103ng l\u00ean, m\u1ed7i m\u00f4-\u0111un ri\u00eang l\u1ebb tr\u1edf n\u00ean nh\u1ecf h\u01a1n. H\u00e3y ngh\u0129 v\u1ec1 c\u00e1c m\u00f4-\u0111un gi\u1ed1ng nh\u01b0 c\u00e1c pixel tr\u00ean m\u00e0n h\u00ecnh; n\u1ebfu ch\u00fang qu\u00e1 nh\u1ecf v\u00e0 \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i qu\u00e1 ch\u1eb7t, m\u00e1y qu\u00e9t kh\u00f4ng th\u1ec3 \u201c\u0111\u1ecdc\u201d h\u00ecnh \u1ea3nh m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c \u1edf m\u1ed9t kho\u1ea3ng c\u00e1ch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 gi\u1eef cho m\u00e3 QR c\u1ee7a b\u1ea1n s\u1ea1ch s\u1ebd v\u00e0 c\u00f3 th\u1ec3 qu\u00e9t \u0111\u01b0\u1ee3c \u1edf k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n, b\u1ea1n n\u00ean s\u1eed d\u1ee5ng m\u00e3 QR \u0111\u1ed9ng. B\u1edfi v\u00ec m\u00e3 \u0111\u1ed9ng li\u00ean k\u1ebft \u0111\u1ebfn m\u1ed9t URL gi\u1eef ch\u1ed7 ng\u1eafn g\u1ecdn chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn \u0111\u00edch c\u1ee7a b\u1ea1n, m\u1eabu m\u00e3 v\u1eabn \u0111\u01a1n gi\u1ea3n v\u00e0 tho\u00e1ng \u0111\u00e3ng. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch cho m\u1ed9t <a href=\"https:\/\/pageloot.com\/vi\/vcard-qr-code-generator\/\">Tr\u00ecnh t\u1ea1o m\u00e3 QR vCard<\/a> ho\u1eb7c m\u1ed9t <a href=\"https:\/\/pageloot.com\/vi\/pdf-qr-code-generator\/\">Tr\u00ecnh t\u1ea1o m\u00e3 QR PDF<\/a> n\u01a1i d\u1eef li\u1ec7u th\u00f4 n\u1ebfu kh\u00f4ng s\u1ebd t\u1ea1o ra m\u1ed9t m\u1eabu r\u1ea5t d\u00e0y \u0111\u1eb7c, kh\u00f3 qu\u00e9t.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>S\u1eb5n s\u00e0ng t\u1ea1o m\u00e3 c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao cho d\u1ef1 \u00e1n ti\u1ebfp theo c\u1ee7a b\u1ea1n? S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 c\u1ee7a ch\u00fang t\u00f4i <a href=\"https:\/\/pageloot.com\/vi\/qr-code-generator\/\">tr\u00ecnh t\u1ea1o m\u00e3 QR<\/a> \u0111\u1ec3 thi\u1ebft k\u1ebf v\u00e0 t\u1ea3i xu\u1ed1ng c\u00e1c t\u1ec7p vector ngay h\u00f4m nay.<\/strong><\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt \u0111\u1ec3 in ch\u1ea5t l\u01b0\u1ee3ng cao<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">K\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd ch\u1ec9 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a ph\u01b0\u01a1ng tr\u00ecnh kh\u1ea3 n\u0103ng qu\u00e9t. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o m\u00e3 ho\u1ea1t \u0111\u1ed9ng, qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t in \u1ea5n c\u1ee7a b\u1ea1n ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt c\u1ee5 th\u1ec3.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>  \u0110\u1ed9 ph\u00e2n gi\u1ea3i v\u00e0 DPI: Lu\u00f4n in \u1edf m\u1ee9c t\u1ed1i thi\u1ec3u <strong>300 DPI<\/strong>. B\u1ea3n in c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u1ea5p d\u1eabn \u0111\u1ebfn c\u00e1c c\u1ea1nh m\u1edd l\u00e0m nhi\u1ec5u lo\u1ea1n logic c\u1ee7a m\u00e1y qu\u00e9t.<\/li>\n<li>  \u0110\u1ecbnh d\u1ea1ng t\u1ec7p: S\u1eed d\u1ee5ng c\u00e1c \u0111\u1ecbnh d\u1ea1ng vector nh\u01b0 SVG, EPS ho\u1eb7c PDF. Ch\u00fang cho ph\u00e9p b\u1ea1n \u0111i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc m\u00e3 \u0111\u1ebfn b\u1ea5t k\u1ef3 k\u00edch th\u01b0\u1edbc n\u00e0o m\u00e0 kh\u00f4ng l\u00e0m m\u1ea5t \u0111\u1ed9 s\u1eafc n\u00e9t. H\u01b0\u1edbng d\u1eabn chi ti\u1ebft c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong <a href=\"https:\/\/pageloot.com\/vi\/blog\/qr-code-print-resolution-guide\/\">h\u01b0\u1edbng d\u1eabn \u0111\u1ed9 ph\u00e2n gi\u1ea3i in m\u00e3 QR<\/a>.<\/li>\n<li>  \u0110\u1ed9 t\u01b0\u01a1ng ph\u1ea3n m\u00e0u s\u1eafc: M\u00e1y qu\u00e9t y\u00eau c\u1ea7u s\u1ef1 ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng gi\u1eefa c\u00e1c m\u00f4-\u0111un. M\u1ee5c ti\u00eau l\u00e0 t\u1ef7 l\u1ec7 t\u01b0\u01a1ng ph\u1ea3n \u00edt nh\u1ea5t 4:1, l\u00fd t\u01b0\u1edfng nh\u1ea5t l\u00e0 s\u1eed d\u1ee5ng c\u00e1c m\u00f4-\u0111un t\u1ed1i tr\u00ean n\u1ec1n s\u00e1ng. B\u1ea1n c\u00f3 th\u1ec3 t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 c\u00e1ch ch\u1ecdn m\u00e0u trong <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>.<\/li>\n<li>  V\u00f9ng y\u00ean t\u0129nh: M\u1ed7i m\u00e3 y\u00eau c\u1ea7u m\u1ed9t l\u1ec1 kh\u00f4ng gian tr\u1ed1ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 v\u00f9ng y\u00ean t\u0129nh. V\u00f9ng n\u00e0y ph\u1ea3i r\u1ed9ng \u00edt nh\u1ea5t b\u1ed1n m\u00f4-\u0111un \u0111\u1ec3 ng\u0103n m\u00e1y qu\u00e9t b\u1ecb ph\u00e2n t\u00e2m b\u1edfi v\u0103n b\u1ea3n ho\u1eb7c \u0111\u1ed3 h\u1ecda xung quanh.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Qu\u1ea3n l\u00fd bi\u1ebfn d\u1ea1ng b\u1ec1 m\u1eb7t v\u00e0 m\u00f4i tr\u01b0\u1eddng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1eadt li\u1ec7u b\u1ea1n in l\u00ean c\u00f3 th\u1ec3 l\u00e0m bi\u1ebfn d\u1ea1ng v\u1eadt l\u00fd k\u00edch th\u01b0\u1edbc c\u1ee7a m\u00e3. V\u00ed d\u1ee5, <a href=\"https:\/\/pageloot.com\/vi\/blog\/how-printing-techniques-impact-qr-code-scannability\/\">c\u00e1ch c\u00e1c k\u1ef9 thu\u1eadt in \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng qu\u00e9t m\u00e3 QR<\/a> ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0o c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 lem m\u1ef1c. Tr\u00ean c\u00e1c v\u1eadt li\u1ec7u th\u1ea5m h\u00fat nh\u01b0 v\u1ea3i ho\u1eb7c gi\u1ea5y c\u00f3 v\u00e2n, m\u1ef1c c\u00f3 th\u1ec3 lan ra, l\u00e0m m\u1edf r\u1ed9ng c\u00e1c m\u00f4-\u0111un t\u1ed1i v\u00e0 thu h\u1eb9p c\u00e1c kho\u1ea3ng tr\u1eafng gi\u1eefa ch\u00fang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng nh\u01b0 \u00e1nh s\u00e1ng v\u00e0 \u0111\u1ed9 cong b\u1ec1 m\u1eb7t c\u0169ng \u0111\u00f3ng m\u1ed9t vai tr\u00f2. N\u1ebfu b\u1ea1n in tr\u00ean m\u1ed9t b\u1ec1 m\u1eb7t cong, ch\u1eb3ng h\u1ea1n nh\u01b0 chai ho\u1eb7c lon, m\u00e1y \u1ea3nh kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y to\u00e0n b\u1ed9 m\u00e3 c\u00f9ng m\u1ed9t l\u00fac n\u1ebfu n\u00f3 qu\u1ea5n qu\u00e1 xa quanh h\u00ecnh tr\u1ee5. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0y, b\u1ea1n n\u00ean \u0111\u1eb7t m\u00e3 \u1edf v\u1ecb tr\u00ed ph\u1eb3ng nh\u1ea5t c\u00f3 th\u1ec3 v\u00e0 t\u0103ng k\u00edch th\u01b0\u1edbc t\u1ed5ng th\u1ec3 l\u00ean kho\u1ea3ng 20% \u0111\u1ec3 b\u00f9 \u0111\u1eafp. Ti\u1ebfp theo <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> li\u00ean quan \u0111\u1ebfn vi\u1ec7c th\u1eed nghi\u1ec7m m\u1ed9t b\u1ea3n sao duy nh\u1ea5t tr\u00ean v\u1eadt li\u1ec7u th\u1ef1c t\u1ebf trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u00e1nh s\u00e1ng kh\u00e1c nhau tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n m\u1ed9t \u0111\u1ee3t in \u0111\u1ea7y \u0111\u1ee7.<\/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-illustration-square-format-white-background-with-blue-and-light-g-9807-a2830526836a.webp\" alt=\"M\u1eb9o in m\u00e3 QR\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h3>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-f06c0a713d5a\"><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 l\u00e0 bao nhi\u00eau?<\/strong> <p class=\"schema-faq-answer\">M\u1eb7c d\u00f9 m\u1ed9t s\u1ed1 m\u00e1y qu\u00e9t cao c\u1ea5p c\u00f3 th\u1ec3 \u0111\u1ecdc m\u00e3 nh\u1ecf t\u1edbi 0,4 inch, nh\u01b0ng m\u1ee9c t\u1ed1i thi\u1ec3u th\u1ef1c t\u1ebf cho \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh ti\u00eau d\u00f9ng l\u00e0 0,8 x 0,8 inch. B\u1ea5t c\u1ee9 th\u1ee9 g\u00ec nh\u1ecf h\u01a1n s\u1ebd l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 nguy c\u01a1 ng\u01b0\u1eddi d\u00f9ng c\u00f3 \u0111i\u1ec7n tho\u1ea1i c\u0169 h\u01a1n ho\u1eb7c \u00e1nh s\u00e1ng k\u00e9m s\u1ebd kh\u00f4ng th\u1ec3 qu\u00e9t m\u00e3.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-8cf5bd04229a\"><strong class=\"schema-faq-question\">L\u01b0\u1ee3ng d\u1eef li\u1ec7u b\u00ean trong m\u00e3 c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u00edch th\u01b0\u1edbc c\u1ee7a n\u00f3 kh\u00f4ng?<\/strong> <p class=\"schema-faq-answer\">C\u00f3, nhi\u1ec1u d\u1eef li\u1ec7u h\u01a1n t\u1ea1o ra m\u1ed9t m\u1eabu d\u00e0y \u0111\u1eb7c h\u01a1n v\u1edbi c\u00e1c m\u00f4-\u0111un nh\u1ecf h\u01a1n. \u0110\u1ec3 gi\u1eef cho m\u00e3 c\u00f3 th\u1ec3 qu\u00e9t \u0111\u01b0\u1ee3c \u1edf k\u00edch th\u01b0\u1edbc nh\u1ecf, h\u00e3y s\u1eed d\u1ee5ng m\u00e3 QR \u0111\u1ed9ng \u0111\u1ec3 gi\u1ea3m thi\u1ec3u m\u1eadt \u0111\u1ed9 d\u1eef li\u1ec7u, cho ph\u00e9p c\u00e1c m\u00f4-\u0111un \u0111\u1ee7 l\u1edbn \u0111\u1ec3 m\u00e1y \u1ea3nh ph\u00e2n bi\u1ec7t.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1adeeff1aa97\"><strong class=\"schema-faq-question\">M\u1ed9t logo b\u00ean trong m\u00e3 QR \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u00edch th\u01b0\u1edbc nh\u01b0 th\u1ebf n\u00e0o?<\/strong> <p class=\"schema-faq-answer\">Th\u00eam logo y\u00eau c\u1ea7u m\u1ee9c \u0111\u1ed9 s\u1eeda l\u1ed7i cao h\u01a1n (C\u1ea5p Q ho\u1eb7c H), \u0111i\u1ec1u n\u00e0y l\u00e0m cho m\u00e3 d\u00e0y \u0111\u1eb7c h\u01a1n. N\u1ebfu b\u1ea1n bao g\u1ed3m th\u01b0\u01a1ng hi\u1ec7u, b\u1ea1n n\u00ean t\u0103ng k\u00edch th\u01b0\u1edbc t\u1ed5ng th\u1ec3 c\u1ee7a m\u00e3 QR l\u00ean \u00edt nh\u1ea5t 15% \u0111\u1ebfn 20% \u0111\u1ec3 duy tr\u00ec c\u00f9ng m\u1ee9c \u0111\u1ed9 d\u1ec5 \u0111\u1ecdc. Khi b\u1ea1n s\u1eb5n s\u00e0ng tri\u1ec3n khai c\u00e1c ti\u00eau chu\u1ea9n n\u00e0y v\u00e0o t\u00e0i li\u1ec7u ti\u1ebfp th\u1ecb c\u1ee7a m\u00ecnh, h\u00e3y t\u1eadp trung v\u00e0o m\u1ed1i quan h\u1ec7 gi\u1eefa kho\u1ea3ng c\u00e1ch qu\u00e9t v\u00e0 m\u1eadt \u0111\u1ed9 m\u00f4-\u0111un. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c t\u1ec7p vector v\u00e0 gi\u1eef cho d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n \u0111\u01a1n gi\u1ea3n v\u1edbi c\u00e1c li\u00ean k\u1ebft \u0111\u1ed9ng, b\u1ea1n \u0111\u1ea3m b\u1ea3o r\u1eb1ng ph\u01b0\u01a1ng ti\u1ec7n in c\u1ee7a b\u1ea1n \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u1ea7u n\u1ed1i \u0111\u00e1ng tin c\u1eady \u0111\u1ebfn n\u1ed9i dung k\u1ef9 thu\u1eadt s\u1ed1 c\u1ee7a b\u1ea1n. \u0110\u1ec3 b\u1eaft \u0111\u1ea7u v\u1edbi c\u00e1c m\u00e3 ch\u1ea5t l\u01b0\u1ee3ng cao, s\u1eb5n s\u00e0ng in, h\u00e3y kh\u00e1m ph\u00e1 c\u00e1c c\u00f4ng c\u1ee5 t\u1ea1i Pageloot \u0111\u1ec3 ch\u1ecdn \u0111\u1ecbnh d\u1ea1ng ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u chi\u1ebfn d\u1ecbch c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n.<\/p> <\/div> <\/div>","protected":false},"excerpt":{"rendered":"<p>\u0110\u1ea3m b\u1ea3o m\u00e3 QR c\u1ee7a b\u1ea1n qu\u00e9t \u0111\u00e1ng tin c\u1eady v\u1edbi h\u01b0\u1edbng d\u1eabn \u0111\u1ecbnh c\u1ee1 n\u00e0y khi in. T\u00ecm hi\u1ec3u c\u00f4ng th\u1ee9c t\u1ef7 l\u1ec7 10:1 v\u00e0 k\u00edch th\u01b0\u1edbc l\u00fd t\u01b0\u1edfng cho danh thi\u1ebfp, t\u1edd r\u01a1i v\u00e0 \u00e1p ph\u00edch.<\/p>","protected":false},"author":17,"featured_media":50394,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[2635],"tags":[],"class_list":["post-45882","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 QR Code Sizing on Printed Materials<\/title>\n<meta name=\"description\" content=\"Ensure your QR codes scan reliably with this sizing guide for print. Learn the 10:1 ratio formula and ideal dimensions for business cards, flyers, and posters.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pageloot.com\/vi\/blog\/qr-code-sizing-for-different-print-materials\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Guidelines for QR Code Sizing on Printed Materials\" \/>\n<meta property=\"og:description\" content=\"Ensure your QR codes scan reliably with this sizing guide for print. Learn the 10:1 ratio formula and ideal dimensions for business cards, flyers, and posters.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pageloot.com\/vi\/blog\/qr-code-sizing-for-different-print-materials\/\" \/>\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=\"2025-09-05T14:28:30+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-22T13:14:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/03\/photorealistic-lifestyle-scene-for-a-marketing-article-about-qr-code-sizing-on-p-5013-d1e351362573.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1408\" \/>\n\t<meta property=\"og:image:height\" content=\"768\" \/>\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\\\/qr-code-sizing-for-different-print-materials\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-sizing-for-different-print-materials\\\/\"},\"author\":{\"name\":\"Siim T\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#\\\/schema\\\/person\\\/fa28992c2e52546f0812833bac852dfe\"},\"headline\":\"Guidelines for QR Code Sizing on Printed Materials\",\"datePublished\":\"2025-09-05T14:28:30+00:00\",\"dateModified\":\"2026-04-22T13:14:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-sizing-for-different-print-materials\\\/\"},\"wordCount\":1070,\"publisher\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-sizing-for-different-print-materials\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/photorealistic-lifestyle-scene-for-a-marketing-article-about-qr-code-sizing-on-p-5013-d1e351362573.webp\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"vi\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-sizing-for-different-print-materials\\\/\",\"url\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-sizing-for-different-print-materials\\\/\",\"name\":\"Guidelines for QR Code Sizing on Printed Materials\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-sizing-for-different-print-materials\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-sizing-for-different-print-materials\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/photorealistic-lifestyle-scene-for-a-marketing-article-about-qr-code-sizing-on-p-5013-d1e351362573.webp\",\"datePublished\":\"2025-09-05T14:28:30+00:00\",\"dateModified\":\"2026-04-22T13:14:09+00:00\",\"description\":\"Ensure your QR codes scan reliably with this sizing guide for print. 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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\/qr-code-sizing-for-different-print-materials\/#faq-question-f06c0a713d5a","position":1,"url":"https:\/\/pageloot.com\/blog\/qr-code-sizing-for-different-print-materials\/#faq-question-f06c0a713d5a","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 l\u00e0 bao nhi\u00eau?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"While some high-end scanners can read codes as small as 0.4 inches, the practical minimum for consumer smartphones is 0.8 x 0.8 inches. Anything smaller significantly increases the risk that users with older phones or poor lighting will be unable to scan the code.","inLanguage":"vi"},"inLanguage":"vi"},{"@type":"Question","@id":"https:\/\/pageloot.com\/blog\/qr-code-sizing-for-different-print-materials\/#faq-question-8cf5bd04229a","position":2,"url":"https:\/\/pageloot.com\/blog\/qr-code-sizing-for-different-print-materials\/#faq-question-8cf5bd04229a","name":"L\u01b0\u1ee3ng d\u1eef li\u1ec7u b\u00ean trong m\u00e3 c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u00edch th\u01b0\u1edbc c\u1ee7a n\u00f3 kh\u00f4ng?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, more data creates a denser pattern with smaller modules. To keep the code scannable at small sizes, use dynamic QR codes to minimize the data density, allowing the modules to remain large enough for cameras to distinguish.","inLanguage":"vi"},"inLanguage":"vi"},{"@type":"Question","@id":"https:\/\/pageloot.com\/blog\/qr-code-sizing-for-different-print-materials\/#faq-question-1adeeff1aa97","position":3,"url":"https:\/\/pageloot.com\/blog\/qr-code-sizing-for-different-print-materials\/#faq-question-1adeeff1aa97","name":"M\u1ed9t logo b\u00ean trong m\u00e3 QR \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u00edch th\u01b0\u1edbc nh\u01b0 th\u1ebf n\u00e0o?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Adding a logo requires a higher error correction level (Level Q or H), which makes the code denser. If you include branding, you should increase the overall size of the QR code by at least 15% to 20% to maintain the same level of readability. When you are ready to implement these standards into your marketing materials, focus on the relationship between scanning distance and module density. By utilizing vector files and keeping your data simple with dynamic links, you ensure that your print media serves as a reliable bridge to your digital content. To get started with high-quality, print-ready codes, explore the tools at Pageloot to choose the format that fits your specific campaign needs.","inLanguage":"vi"},"inLanguage":"vi"}]}},"_links":{"self":[{"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/45882","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=45882"}],"version-history":[{"count":6,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/45882\/revisions"}],"predecessor-version":[{"id":52767,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/45882\/revisions\/52767"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/media\/50394"}],"wp:attachment":[{"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/media?parent=45882"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/categories?post=45882"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/tags?post=45882"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}