{"id":1434,"date":"2019-04-16T19:50:21","date_gmt":"2019-04-16T19:50:21","guid":{"rendered":"https:\/\/pageloot.com\/?p=1434"},"modified":"2026-05-04T18:53:01","modified_gmt":"2026-05-04T18:53:01","slug":"qr-code-size-guide","status":"publish","type":"post","link":"https:\/\/pageloot.com\/vi\/how-to\/qr-code-size-guide\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn v\u1ec1 K\u00edch th\u01b0\u1edbc M\u00e3 QR v\u00e0 Kho\u1ea3ng c\u00e1ch Qu\u00e9t trong In \u1ea5n"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Kh\u00e1ch h\u00e0ng c\u1ee7a b\u1ea1n c\u00f3 th\u1ef1c s\u1ef1 c\u00f3 th\u1ec3 qu\u00e9t m\u00e3 QR c\u1ee7a b\u1ea1n sau khi in kh\u00f4ng? M\u1ed9t m\u00e3 qu\u00e1 nh\u1ecf ho\u1eb7c m\u1edd s\u1ebd t\u1ea1o ra r\u00e0o c\u1ea3n k\u1ef9 thu\u1eadt cho ng\u01b0\u1eddi d\u00f9ng, d\u1eabn \u0111\u1ebfn b\u1ecf l\u1ee1 chuy\u1ec3n \u0111\u1ed5i v\u00e0 g\u00e2y kh\u00f3 ch\u1ecbu cho th\u01b0\u01a1ng hi\u1ec7u. H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p c\u00e1c y\u00eau c\u1ea7u thi\u1ebft y\u1ebfu v\u1ec1 k\u00edch th\u01b0\u1edbc, kho\u1ea3ng c\u00e1ch qu\u00e9t v\u00e0 \u0111\u1ed9 ph\u00e2n gi\u1ea3i \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00e0i li\u1ec7u in 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\" id=\"h-why-scanning-distance-dictates-qr-code-size\">T\u1ea1i sao kho\u1ea3ng c\u00e1ch qu\u00e9t quy\u1ebft \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc m\u00e3 QR<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed1i quan h\u1ec7 gi\u1eefa ng\u01b0\u1eddi xem v\u00e0 t\u00e0i li\u1ec7u in l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc m\u00e3 QR c\u1ea7n thi\u1ebft. \u0110\u1ec3 camera \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh c\u00f3 th\u1ec3 ph\u00e2n gi\u1ea3i th\u00e0nh c\u00f4ng c\u00e1c m\u00f4-\u0111un ri\u00eang l\u1ebb c\u1ee7a m\u00e3, m\u00e3 ph\u1ea3i chi\u1ebfm m\u1ed9t ph\u1ea7n \u0111\u1ee7 l\u1edbn trong tr\u01b0\u1eddng nh\u00ecn c\u1ee7a camera. Khi ng\u01b0\u1eddi d\u00f9ng di chuy\u1ec3n ra xa h\u01a1n, m\u00e3 s\u1ebd xu\u1ea5t hi\u1ec7n nh\u1ecf h\u01a1n \u0111\u1ed1i v\u1edbi c\u1ea3m bi\u1ebfn, cu\u1ed1i c\u00f9ng tr\u1edf th\u00e0nh m\u1ed9t h\u00ecnh vu\u00f4ng m\u1edd m\u00e0 ph\u1ea7n m\u1ec1m kh\u00f4ng th\u1ec3 gi\u1ea3i m\u00e3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 ng\u0103n ch\u1eb7n \u0111i\u1ec1u n\u00e0y, b\u1ea1n n\u00ean tu\u00e2n th\u1ee7 quy t\u1eafc k\u00edch th\u01b0\u1edbc 10:1 cho kho\u1ea3ng c\u00e1ch. H\u01b0\u1edbng d\u1eabn n\u00e0y g\u1ee3i \u00fd r\u1eb1ng m\u00e3 QR n\u00ean r\u1ed9ng \u00edt nh\u1ea5t 1 cm cho m\u1ed7i 10 cm kho\u1ea3ng c\u00e1ch gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00e3. V\u00ed d\u1ee5, m\u1ed9t t\u1edd r\u01a1i \u0111\u01b0\u1ee3c gi\u1eef \u1edf kho\u1ea3ng c\u00e1ch s\u1ea3i tay (kho\u1ea3ng 30 cm) y\u00eau c\u1ea7u m\u00e3 r\u1ed9ng \u00edt nh\u1ea5t 3 cm. Quy t\u1eafc n\u00e0y \u00e1p d\u1ee5ng hi\u1ec7u qu\u1ea3 cho qu\u1ea3ng c\u00e1o kh\u1ed5 l\u1edbn; n\u1ebfu b\u1ea1n mong \u0111\u1ee3i m\u1ecdi ng\u01b0\u1eddi qu\u00e9t m\u1ed9t bi\u1ec3u ng\u1eef t\u1eeb kho\u1ea3ng c\u00e1ch 50 feet, m\u00e3 QR n\u00ean r\u1ed9ng kho\u1ea3ng 5 feet \u0111\u1ec3 duy tr\u00ec kh\u1ea3 n\u0103ng hi\u1ec3n th\u1ecb.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/04\/qr-code-sizing-c8ffcf-04c99b3285b5.webp\" alt=\"Infographic quy t\u1eafc k\u00edch th\u01b0\u1edbc QR\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-recommended-minimum-dimensions-for-print\">K\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t cho b\u1ea3n in<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 quy t\u1eafc 10:1 h\u1eefu \u00edch cho c\u00e1c l\u1ea7n qu\u00e9t t\u1eeb xa, nh\u01b0ng c\u00f3 nh\u1eefng gi\u1edbi h\u1ea1n v\u1eadt l\u00fd tuy\u1ec7t \u0111\u1ed1i m\u00e0 b\u1ea1n ph\u1ea3i tu\u00e2n th\u1ee7 \u0111\u1ed1i v\u1edbi c\u00e1c t\u01b0\u01a1ng t\u00e1c \u1edf c\u1ef1 ly g\u1ea7n. H\u1ea7u h\u1ebft c\u00e1c \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh hi\u1ec7n \u0111\u1ea1i c\u00f3 th\u1ec3 qu\u00e9t \u0111\u00e1ng tin c\u1eady m\u1ed9t m\u00e3 c\u00f3 k\u00edch th\u01b0\u1edbc 2 x 2 cm (0.8 x 0.8 inch). K\u00edch th\u01b0\u1edbc n\u00e0y \u0111\u01b0\u1ee3c coi l\u00e0 ti\u00eau chu\u1ea9n an to\u00e0n cho c\u00e1c m\u1eb7t h\u00e0ng nh\u01b0 <a href=\"https:\/\/pageloot.com\/vi\/blog\/best-qr-code-sizes-for-business-cards\/\">m\u00e3 QR danh thi\u1ebfp<\/a> n\u01a1i kh\u00f4ng gian h\u1ea1n ch\u1ebf nh\u01b0ng vi\u1ec7c qu\u00e9t \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1eeb kho\u1ea3ng c\u00e1ch r\u1ea5t ng\u1eafn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c t\u00e0i li\u1ec7u ti\u1ebfp th\u1ecb c\u00f3 m\u1eadt \u0111\u1ed9 d\u1eef li\u1ec7u cao h\u01a1n \u2013 ch\u1eb3ng h\u1ea1n nh\u01b0 nh\u1eefng t\u00e0i li\u1ec7u ch\u1ee9a vCard ho\u1eb7c URL d\u00e0i \u2013 m\u1ed9t <a href=\"https:\/\/pageloot.com\/vi\/how-to\/qr-code-size-guide\/\">k\u00edch th\u01b0\u1edbc in t\u1ed1i thi\u1ec3u 3 x 3 cm<\/a> \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb. Vi\u1ec7c s\u1eed d\u1ee5ng k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n 10 mm th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c khuy\u1ebfn kh\u00edch, v\u00ec ngay c\u1ea3 c\u00e1c camera cao c\u1ea5p c\u0169ng kh\u00f3 l\u1ea5y n\u00e9t v\u00e0o c\u00e1c m\u00f4-\u0111un \u1edf t\u1ef7 l\u1ec7 \u0111\u00f3, \u0111\u1eb7c bi\u1ec7t trong \u0111i\u1ec1u ki\u1ec7n \u00e1nh s\u00e1ng kh\u00e1c nhau. N\u1ebfu b\u1ea1n \u0111ang g\u1eb7p kh\u00f3 kh\u0103n v\u1edbi m\u1ed9t m\u00e3 tr\u00f4ng qu\u00e1 d\u00e0y \u0111\u1eb7c \u1edf k\u00edch th\u01b0\u1edbc nh\u1ecf, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t <a href=\"https:\/\/pageloot.com\/vi\/qr-code-generator\/\">tr\u00ecnh t\u1ea1o m\u00e3 QR<\/a> \u0111\u1ec3 t\u1ea1o m\u00e3 \u0111\u1ed9ng, s\u1eed d\u1ee5ng URL ng\u1eafn h\u01a1n \u0111\u1ec3 gi\u1eef cho m\u1eabu \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 \u0111\u1ecdc.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-print-resolution-and-file-formats\">\u0110\u1ed9 ph\u00e2n gi\u1ea3i in v\u00e0 \u0111\u1ecbnh d\u1ea1ng t\u1ec7p<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 m\u1ed9t m\u00e3 QR c\u00f3 k\u00edch th\u01b0\u1edbc ho\u00e0n h\u1ea3o c\u0169ng s\u1ebd th\u1ea5t b\u1ea1i n\u1ebfu ch\u1ea5t l\u01b0\u1ee3ng in k\u00e9m. M\u00e1y qu\u00e9t y\u00eau c\u1ea7u c\u00e1c c\u1ea1nh s\u1eafc n\u00e9t, r\u00f5 r\u00e0ng \u0111\u1ec3 ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c m\u00f4-\u0111un m\u00e0u \u0111en v\u00e0 kho\u1ea3ng tr\u1eafng. \u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y, t\u1ec7p c\u1ee7a b\u1ea1n n\u00ean \u0111\u01b0\u1ee3c in \u1edf \u0111\u1ed9 ph\u00e2n gi\u1ea3i \u00edt nh\u1ea5t 300 DPI. H\u00ecnh \u1ea3nh c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u1ea5p th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n \u201ckh\u1eed r\u0103ng c\u01b0a\u201d ho\u1eb7c m\u1edd khi in, \u0111i\u1ec1u n\u00e0y g\u00e2y nh\u1ea7m l\u1eabn cho ph\u1ea7n m\u1ec1m qu\u00e9t v\u00e0 ng\u0103n n\u00f3 x\u00e1c \u0111\u1ecbnh l\u01b0\u1edbi d\u1eef li\u1ec7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ecbnh d\u1ea1ng t\u1ec7p c\u1ee7a b\u1ea1n c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft qu\u1ea3 cu\u1ed1i c\u00f9ng. C\u00e1c t\u1ec7p raster nh\u01b0 PNG ho\u1eb7c JPG c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c cho c\u00e1c nh\u00e3n nh\u1ecf, nh\u01b0ng ch\u00fang c\u00f3 th\u1ec3 m\u1ea5t ch\u1ea5t l\u01b0\u1ee3ng khi ph\u00f3ng to cho \u00e1p ph\u00edch. \u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c nhu c\u1ea7u chuy\u00ean nghi\u1ec7p, b\u1ea1n n\u00ean s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ecbnh d\u1ea1ng vector nh\u01b0 SVG, EPS ho\u1eb7c PDF. C\u00e1c \u0111\u1ecbnh d\u1ea1ng n\u00e0y cho ph\u00e9p b\u1ea1n thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc m\u00e3 v\u00f4 h\u1ea1n m\u00e0 kh\u00f4ng l\u00e0m m\u1ea5t \u0111\u1ed9 s\u1eafc n\u00e9t. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t <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 minh r\u1eb1ng thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt c\u1ea7n thi\u1ebft cho vi\u1ec7c qu\u00e9t \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-the-importance-of-quiet-zones-and-contrast\">T\u1ea7m quan tr\u1ecdng c\u1ee7a v\u00f9ng y\u00ean t\u0129nh v\u00e0 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cV\u00f9ng y\u00ean t\u0129nh\u201d l\u00e0 kho\u1ea3ng tr\u1ed1ng xung quanh m\u00e3 QR, t\u00e1ch n\u00f3 kh\u1ecfi c\u00e1c y\u1ebfu t\u1ed1 thi\u1ebft k\u1ebf, v\u0103n b\u1ea3n ho\u1eb7c \u0111\u1ed3 h\u1ecda kh\u00e1c. C\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf y\u00eau c\u1ea7u v\u00f9ng n\u00e0y ph\u1ea3i r\u1ed9ng \u00edt nh\u1ea5t b\u1ed1n m\u00f4-\u0111un \u1edf t\u1ea5t c\u1ea3 c\u00e1c c\u1ea1nh. N\u1ebfu kh\u00f4ng c\u00f3 v\u00f9ng \u0111\u1ec7m n\u00e0y, ph\u1ea7n m\u1ec1m qu\u00e9t c\u00f3 th\u1ec3 kh\u00f4ng nh\u1eadn ra m\u00e3 b\u1eaft \u0111\u1ea7u t\u1eeb \u0111\u00e2u v\u00e0 t\u00e1c ph\u1ea9m ngh\u1ec7 thu\u1eadt xung quanh k\u1ebft th\u00fac \u1edf \u0111\u00e2u. H\u00e3y coi \u0111\u00f3 l\u00e0 m\u1ed9t \u0111\u01b0\u1eddng vi\u1ec1n b\u1ea3o v\u1ec7 \u0111\u1ea3m b\u1ea3o m\u00e1y qu\u00e9t c\u00f3 th\u1ec3 t\u1eadp trung ho\u00e0n to\u00e0n v\u00e0o c\u00e1c m\u00f4-\u0111un d\u1eef li\u1ec7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed9 t\u01b0\u01a1ng ph\u1ea3n c\u0169ng quan tr\u1ecdng kh\u00f4ng k\u00e9m \u0111\u1ed1i v\u1edbi kh\u1ea3 n\u0103ng qu\u00e9t. M\u00e1y qu\u00e9t d\u1ef1a v\u00e0o 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\u1eb7c d\u00f9 m\u00e0u s\u1eafc t\u00f9y ch\u1ec9nh c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n s\u1ef1 ph\u00f9 h\u1ee3p v\u1edbi th\u01b0\u01a1ng hi\u1ec7u, l\u1ef1a ch\u1ecdn \u0111\u00e1ng tin c\u1eady nh\u1ea5t v\u1eabn l\u00e0 n\u1ec1n t\u1ed1i tr\u00ean n\u1ec1n s\u00e1ng. B\u1ea1n n\u00ean lu\u00f4n tu\u00e2n th\u1ee7 <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> b\u1eb1ng c\u00e1ch \u0111\u1eb7t m\u1ee5c ti\u00eau t\u1ef7 l\u1ec7 t\u01b0\u01a1ng ph\u1ea3n \u00edt nh\u1ea5t 4.5:1. Tr\u00e1nh c\u00e1c m\u00e0u \u0111\u1ea3o ng\u01b0\u1ee3c (m\u00e3 s\u00e1ng tr\u00ean n\u1ec1n t\u1ed1i), v\u00ec nhi\u1ec1u \u1ee9ng d\u1ee5ng qu\u00e9t c\u0169 ch\u1ec9 \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh \u0111\u1ec3 nh\u1eadn di\u1ec7n c\u00e1c m\u1eabu t\u1ed1i tr\u00ean b\u1ec1 m\u1eb7t s\u00e1ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-surface-and-material-considerations\">C\u00e1c y\u1ebfu t\u1ed1 v\u1ec1 b\u1ec1 m\u1eb7t v\u00e0 v\u1eadt li\u1ec7u<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1eadt li\u1ec7u b\u1ea1n ch\u1ecdn \u0111\u1ec3 in c\u00f3 th\u1ec3 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 c\u00e1ch m\u00e3 QR ho\u1ea1t \u0111\u1ed9ng. Gi\u1ea5y b\u00f3ng ho\u1eb7c b\u1ec1 m\u1eb7t k\u00ednh th\u01b0\u1eddng t\u1ea1o ra \u00e1nh s\u00e1ng ch\u00f3i, ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t \u201c\u0111i\u1ec3m m\u00f9\u201d m\u00e0u tr\u1eafng \u0111\u1ed1i v\u1edbi c\u1ea3m bi\u1ebfn m\u00e1y \u1ea3nh. N\u1ebfu b\u1ea1n ph\u1ea3i in tr\u00ean v\u1eadt li\u1ec7u ph\u1ea3n chi\u1ebfu, vi\u1ec7c t\u0103ng k\u00edch th\u01b0\u1edbc m\u00e3 \u0111\u00f4i khi c\u00f3 th\u1ec3 gi\u00fap m\u00e1y qu\u00e9t t\u00ecm \u0111\u1ee7 \u0111i\u1ec3m d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c \u0111\u1ec3 b\u00f9 \u0111\u1eafp cho s\u1ef1 ph\u1ea3n chi\u1ebfu. B\u1ec1 m\u1eb7t m\u1edd n\u00f3i chung l\u00e0 l\u1ef1a ch\u1ecdn \u0111\u00e1ng tin c\u1eady nh\u1ea5t \u0111\u1ec3 qu\u00e9t t\u1ed1c \u0111\u1ed9 cao.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1024\" height=\"807\" src=\"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/04\/qr-code-comparison-a8f509-400865b58098-e1777920661748.webp\" alt=\"So s\u00e1nh b\u1ec1 m\u1eb7t in QR\" class=\"wp-image-53280\" srcset=\"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/04\/qr-code-comparison-a8f509-400865b58098-e1777920661748.webp 1024w, https:\/\/pageloot.com\/wp-content\/uploads\/2026\/04\/qr-code-comparison-a8f509-400865b58098-e1777920661748-300x236.webp 300w, https:\/\/pageloot.com\/wp-content\/uploads\/2026\/04\/qr-code-comparison-a8f509-400865b58098-e1777920661748-768x605.webp 768w, https:\/\/pageloot.com\/wp-content\/uploads\/2026\/04\/qr-code-comparison-a8f509-400865b58098-e1777920661748-15x12.webp 15w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c v\u1eadt li\u1ec7u c\u00f3 k\u1ebft c\u1ea5u nh\u01b0 b\u00eca c\u1ee9ng ho\u1eb7c v\u1ea3i \u0111\u1eb7t ra nh\u1eefng th\u00e1ch th\u1ee9c kh\u00e1c nhau. B\u00eca c\u1ee9ng s\u00f3ng c\u00f3 c\u00e1c r\u00e3nh c\u00f3 th\u1ec3 l\u00e0m bi\u1ebfn d\u1ea1ng v\u1eadt l\u00fd c\u00e1c m\u00f4-\u0111un, trong khi c\u00e1c s\u1ee3i v\u1ea3i c\u00f3 th\u1ec3 \u201cph\u00e1 v\u1ee1\u201d c\u00e1c \u0111\u01b0\u1eddng n\u00e9t r\u00f5 r\u00e0ng c\u1ee7a m\u00e3. Khi b\u1ea1n <a href=\"https:\/\/pageloot.com\/vi\/how-to\/print-qr-code-on-label\/\">in m\u00e3 QR tr\u00ean nh\u00e3n<\/a> d\u00e0nh cho c\u00e1c b\u1ec1 m\u1eb7t c\u00f3 k\u1ebft c\u1ea5u, t\u1ed1t nh\u1ea5t l\u00e0 t\u0103ng k\u00edch th\u01b0\u1edbc t\u1eeb 25% \u0111\u1ebfn 50% \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c m\u00f4-\u0111un v\u1eabn r\u00f5 r\u00e0ng. Hi\u1ec3u r\u00f5 <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<\/a> cho ph\u00e9p b\u1ea1n \u0111i\u1ec1u ch\u1ec9nh thi\u1ebft k\u1ebf c\u1ee7a m\u00ecnh s\u1edbm trong qu\u00e1 tr\u00ecnh \u0111\u1ec3 tr\u00e1nh vi\u1ec7c in l\u1ea1i t\u1ed1n k\u00e9m.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u0110\u1ea3m b\u1ea3o chi\u1ebfn l\u01b0\u1ee3c in c\u1ee7a b\u1ea1n hi\u1ec7u qu\u1ea3<\/strong> \u0110\u1eebng \u0111\u1ec3 l\u1ed7i k\u00edch th\u01b0\u1edbc l\u00e0m h\u1ecfng chi\u1ebfn d\u1ecbch ti\u1ebfp th\u1ecb c\u1ee7a b\u1ea1n. S\u1eed d\u1ee5ng 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 t\u1ea1o m\u00e3 c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao, s\u1eb5n s\u00e0ng cho vector, \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho m\u1ecdi b\u1ec1 m\u1eb7t in.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-adapting-sizes-for-different-materials\">\u0110i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc cho c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau y\u00eau c\u1ea7u \u0111i\u1ec1u ch\u1ec9nh c\u1ee5 th\u1ec3 \u0111\u1ec3 duy tr\u00ec ch\u1ee9c n\u0103ng. Trong khi gi\u1ea5y l\u00e0 v\u1eadt li\u1ec7u d\u1ec5 s\u1eed d\u1ee5ng nh\u1ea5t, b\u00eca c\u1ee9ng v\u00e0 v\u1ea3i y\u00eau c\u1ea7u k\u00edch th\u01b0\u1edbc th\u1eadn tr\u1ecdng h\u01a1n \u0111\u1ec3 t\u00ednh \u0111\u1ebfn vi\u1ec7c m\u1ef1c b\u1ecb lem ho\u1eb7c c\u00e1c b\u1ea5t th\u01b0\u1eddng tr\u00ean b\u1ec1 m\u1eb7t.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>  Gi\u1ea5y: L\u00fd t\u01b0\u1edfng cho c\u00e1c k\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n (2 cm \u0111\u1ebfn 4 cm) v\u00e0 mang l\u1ea1i \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n t\u1ed1t nh\u1ea5t cho c\u00e1c t\u00e0i li\u1ec7u ti\u1ebfp th\u1ecb.<\/li>\n\n\n\n<li>  B\u00eca c\u1ee9ng: Y\u00eau c\u1ea7u k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u l\u1edbn h\u01a1n m\u1ed9t ch\u00fat (\u00edt nh\u1ea5t 15 mm) \u0111\u1ec3 kh\u1eafc ph\u1ee5c k\u1ebft c\u1ea5u c\u1ee7a v\u1eadt li\u1ec7u v\u00e0 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 m\u1ef1c.<\/li>\n\n\n\n<li>  V\u1ea3i: B\u1ec1 m\u1eb7t kh\u00f3 nh\u1ea5t, y\u00eau c\u1ea7u m\u00e3 c\u00f3 chi\u1ec1u r\u1ed9ng \u00edt nh\u1ea5t 20 mm v\u00e0 c\u00e1c m\u1eabu \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 ng\u0103n s\u1ee3i v\u1ea3i l\u00e0m bi\u1ebfn d\u1ea1ng c\u00e1c m\u00f4-\u0111un.<\/li>\n\n\n\n<li>  K\u00ednh v\u00e0 Kim lo\u1ea1i: C\u00e1c b\u1ec1 m\u1eb7t n\u00e0y c\u00f3 \u0111\u1ed9 ph\u1ea3n chi\u1ebfu cao; b\u1ea1n n\u00ean \u0111\u1eb7t m\u00e3 \u1edf khu v\u1ef1c b\u1eb1ng ph\u1eb3ng v\u00e0 c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng l\u1edbp ph\u1ee7 vinyl m\u1edd \u0111\u1ec3 gi\u1ea3m ch\u00f3i.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u00f9 h\u1ee3p v\u1edbi <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> \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u1ea7u n\u1ed1i k\u1ef9 thu\u1eadt s\u1ed1 c\u1ee7a b\u1ea1n v\u1eabn ho\u1ea1t \u0111\u1ed9ng b\u1ea5t k\u1ec3 ph\u01b0\u01a1ng ti\u1ec7n n\u00e0o. Lu\u00f4n th\u1ef1c hi\u1ec7n in th\u1eed tr\u00ean v\u1eadt li\u1ec7u th\u1ef1c t\u1ebf v\u00e0 xem d\u01b0\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u00e1nh s\u00e1ng kh\u00e1c nhau tr\u01b0\u1edbc khi ti\u1ebfn h\u00e0nh s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-frequently-asked-questions\">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-cfa6cf5ba717\"><strong class=\"schema-faq-question\">K\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u tuy\u1ec7t \u0111\u1ed1i m\u00e0 m\u1ed9t m\u00e3 QR c\u00f3 th\u1ec3 c\u00f3 \u0111\u1ec3 in l\u00e0 bao nhi\u00eau?<\/strong> <p class=\"schema-faq-answer\">\u0110\u1ec3 qu\u00e9t \u0111\u00e1ng tin c\u1eady \u1edf kho\u1ea3ng c\u00e1ch s\u1ea3i tay, 2 x 2 cm (0.8 x 0.8 inch) l\u00e0 k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u ti\u00eau chu\u1ea9n. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p c\u1ef1c \u0111oan \u0111\u1ed1i v\u1edbi danh thi\u1ebfp, b\u1ea1n c\u00f3 th\u1ec3 gi\u1ea3m xu\u1ed1ng 10 mm, nh\u01b0ng ch\u1ec9 khi d\u1eef li\u1ec7u r\u1ea5t \u0111\u01a1n gi\u1ea3n v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng in cao.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-21ff47737cf1\"><strong class=\"schema-faq-question\">Quy t\u1eafc kho\u1ea3ng c\u00e1ch qu\u00e9t 10:1 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/strong> <p class=\"schema-faq-answer\">B\u1ea1n n\u00ean t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc m\u00e3 QR c\u1ee7a m\u00ecnh b\u1eb1ng c\u00e1ch chia kho\u1ea3ng c\u00e1ch qu\u00e9t d\u1ef1 ki\u1ebfn cho m\u01b0\u1eddi. N\u1ebfu \u00e1p ph\u00edch c\u1ee7a b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c qu\u00e9t t\u1eeb kho\u1ea3ng c\u00e1ch 2 m\u00e9t (200 cm), m\u00e3 QR n\u00ean c\u00f3 chi\u1ec1u r\u1ed9ng \u00edt nh\u1ea5t 20 cm.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-182e010a65d2\"><strong class=\"schema-faq-question\">T\u1ea1i sao m\u00e3 QR c\u1ee7a t\u00f4i tr\u00f4ng m\u1edd khi t\u00f4i ph\u00f3ng to ch\u00fang cho c\u00e1c \u00e1p ph\u00edch l\u1edbn?<\/strong> <p class=\"schema-faq-answer\">\u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng x\u1ea3y ra khi s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ecbnh d\u1ea1ng raster nh\u01b0 PNG ho\u1eb7c JPG. \u0110\u1ed1i v\u1edbi in kh\u1ed5 l\u1edbn, h\u00e3y lu\u00f4n xu\u1ea5t m\u00e3 QR c\u1ee7a b\u1ea1n \u1edf \u0111\u1ecbnh d\u1ea1ng vector nh\u01b0 SVG ho\u1eb7c EPS, gi\u00fap duy tr\u00ec \u0111\u1ed9 s\u1eafc n\u00e9t ho\u00e0n h\u1ea3o \u1edf b\u1ea5t k\u1ef3 k\u00edch th\u01b0\u1edbc n\u00e0o.<\/p> <\/div> <\/div>","protected":false},"excerpt":{"rendered":"<p>\u0110\u1ea3m b\u1ea3o qu\u00e9t m\u00e3 QR \u0111\u00e1ng tin c\u1eady. Tu\u00e2n th\u1ee7 quy t\u1eafc kho\u1ea3ng c\u00e1ch qu\u00e9t 10:1, k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u 2\u00d72 cm v\u00e0 \u0111\u1ed9 ph\u00e2n gi\u1ea3i 300 DPI \u0111\u1ec3 c\u00f3 k\u1ebft qu\u1ea3 in chuy\u00ean nghi\u1ec7p m\u1ecdi l\u00fac.<\/p>","protected":false},"author":17,"featured_media":53196,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-1434","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-how-to"],"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 Size and Scan Distance in Print<\/title>\n<meta name=\"description\" content=\"Ensure reliable QR code scanning. Follow the 10:1 scan distance rule, 2x2 cm minimum sizing, and 300 DPI resolution for professional print results every time.\" \/>\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\/how-to\/qr-code-size-guide\/\" \/>\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 Size and Scan Distance in Print\" \/>\n<meta property=\"og:description\" content=\"Ensure reliable QR code scanning. Follow the 10:1 scan distance rule, 2x2 cm minimum sizing, and 300 DPI resolution for professional print results every time.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pageloot.com\/vi\/how-to\/qr-code-size-guide\/\" \/>\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=\"2019-04-16T19:50:21+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-04T18:53:01+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/04\/hands-holding-smartphone-0dfddd-c7fe7cd6d6b8.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=\"6 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/\"},\"author\":{\"name\":\"Siim T\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#\\\/schema\\\/person\\\/fa28992c2e52546f0812833bac852dfe\"},\"headline\":\"Guidelines for QR Code Size and Scan Distance in Print\",\"datePublished\":\"2019-04-16T19:50:21+00:00\",\"dateModified\":\"2026-05-04T18:53:01+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/\"},\"wordCount\":1199,\"publisher\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/hands-holding-smartphone-0dfddd-c7fe7cd6d6b8.webp\",\"articleSection\":[\"Guides\"],\"inLanguage\":\"vi\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/\",\"url\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/\",\"name\":\"Guidelines for QR Code Size and Scan Distance in Print\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/hands-holding-smartphone-0dfddd-c7fe7cd6d6b8.webp\",\"datePublished\":\"2019-04-16T19:50:21+00:00\",\"dateModified\":\"2026-05-04T18:53:01+00:00\",\"description\":\"Ensure reliable QR code scanning. Follow the 10:1 scan distance rule, 2x2 cm minimum sizing, and 300 DPI resolution for professional print results every time.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/#breadcrumb\"},\"mainEntity\":[{\"@id\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/#faq-question-cfa6cf5ba717\"},{\"@id\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/#faq-question-21ff47737cf1\"},{\"@id\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/#faq-question-182e010a65d2\"}],\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/#primaryimage\",\"url\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/hands-holding-smartphone-0dfddd-c7fe7cd6d6b8.webp\",\"contentUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/hands-holding-smartphone-0dfddd-c7fe7cd6d6b8.webp\",\"width\":1024,\"height\":1024,\"caption\":\"Scanning printed QR code\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/pageloot.com\\\/es\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Guides\",\"item\":\"https:\\\/\\\/pageloot.com\\\/es\\\/c\\\/how-to\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Guidelines for QR Code Size and Scan Distance in Print\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#website\",\"url\":\"https:\\\/\\\/pageloot.com\\\/es\\\/\",\"name\":\"Pageloot\",\"description\":\"Create Free QR Codes Online\",\"publisher\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/pageloot.com\\\/es\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"vi\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#organization\",\"name\":\"Pageloot\",\"url\":\"https:\\\/\\\/pageloot.com\\\/es\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2020\\\/03\\\/Pageloot-QR-Code-Generator-Scanner-Tools-Online.svg\",\"contentUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2020\\\/03\\\/Pageloot-QR-Code-Generator-Scanner-Tools-Online.svg\",\"width\":1,\"height\":1,\"caption\":\"Pageloot\"},\"image\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/pageloot\\\/\",\"https:\\\/\\\/x.com\\\/getpageloot\",\"https:\\\/\\\/www.instagram.com\\\/getpageloot\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/pageloot\\\/\",\"http:\\\/\\\/pinterest.com\\\/pageloot\",\"https:\\\/\\\/www.youtube.com\\\/pageloot\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#\\\/schema\\\/person\\\/fa28992c2e52546f0812833bac852dfe\",\"name\":\"Siim T\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/litespeed\\\/avatar\\\/b08b5ea4331bae7b2040ada99100c9df.jpg?ver=1781639827\",\"url\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/litespeed\\\/avatar\\\/b08b5ea4331bae7b2040ada99100c9df.jpg?ver=1781639827\",\"contentUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/litespeed\\\/avatar\\\/b08b5ea4331bae7b2040ada99100c9df.jpg?ver=1781639827\",\"caption\":\"Siim T\"},\"description\":\"Siim Tiigim\u00e4gi is a part of the innovative QR code generator services at Pageloot. With a profound expertise spanning over 5 years solely on QR codes, Siim has become a subject matter expert in the field. He makes significant strides in leveraging QR technology to simplify and augment digital interactions. His journey didn\u2019t just start here. Siim has an extensive digital background with over 10 years of robust experience in the Software as a Service (SaaS) sector, a testament to his deep-seated knowledge in digital solutions.\",\"sameAs\":[\"https:\\\/\\\/www.linkedin.com\\\/in\\\/siim-tiigimagi\\\/\"]},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/#faq-question-cfa6cf5ba717\",\"position\":1,\"url\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/#faq-question-cfa6cf5ba717\",\"name\":\"What is the absolute minimum size a QR code can be for print?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"For reliable scanning at arm's length, 2 x 2 cm (0.8 x 0.8 inches) is the standard minimum. In extreme cases for business cards, you can go down to 10 mm, but only if the data is very simple and the print quality is high.\",\"inLanguage\":\"vi\"},\"inLanguage\":\"vi\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/#faq-question-21ff47737cf1\",\"position\":2,\"url\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/#faq-question-21ff47737cf1\",\"name\":\"How does the 10:1 scanning distance rule work?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"You should calculate the size of your QR code by dividing the expected scanning distance by ten. If your poster will be scanned from 2 meters (200 cm) away, the QR code should be at least 20 cm wide.\",\"inLanguage\":\"vi\"},\"inLanguage\":\"vi\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/#faq-question-182e010a65d2\",\"position\":3,\"url\":\"https:\\\/\\\/pageloot.com\\\/how-to\\\/qr-code-size-guide\\\/#faq-question-182e010a65d2\",\"name\":\"Why do my QR codes look blurry when I scale them for large posters?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This usually happens when using raster formats like PNG or JPG. For large-format printing, always export your QR code in a vector format like SVG or EPS, which maintains perfect sharpness at any size.\",\"inLanguage\":\"vi\"},\"inLanguage\":\"vi\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"H\u01b0\u1edbng d\u1eabn v\u1ec1 K\u00edch th\u01b0\u1edbc M\u00e3 QR v\u00e0 Kho\u1ea3ng c\u00e1ch Qu\u00e9t trong In \u1ea5n","description":"\u0110\u1ea3m b\u1ea3o qu\u00e9t m\u00e3 QR \u0111\u00e1ng tin c\u1eady. Tu\u00e2n th\u1ee7 quy t\u1eafc kho\u1ea3ng c\u00e1ch qu\u00e9t 10:1, k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u 2x2 cm v\u00e0 \u0111\u1ed9 ph\u00e2n gi\u1ea3i 300 DPI \u0111\u1ec3 c\u00f3 k\u1ebft qu\u1ea3 in chuy\u00ean nghi\u1ec7p m\u1ecdi l\u00fac.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/pageloot.com\/vi\/how-to\/qr-code-size-guide\/","og_locale":"vi_VN","og_type":"article","og_title":"Guidelines for QR Code Size and Scan Distance in Print","og_description":"Ensure reliable QR code scanning. Follow the 10:1 scan distance rule, 2x2 cm minimum sizing, and 300 DPI resolution for professional print results every time.","og_url":"https:\/\/pageloot.com\/vi\/how-to\/qr-code-size-guide\/","og_site_name":"Pageloot","article_publisher":"https:\/\/www.facebook.com\/pageloot\/","article_published_time":"2019-04-16T19:50:21+00:00","article_modified_time":"2026-05-04T18:53:01+00:00","og_image":[{"width":1024,"height":1024,"url":"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/04\/hands-holding-smartphone-0dfddd-c7fe7cd6d6b8.webp","type":"image\/webp"}],"author":"Siim T","twitter_card":"summary_large_image","twitter_creator":"@getpageloot","twitter_site":"@getpageloot","twitter_misc":{"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi":"Siim T","\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc":"6 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/#article","isPartOf":{"@id":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/"},"author":{"name":"Siim T","@id":"https:\/\/pageloot.com\/es\/#\/schema\/person\/fa28992c2e52546f0812833bac852dfe"},"headline":"Guidelines for QR Code Size and Scan Distance in Print","datePublished":"2019-04-16T19:50:21+00:00","dateModified":"2026-05-04T18:53:01+00:00","mainEntityOfPage":{"@id":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/"},"wordCount":1199,"publisher":{"@id":"https:\/\/pageloot.com\/es\/#organization"},"image":{"@id":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/#primaryimage"},"thumbnailUrl":"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/04\/hands-holding-smartphone-0dfddd-c7fe7cd6d6b8.webp","articleSection":["Guides"],"inLanguage":"vi"},{"@type":["WebPage","FAQPage"],"@id":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/","url":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/","name":"H\u01b0\u1edbng d\u1eabn v\u1ec1 K\u00edch th\u01b0\u1edbc M\u00e3 QR v\u00e0 Kho\u1ea3ng c\u00e1ch Qu\u00e9t trong In \u1ea5n","isPartOf":{"@id":"https:\/\/pageloot.com\/es\/#website"},"primaryImageOfPage":{"@id":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/#primaryimage"},"image":{"@id":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/#primaryimage"},"thumbnailUrl":"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/04\/hands-holding-smartphone-0dfddd-c7fe7cd6d6b8.webp","datePublished":"2019-04-16T19:50:21+00:00","dateModified":"2026-05-04T18:53:01+00:00","description":"\u0110\u1ea3m b\u1ea3o qu\u00e9t m\u00e3 QR \u0111\u00e1ng tin c\u1eady. Tu\u00e2n th\u1ee7 quy t\u1eafc kho\u1ea3ng c\u00e1ch qu\u00e9t 10:1, k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u 2x2 cm v\u00e0 \u0111\u1ed9 ph\u00e2n gi\u1ea3i 300 DPI \u0111\u1ec3 c\u00f3 k\u1ebft qu\u1ea3 in chuy\u00ean nghi\u1ec7p m\u1ecdi l\u00fac.","breadcrumb":{"@id":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/#breadcrumb"},"mainEntity":[{"@id":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/#faq-question-cfa6cf5ba717"},{"@id":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/#faq-question-21ff47737cf1"},{"@id":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/#faq-question-182e010a65d2"}],"inLanguage":"vi","potentialAction":[{"@type":"ReadAction","target":["https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/"]}]},{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/#primaryimage","url":"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/04\/hands-holding-smartphone-0dfddd-c7fe7cd6d6b8.webp","contentUrl":"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/04\/hands-holding-smartphone-0dfddd-c7fe7cd6d6b8.webp","width":1024,"height":1024,"caption":"Scanning printed QR code"},{"@type":"BreadcrumbList","@id":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/pageloot.com\/es\/"},{"@type":"ListItem","position":2,"name":"Guides","item":"https:\/\/pageloot.com\/es\/c\/how-to\/"},{"@type":"ListItem","position":3,"name":"Guidelines for QR Code Size and Scan Distance in Print"}]},{"@type":"WebSite","@id":"https:\/\/pageloot.com\/es\/#website","url":"https:\/\/pageloot.com\/es\/","name":"Pageloot","description":"T\u1ea1o m\u00e3 QR mi\u1ec5n ph\u00ed tr\u1ef1c tuy\u1ebfn","publisher":{"@id":"https:\/\/pageloot.com\/es\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/pageloot.com\/es\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"vi"},{"@type":"Organization","@id":"https:\/\/pageloot.com\/es\/#organization","name":"Pageloot","url":"https:\/\/pageloot.com\/es\/","logo":{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/pageloot.com\/es\/#\/schema\/logo\/image\/","url":"https:\/\/pageloot.com\/wp-content\/uploads\/2020\/03\/Pageloot-QR-Code-Generator-Scanner-Tools-Online.svg","contentUrl":"https:\/\/pageloot.com\/wp-content\/uploads\/2020\/03\/Pageloot-QR-Code-Generator-Scanner-Tools-Online.svg","width":1,"height":1,"caption":"Pageloot"},"image":{"@id":"https:\/\/pageloot.com\/es\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/pageloot\/","https:\/\/x.com\/getpageloot","https:\/\/www.instagram.com\/getpageloot\/","https:\/\/www.linkedin.com\/company\/pageloot\/","http:\/\/pinterest.com\/pageloot","https:\/\/www.youtube.com\/pageloot"]},{"@type":"Person","@id":"https:\/\/pageloot.com\/es\/#\/schema\/person\/fa28992c2e52546f0812833bac852dfe","name":"Siim T","image":{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/pageloot.com\/wp-content\/litespeed\/avatar\/b08b5ea4331bae7b2040ada99100c9df.jpg?ver=1781639827","url":"https:\/\/pageloot.com\/wp-content\/litespeed\/avatar\/b08b5ea4331bae7b2040ada99100c9df.jpg?ver=1781639827","contentUrl":"https:\/\/pageloot.com\/wp-content\/litespeed\/avatar\/b08b5ea4331bae7b2040ada99100c9df.jpg?ver=1781639827","caption":"Siim T"},"description":"Siim Tiigim\u00e4gi l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a d\u1ecbch v\u1ee5 t\u1ea1o m\u00e3 QR s\u00e1ng t\u1ea1o t\u1ea1i Pageloot. V\u1edbi chuy\u00ean m\u00f4n s\u00e2u s\u1eafc k\u00e9o d\u00e0i h\u01a1n 5 n\u0103m ch\u1ec9 v\u1ec1 m\u00e3 QR, Siim \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t chuy\u00ean gia v\u1ec1 ch\u1ee7 \u0111\u1ec1 n\u00e0y trong l\u0129nh v\u1ef1c n\u00e0y. Anh \u1ea5y \u0111\u00e3 c\u00f3 nh\u1eefng b\u01b0\u1edbc ti\u1ebfn \u0111\u00e1ng k\u1ec3 trong vi\u1ec7c t\u1eadn d\u1ee5ng c\u00f4ng ngh\u1ec7 QR \u0111\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a v\u00e0 t\u0103ng c\u01b0\u1eddng c\u00e1c t\u01b0\u01a1ng t\u00e1c k\u1ef9 thu\u1eadt s\u1ed1. Cu\u1ed9c h\u00e0nh tr\u00ecnh c\u1ee7a anh kh\u00f4ng ch\u1ec9 b\u1eaft \u0111\u1ea7u \u1edf \u0111\u00e2y. 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\/how-to\/qr-code-size-guide\/#faq-question-cfa6cf5ba717","position":1,"url":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/#faq-question-cfa6cf5ba717","name":"K\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u tuy\u1ec7t \u0111\u1ed1i m\u00e0 m\u1ed9t m\u00e3 QR c\u00f3 th\u1ec3 c\u00f3 \u0111\u1ec3 in l\u00e0 bao nhi\u00eau?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"For reliable scanning at arm's length, 2 x 2 cm (0.8 x 0.8 inches) is the standard minimum. In extreme cases for business cards, you can go down to 10 mm, but only if the data is very simple and the print quality is high.","inLanguage":"vi"},"inLanguage":"vi"},{"@type":"Question","@id":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/#faq-question-21ff47737cf1","position":2,"url":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/#faq-question-21ff47737cf1","name":"Quy t\u1eafc kho\u1ea3ng c\u00e1ch qu\u00e9t 10:1 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"You should calculate the size of your QR code by dividing the expected scanning distance by ten. If your poster will be scanned from 2 meters (200 cm) away, the QR code should be at least 20 cm wide.","inLanguage":"vi"},"inLanguage":"vi"},{"@type":"Question","@id":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/#faq-question-182e010a65d2","position":3,"url":"https:\/\/pageloot.com\/how-to\/qr-code-size-guide\/#faq-question-182e010a65d2","name":"T\u1ea1i sao m\u00e3 QR c\u1ee7a t\u00f4i tr\u00f4ng m\u1edd khi t\u00f4i ph\u00f3ng to ch\u00fang cho c\u00e1c \u00e1p ph\u00edch l\u1edbn?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"This usually happens when using raster formats like PNG or JPG. For large-format printing, always export your QR code in a vector format like SVG or EPS, which maintains perfect sharpness at any size.","inLanguage":"vi"},"inLanguage":"vi"}]}},"_links":{"self":[{"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/1434","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=1434"}],"version-history":[{"count":4,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/1434\/revisions"}],"predecessor-version":[{"id":53911,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/1434\/revisions\/53911"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/media\/53196"}],"wp:attachment":[{"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/media?parent=1434"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/categories?post=1434"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/tags?post=1434"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}