{"id":48240,"date":"2025-12-18T15:41:57","date_gmt":"2025-12-18T15:41:57","guid":{"rendered":"https:\/\/staging.pageloot.com\/uncategorized\/qr-code-placement-mistakes\/"},"modified":"2026-04-22T13:14:09","modified_gmt":"2026-04-22T13:14:09","slug":"qr-code-placement-mistakes","status":"publish","type":"post","link":"https:\/\/pageloot.com\/vi\/blog\/qr-code-placement-mistakes\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn \u0111\u1eb7t m\u00e3 QR v\u00e0 kh\u1ea3 n\u0103ng qu\u00e9t"},"content":{"rendered":"<p class=\"wp-block-paragraph\">T\u1ea1i sao m\u00e3 QR c\u1ee7a b\u1ea1n b\u1ecb kh\u00e1ch h\u00e0ng b\u1ecf qua d\u00f9 \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf nh\u1eefng khu v\u1ef1c c\u00f3 l\u01b0\u1ee3ng ng\u01b0\u1eddi qua l\u1ea1i cao? Khi m\u1ed9t m\u00e3 kh\u00f3 qu\u00e9t ho\u1eb7c \u0111\u01b0\u1ee3c \u0111\u1eb7t sai v\u1ecb tr\u00ed, ng\u01b0\u1eddi d\u00f9ng nhanh ch\u00f3ng m\u1ea5t h\u1ee9ng th\u00fa v\u00e0 ROI ti\u1ebfp th\u1ecb c\u1ee7a b\u1ea1n b\u1ecb \u1ea3nh h\u01b0\u1edfng. H\u01b0\u1edbng d\u1eabn n\u00e0y gi\u1ea3i th\u00edch c\u00e1ch t\u1ed1i \u01b0u h\u00f3a v\u1ecb tr\u00ed v\u00e0 thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ecdi m\u00e3 \u0111\u1ec1u cung c\u1ea5p k\u1ebft n\u1ed1i k\u1ef9 thu\u1eadt s\u1ed1 li\u1ec1n m\u1ea1ch.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Thi\u1ebft l\u1eadp k\u00edch th\u01b0\u1edbc v\u00e0 kho\u1ea3ng c\u00e1ch qu\u00e9t ph\u00f9 h\u1ee3p<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L\u00fd do ph\u1ed5 bi\u1ebfn nh\u1ea5t khi\u1ebfn vi\u1ec7c qu\u00e9t th\u1ea5t b\u1ea1i l\u00e0 m\u00e3 qu\u00e1 nh\u1ecf so v\u1edbi kho\u1ea3ng c\u00e1ch nh\u00ecn. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng m\u01b0\u1ee3t m\u00e0, b\u1ea1n n\u00ean tu\u00e2n th\u1ee7 t\u1ef7 l\u1ec7 10:1, ngh\u0129a l\u00e0 c\u1ee9 m\u1ed7i 10 inch kho\u1ea3ng c\u00e1ch gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00e3, m\u00e3 QR ph\u1ea3i r\u1ed9ng \u00edt nh\u1ea5t 1 inch. \u0110\u1ed1i v\u1edbi c\u00e1c v\u1eadt ph\u1ea9m c\u1eadn c\u1ea3nh nh\u01b0 danh thi\u1ebfp ho\u1eb7c t\u00e0i li\u1ec7u qu\u1ea3ng c\u00e1o, <a href=\"https:\/\/pageloot.com\/vi\/how-to\/qr-code-size-guide\/\">k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd t\u1ed1i thi\u1ec3u<\/a> ph\u1ea3i c\u00f3 k\u00edch th\u01b0\u1edbc \u00edt nh\u1ea5t 0,8 x 0,8 inch (2 x 2 cm) \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o camera \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh hi\u1ec7n \u0111\u1ea1i c\u00f3 th\u1ec3 l\u1ea5y n\u00e9t ch\u00ednh x\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu m\u00e3 c\u1ee7a b\u1ea1n ch\u1ee9a m\u1ed9t l\u01b0\u1ee3ng l\u1edbn d\u1eef li\u1ec7u, ch\u1eb3ng h\u1ea1n nh\u01b0 vCard v\u1edbi nhi\u1ec1u tr\u01b0\u1eddng li\u00ean h\u1ec7, c\u00e1c m\u00f4-\u0111un ri\u00eang l\u1ebb \u2013 c\u00e1c \u00f4 vu\u00f4ng nh\u1ecf trong l\u01b0\u1edbi \u2013 s\u1ebd tr\u1edf n\u00ean nh\u1ecf h\u01a1n v\u00e0 d\u00e0y \u0111\u1eb7c h\u01a1n. M\u1eadt \u0111\u1ed9 n\u00e0y khi\u1ebfn m\u00e1y qu\u00e9t kh\u00f3 ph\u00e2n gi\u1ea3i m\u1eabu. \u0110\u1ec3 kh\u1eafc ph\u1ee5c \u0111i\u1ec1u n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng <a href=\"https:\/\/pageloot.com\/vi\/qr-code-marketing\/static-vs-dynamic-qr-codes\/\">m\u00e3 QR \u0111\u1ed9ng<\/a> \u0111\u1ec3 gi\u1eef cho thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n g\u1ecdn g\u00e0ng. V\u00ec m\u00e3 \u0111\u1ed9ng ch\u1ec9 nh\u00fang m\u1ed9t URL chuy\u1ec3n h\u01b0\u1edbng ng\u1eafn thay v\u00ec to\u00e0n b\u1ed9 d\u1eef li\u1ec7u, n\u00ean m\u1eabu v\u1eabn \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 qu\u00e9t ngay c\u1ea3 \u1edf k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n v\u00e0 l\u1ef1a ch\u1ecdn m\u00e0u s\u1eafc quy\u1ebft \u0111\u1ecbnh kh\u1ea3 n\u0103ng \u0111\u1ecdc<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00e1y qu\u00e9t nh\u1eadn di\u1ec7n m\u00e3 QR b\u1eb1ng c\u00e1ch ph\u00e1t hi\u1ec7n s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 gi\u1eefa c\u00e1c m\u00f4-\u0111un t\u1ed1i v\u00e0 n\u1ec1n s\u00e1ng. N\u1ebfu \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n qu\u00e1 th\u1ea5p, m\u00e1y qu\u00e9t kh\u00f4ng th\u1ec3 \u201cnh\u00ecn th\u1ea5y\u201d m\u1eabu, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e1ch m\u1ed9t ng\u01b0\u1eddi c\u00f3 th\u1ec3 kh\u00f3 \u0111\u1ecdc v\u0103n b\u1ea3n m\u00e0u x\u00e1m nh\u1ea1t tr\u00ean trang tr\u1eafng. Lu\u00f4n \u01b0u ti\u00ean n\u1ec1n t\u1ed1i tr\u00ean n\u1ec1n s\u00e1ng, h\u01b0\u1edbng t\u1edbi t\u1ef7 l\u1ec7 t\u01b0\u01a1ng ph\u1ea3n t\u1ed1i thi\u1ec3u l\u00e0 4,5:1 cho c\u00e1c m\u00e3 nh\u1ecf. M\u1eb7c d\u00f9 \u0111en tr\u00ean tr\u1eafng l\u00e0 ti\u00eau chu\u1ea9n v\u00e0ng v\u1ec1 \u0111\u1ed9 tin c\u1eady, nh\u01b0ng c\u00e1c k\u1ebft h\u1ee3p c\u00f3 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n cao kh\u00e1c nh\u01b0 xanh navy tr\u00ean m\u00e0u be c\u0169ng ho\u1ea1t \u0111\u1ed9ng t\u1ed1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ngo\u00e0i b\u1ea3n th\u00e2n m\u00e0u s\u1eafc, vi\u1ec7c \u00e1p d\u1ee5ng c\u00e1c m\u00e0u \u0111\u00f3 c\u0169ng quan tr\u1ecdng. S\u1eed d\u1ee5ng b\u00f3ng ho\u1eb7c gradient trong m\u00e3 c\u00f3 th\u1ec3 l\u00e0m nhi\u1ec5u logic ph\u00e1t hi\u1ec7n c\u1ea1nh c\u1ee7a m\u00e1y qu\u00e9t b\u1eb1ng c\u00e1ch t\u1ea1o ra c\u00e1c t\u00f4ng m\u00e0u trung gian m\u00e0 ph\u1ea7n m\u1ec1m kh\u00f4ng th\u1ec3 ph\u00e2n lo\u1ea1i l\u00e0 \u201cs\u00e1ng\u201d ho\u1eb7c \u201ct\u1ed1i\u201d. \u0110\u1ec3 duy tr\u00ec <a href=\"https:\/\/pageloot.com\/vi\/blog\/best-practices-for-qr-code-readability\/\">kh\u1ea3 n\u0103ng \u0111\u1ecdc cao<\/a>, h\u00e3y s\u1eed d\u1ee5ng m\u00e0u s\u1eafc \u0111\u1ed3ng nh\u1ea5t. Vi\u1ec7c ki\u1ec3m tra <a href=\"https:\/\/pageloot.com\/vi\/blog\/qr-code-color-contrast-best-practices\/\">\u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n v\u00e0 l\u1ef1a ch\u1ecdn m\u00e0u s\u1eafc c\u1ee7a b\u1ea1n<\/a> trong \u0111i\u1ec1u ki\u1ec7n \u00e1nh s\u00e1ng th\u1ef1c t\u1ebf khi tri\u1ec3n khai l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft, v\u00ec b\u00f3ng t\u1ed1i gay g\u1eaft ho\u1eb7c m\u00f4i tr\u01b0\u1eddng thi\u1ebfu s\u00e1ng c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n nh\u00ecn th\u1ea5y c\u1ee7a m\u1ed9t m\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf t\u1ed1t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Tr\u00e1nh c\u00e1c l\u1ed7i thi\u1ebft k\u1ebf v\u00e0 k\u1ef9 thu\u1eadt ph\u1ed5 bi\u1ebfn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 m\u1ed9t m\u00e3 c\u00f3 k\u00edch th\u01b0\u1edbc ho\u00e0n h\u1ea3o c\u0169ng c\u00f3 th\u1ec3 th\u1ea5t b\u1ea1i n\u1ebfu thi\u1ebft k\u1ebf can thi\u1ec7p v\u00e0o c\u00e1c y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt c\u1ee7a ti\u00eau chu\u1ea9n QR. M\u1ed9t trong nh\u1eefng sai s\u00f3t ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 x\u00e2m ph\u1ea1m v\u00f9ng y\u00ean t\u0129nh (quiet zone), l\u00e0 \u0111\u01b0\u1eddng vi\u1ec1n tr\u1ed1ng bao quanh m\u00e3. Theo <a href=\"https:\/\/pageloot.com\/vi\/blog\/qr-code-usability-best-practices\/\">ti\u00eau chu\u1ea9n ISO\/IEC 18004<\/a>, 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. V\u00f9ng \u0111\u1ec7m n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t khung, cho m\u00e1y qu\u00e9t bi\u1ebft ch\u00ednh x\u00e1c d\u1eef li\u1ec7u b\u1eaft \u0111\u1ea7u v\u00e0 k\u1ebft th\u00fac \u1edf \u0111\u00e2u.<\/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-aspect-ratio-1-1-white-background-with-black-text-and-blue-8181-038ce0b4c3ed.webp\" alt=\"Danh s\u00e1ch ki\u1ec3m tra qu\u00e9t m\u00e3 QR\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 th\u00eam logo l\u00e0 m\u1ed9t c\u00e1ch tuy\u1ec7t v\u1eddi \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng nh\u1eadn di\u1ec7n th\u01b0\u01a1ng hi\u1ec7u, nh\u01b0ng n\u00f3 kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c che ph\u1ee7 qu\u00e1 25% \u0111\u1ebfn 30% di\u1ec7n t\u00edch m\u00e3. L\u1ea1m d\u1ee5ng logo ho\u1eb7c \u0111\u1eb7t ch\u00fang l\u00ean c\u00e1c m\u1eabu \u0111\u1ecbnh v\u1ecb quan tr\u1ecdng c\u00f3 th\u1ec3 l\u00e0m qu\u00e1 t\u1ea3i kh\u1ea3 n\u0103ng s\u1eeda l\u1ed7i. T\u01b0\u01a1ng t\u1ef1, n\u1ec1n b\u1eadn r\u1ed9n c\u00f3 th\u1ec3 g\u00e2y ra v\u1ea5n \u0111\u1ec1; \u0111\u1eb7t m\u00e3 QR tr\u1ef1c ti\u1ebfp l\u00ean \u1ea3nh ho\u1eb7c m\u1eabu c\u00f3 k\u1ebft c\u1ea5u c\u00f3 th\u1ec3 khi\u1ebfn m\u00e1y qu\u00e9t hi\u1ec3u nh\u1ea7m n\u1ec1n l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a d\u1eef li\u1ec7u. Lu\u00f4n s\u1eed d\u1ee5ng m\u1ed9t \u201cv\u00f9ng \u0111\u1ec7m\u201d m\u00e0u \u0111\u01a1n s\u1eafc ph\u00eda sau m\u00e3 c\u1ee7a b\u1ea1n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o n\u00f3 n\u1ed5i b\u1eadt r\u00f5 r\u00e0ng so v\u1edbi ph\u1ea7n c\u00f2n l\u1ea1i c\u1ee7a t\u00e0i li\u1ec7u ti\u1ebfp th\u1ecb c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Th\u1eed Tr\u00ecnh t\u1ea1o m\u00e3 QR Pageloot<\/strong> C\u1ea7n m\u1ed9t m\u00e3 tr\u00f4ng chuy\u00ean nghi\u1ec7p v\u00e0 qu\u00e9t \u0111\u01b0\u1ee3c m\u1ecdi l\u00fac? <a href=\"https:\/\/pageloot.com\/vi\/qr-code-generator\/\">T\u1ea1o m\u00e3 QR \u0111\u1ed9ng \u0111\u1ea7u ti\u00ean c\u1ee7a b\u1ea1n<\/a> v\u1edbi Pageloot \u0111\u1ec3 truy c\u1eadp c\u00e1c ki\u1ec3m tra kh\u1ea3 n\u0103ng qu\u00e9t t\u00edch h\u1ee3p v\u00e0 c\u00e1c t\u00ednh n\u0103ng t\u00f9y ch\u1ec9nh n\u00e2ng cao.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">V\u1ecb tr\u00ed chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ec3 t\u01b0\u01a1ng t\u00e1c t\u1ed1i \u0111a<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ecb tr\u00ed b\u1ea1n \u0111\u1eb7t m\u00e3 c\u0169ng quan tr\u1ecdng nh\u01b0 v\u1ebb ngo\u00e0i c\u1ee7a n\u00f3, v\u00ec b\u1ea1n c\u1ea7n thu h\u00fat s\u1ef1 ch\u00fa \u00fd c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0o th\u1eddi \u0111i\u1ec3m h\u1ecd c\u00f3 nhi\u1ec1u kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c nh\u1ea5t. \u0110\u1ed1i v\u1edbi \u00e1p ph\u00edch, t\u1edd r\u01a1i v\u00e0 c\u1eeda s\u1ed5 c\u1eeda h\u00e0ng, h\u00e3y \u0111\u1eb7t m\u00e3 QR \u1edf ngang t\u1ea7m m\u1eaft, th\u01b0\u1eddng l\u00e0 t\u1eeb 3,5 \u0111\u1ebfn 5,5 feet. V\u1ecb tr\u00ed n\u00e0y t\u1ea1o c\u1ea3m gi\u00e1c t\u1ef1 nhi\u00ean cho ng\u01b0\u1eddi d\u00f9ng c\u1ea7m \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh v\u00e0 tr\u00e1nh vi\u1ec7c ph\u1ea3i v\u1edbi ho\u1eb7c c\u00fai ng\u01b0\u1eddi m\u1ed9t c\u00e1ch kh\u00f3 ch\u1ecbu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u1ec7u qu\u1ea3 c\u1ee7a <a href=\"https:\/\/pageloot.com\/vi\/blog\/ultimate-guide-to-qr-code-placement-in-marketing\/\">v\u1ecb tr\u00ed tr\u00ean c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng kh\u00e1c nhau<\/a> th\u01b0\u1eddng \u0111\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh b\u1edfi ng\u1eef c\u1ea3nh c\u1ee5 th\u1ec3 c\u1ee7a t\u00e0i li\u1ec7u:<\/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-aspect-ratio-1-1-white-background-with-blue-and-ligh-5389-62bc183a9e4d.webp\" alt=\"V\u00ed d\u1ee5 v\u1ec1 v\u1ecb tr\u00ed \u0111\u1eb7t m\u00e3 QR\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bao b\u00ec s\u1ea3n ph\u1ea9m: Nghi\u00ean c\u1ee9u ch\u1ec9 ra r\u1eb1ng vi\u1ec7c \u0111\u1eb7t m\u00e3 QR \u1edf m\u1eb7t tr\u01b0\u1edbc gi\u00fap t\u0103ng 12% s\u1ed1 l\u01b0\u1ee3t qu\u00e9t so v\u1edbi nh\u1eefng m\u00e3 b\u1ecb \u1ea9n \u1edf m\u1eb7t sau ho\u1eb7c \u0111\u00e1y.<\/li>\n<li>B\u00e0n nh\u00e0 h\u00e0ng: M\u00e3 n\u00ean \u0111\u01b0\u1ee3c \u0111\u1eb7t tr\u00ean c\u00e1c b\u1ea3ng l\u1ec1u ho\u1eb7c \u0111\u1ebf l\u00f3t ly n\u01a1i ch\u00fang d\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn nh\u01b0ng kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m \u0103n u\u1ed1ng.<\/li>\n<li>M\u00e0n h\u00ecnh k\u1ef9 thu\u1eadt s\u1ed1: Khi hi\u1ec3n th\u1ecb m\u00e3 tr\u00ean TV ho\u1eb7c ki-\u1ed1t, h\u00e3y \u0111\u1ea3m b\u1ea3o m\u00e3 r\u1ed9ng \u00edt nh\u1ea5t 240 pixel v\u00e0 hi\u1ec3n th\u1ecb tr\u00ean m\u00e0n h\u00ecnh trong 10 \u0111\u1ebfn 15 gi\u00e2y \u0111\u1ec3 ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1eddi gian m\u1edf \u1ee9ng d\u1ee5ng m\u00e1y \u1ea3nh c\u1ee7a h\u1ecd.<\/li>\n<li>Th\u01b0 tr\u1ef1c ti\u1ebfp: \u0110\u1eb7t m\u00e3 \u1edf m\u1eb7t tr\u01b0\u1edbc ho\u1eb7c n\u1eafp sau \u0111\u1ea3m b\u1ea3o \u0111\u00f3 l\u00e0 m\u1ed9t trong nh\u1eefng \u0111i\u1ec1u \u0111\u1ea7u ti\u00ean ng\u01b0\u1eddi nh\u1eadn nh\u00ecn th\u1ea5y khi m\u1edf th\u01b0.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng v\u00e0 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1eadt li\u1ec7u v\u1eadt l\u00fd m\u00e0 m\u00e3 c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c in tr\u00ean \u0111\u00f3 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn hi\u1ec7u su\u1ea5t do ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng v\u00e0 h\u00ecnh d\u1ea1ng b\u1ec1 m\u1eb7t. C\u00e1c l\u1edbp ph\u1ee7 b\u00f3ng v\u00e0 m\u1eb7t ti\u1ec1n c\u1eeda h\u00e0ng b\u1eb1ng k\u00ednh t\u1ea1o ra ph\u1ea3n x\u1ea1 l\u00e0m \u201cm\u1edd\u201d \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n c\u1ee7a m\u00e3, khi\u1ebfn c\u00e1c b\u1ec1 m\u1eb7t m\u1edd l\u00e0 l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean cho h\u1ea7u h\u1ebft c\u00e1c bi\u1ec3n b\u00e1o. N\u1ebfu b\u1ea1n ph\u1ea3i s\u1eed d\u1ee5ng b\u1ec1 m\u1eb7t b\u00f3ng, h\u00e3y ki\u1ec3m tra m\u00e3 t\u1eeb nhi\u1ec1u g\u00f3c \u0111\u1ed9 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u00e1nh s\u00e1ng ch\u00f3i kh\u00f4ng ch\u1eb7n t\u1ea7m nh\u00ecn c\u1ee7a m\u00e1y qu\u00e9t.<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"wp-block-table__content\">\n<thead>\n<tr>\n<th>V\u1eadt ch\u1ea5t<\/th>\n<th>K\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u<\/th>\n<th>\u0110\u1ed9 b\u1ec1n<\/th>\n<th>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng t\u1ed1t nh\u1ea5t<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Gi\u1ea5y<\/td>\n<td>0,4 inch<\/td>\n<td>Th\u1ea5p<\/td>\n<td>T\u1edd r\u01a1i, t\u00e0i li\u1ec7u qu\u1ea3ng c\u00e1o, danh thi\u1ebfp<\/td>\n<\/tr>\n<tr>\n<td>B\u00eca c\u1ee9ng<\/td>\n<td>0,6 inch<\/td>\n<td>Trung bi\u0340nh<\/td>\n<td>H\u1ed9p v\u1eadn chuy\u1ec3n, k\u1ec7 tr\u01b0ng b\u00e0y<\/td>\n<\/tr>\n<tr>\n<td>V\u1ea3i<\/td>\n<td>0,8 inch<\/td>\n<td>Cao<\/td>\n<td>Qu\u1ea7n \u00e1o, bi\u1ec3u ng\u1eef, t\u00fai tote<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ebft c\u1ea5u v\u00e0 h\u00ecnh d\u1ea1ng b\u1ec1 m\u1eb7t c\u0169ng \u0111\u00f3ng m\u1ed9t vai tr\u00f2. \u0110\u1eb7t m\u00e3 tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng cong s\u1eafc n\u00e9t, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1ed9t chai nh\u1ecf, c\u00f3 th\u1ec3 l\u00e0m bi\u1ebfn d\u1ea1ng c\u00e1c m\u00f4-\u0111un v\u00e0 ng\u0103n camera l\u1ea5y n\u00e9t tr\u00ean m\u1ed9t m\u1eb7t ph\u1eb3ng. \u0110\u1ed1i v\u1edbi nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0y, n\u00ean s\u1eed d\u1ee5ng m\u1ee9c \u0111\u1ed9 s\u1eeda l\u1ed7i cao h\u01a1n \u2013 c\u1ee5 th\u1ec3 l\u00e0 C\u1ea5p Q ho\u1eb7c H. Nh\u1eefng <a href=\"https:\/\/pageloot.com\/vi\/how-to\/understand-qr-code-data-limits\/\">gi\u1edbi h\u1ea1n d\u1eef li\u1ec7u v\u00e0 s\u1eeda l\u1ed7i<\/a> c\u00e0i \u0111\u1eb7t cho ph\u00e9p m\u00e3 v\u1eabn ho\u1ea1t \u0111\u1ed9ng ngay c\u1ea3 khi t\u1edbi 30% b\u1ec1 m\u1eb7t c\u1ee7a n\u00f3 b\u1ecb che khu\u1ea5t do h\u01b0 h\u1ecfng, b\u1ee5i b\u1ea9n ho\u1eb7c bi\u1ebfn d\u1ea1ng m\u00f4i tr\u01b0\u1eddng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p thi\u1ebft k\u1ebf chu \u0111\u00e1o v\u1edbi v\u1ecb tr\u00ed \u0111\u1eb7t chi\u1ebfn l\u01b0\u1ee3c, b\u1ea1n bi\u1ebfn m\u1ed9t l\u1ed1i t\u1eaft k\u1ef9 thu\u1eadt s\u1ed1 \u0111\u01a1n gi\u1ea3n th\u00e0nh m\u1ed9t c\u00f4ng c\u1ee5 ti\u1ebfp th\u1ecb hi\u1ec7u su\u1ea5t cao. Lu\u00f4n ki\u1ec3m tra s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng c\u1ee7a b\u1ea1n tr\u00ean c\u1ea3 thi\u1ebft b\u1ecb iOS v\u00e0 Android trong m\u00f4i tr\u01b0\u1eddng th\u1ef1c t\u1ebf n\u01a1i n\u00f3 s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u00e1n gi\u1ea3 c\u1ee7a b\u1ea1n c\u00f3 tr\u1ea3i nghi\u1ec7m kh\u00f4ng g\u1eb7p tr\u1edf ng\u1ea1i.<\/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-676eaef1b22d\"><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\u00e3 QR v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt c\u00f3 th\u1ec3 nh\u1ecf t\u1edbi 0,4 x 0,4 inch, nh\u01b0ng k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u th\u1ef1c t\u1ebf \u0111\u1ec3 qu\u00e9t \u0111\u00e1ng tin c\u1eady tr\u00ean c\u00e1c t\u00e0i li\u1ec7u ti\u1ebfp th\u1ecb l\u00e0 0,8 x 0,8 inch. B\u1ea5t k\u1ef3 k\u00edch th\u01b0\u1edbc n\u00e0o nh\u1ecf h\u01a1n \u0111\u1ec1u c\u00f3 nguy c\u01a1 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00e1c thi\u1ebft b\u1ecb c\u0169 h\u01a1n ho\u1eb7c trong \u0111i\u1ec1u ki\u1ec7n \u00e1nh s\u00e1ng kh\u00f4ng t\u1ed1i \u01b0u.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-03c943b5815b\"><strong class=\"schema-faq-question\">T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u00e3 QR m\u00e0u thay v\u00ec \u0111en tr\u1eafng kh\u00f4ng?<\/strong> <p class=\"schema-faq-answer\">C\u00f3, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u00e0u t\u00f9y ch\u1ec9nh mi\u1ec5n l\u00e0 b\u1ea1n duy tr\u00ec t\u1ef7 l\u1ec7 t\u01b0\u01a1ng ph\u1ea3n cao. M\u00e0u xanh \u0111\u1eadm, xanh l\u00e1 c\u00e2y ho\u1eb7c \u0111\u1ecf tr\u00ean n\u1ec1n tr\u1eafng ho\u1eb7c v\u00e0ng nh\u1ea1t th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng t\u1ed1t, nh\u01b0ng b\u1ea1n n\u00ean tr\u00e1nh s\u1eed d\u1ee5ng m\u00e0u s\u00e1ng cho c\u00e1c m\u00f4-\u0111un.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-57e2edd27b3b\"><strong class=\"schema-faq-question\">L\u00e0m c\u00e1ch n\u00e0o \u0111\u1ec3 kh\u1eafc ph\u1ee5c m\u00e3 QR kh\u00f4ng th\u1ec3 qu\u00e9t \u0111\u01b0\u1ee3c tr\u00ean b\u1ec1 m\u1eb7t cong?<\/strong> <p class=\"schema-faq-answer\">\u0110\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng qu\u00e9t tr\u00ean c\u00e1c b\u1ec1 m\u1eb7t cong, b\u1ea1n c\u00f3 th\u1ec3 gi\u1ea3m k\u00edch th\u01b0\u1edbc m\u00e3 \u0111\u1ec3 n\u00f3 n\u1eb1m tr\u00ean ph\u1ea7n ph\u1eb3ng h\u01a1n c\u1ee7a b\u1ec1 m\u1eb7t. Ngo\u00e0i ra, vi\u1ec7c s\u1eed d\u1ee5ng m\u00e3 QR \u0111\u1ed9ng gi\u00fap gi\u1eef m\u1eadt \u0111\u1ed9 m\u00f4-\u0111un th\u1ea5p, l\u00e0m cho m\u00e3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu t\u1ed1t h\u01a1n v\u1edbi bi\u1ebfn d\u1ea1ng h\u00ecnh h\u1ecdc do \u0111\u01b0\u1eddng cong g\u00e2y ra.<\/p> <\/div> <\/div>\n\n\n\n\n<p class=\"wp-block-paragraph\">S\u1eb5n s\u00e0ng k\u1ebft n\u1ed1i ti\u1ebfp th\u1ecb v\u1eadt l\u00fd c\u1ee7a b\u1ea1n v\u1edbi th\u00f4ng tin chi ti\u1ebft k\u1ef9 thu\u1eadt s\u1ed1? <a href=\"https:\/\/pageloot.com\/vi\/qr-code-generator\/\">B\u1eaft \u0111\u1ea7u d\u00f9ng th\u1eed mi\u1ec5n ph\u00ed v\u1edbi Pageloot<\/a> v\u00e0 qu\u1ea3n l\u00fd t\u1ea5t c\u1ea3 c\u00e1c m\u00e3 QR \u0111\u1ed9ng c\u1ee7a b\u1ea1n t\u1eeb m\u1ed9t b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n t\u1eadp trung.<\/p>","protected":false},"excerpt":{"rendered":"<p>T\u1ed1i \u01b0u h\u00f3a m\u1ee9c \u0111\u1ed9 t\u01b0\u01a1ng t\u00e1c v\u1edbi m\u00e3 QR b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hay nh\u1ea5t v\u1ec1 v\u1ecb tr\u00ed \u0111\u1eb7t v\u00e0 kh\u1ea3 n\u0103ng qu\u00e9t. T\u00ecm hi\u1ec3u c\u00e1c quy t\u1eafc v\u1ec1 k\u00edch th\u01b0\u1edbc, \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n v\u00e0 c\u00e1ch tr\u00e1nh c\u00e1c l\u1ed7i thi\u1ebft k\u1ebf ph\u1ed5 bi\u1ebfn.<\/p>","protected":false},"author":17,"featured_media":50783,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[2635],"tags":[],"class_list":["post-48240","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 Placement and Scannability<\/title>\n<meta name=\"description\" content=\"Optimize QR code engagement with best practices for placement and scannability. Learn the rules for sizing, contrast, and how to avoid common design mistakes.\" \/>\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-placement-mistakes\/\" \/>\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 Placement and Scannability\" \/>\n<meta property=\"og:description\" content=\"Optimize QR code engagement with best practices for placement and scannability. Learn the rules for sizing, contrast, and how to avoid common design mistakes.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pageloot.com\/vi\/blog\/qr-code-placement-mistakes\/\" \/>\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=\"2025-12-18T15:41:57+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-image-aspect-ratio-1-1-a-marketer-in-a-bright-retail-5955-3c6abba79eba.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\\\/blog\\\/qr-code-placement-mistakes\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/\"},\"author\":{\"name\":\"Siim T\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#\\\/schema\\\/person\\\/fa28992c2e52546f0812833bac852dfe\"},\"headline\":\"Guidelines for QR Code Placement and Scannability\",\"datePublished\":\"2025-12-18T15:41:57+00:00\",\"dateModified\":\"2026-04-22T13:14:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/\"},\"wordCount\":1225,\"publisher\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/photorealistic-lifestyle-image-aspect-ratio-1-1-a-marketer-in-a-bright-retail-5955-3c6abba79eba.webp\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"vi\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/\",\"url\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/\",\"name\":\"Guidelines for QR Code Placement and Scannability\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/photorealistic-lifestyle-image-aspect-ratio-1-1-a-marketer-in-a-bright-retail-5955-3c6abba79eba.webp\",\"datePublished\":\"2025-12-18T15:41:57+00:00\",\"dateModified\":\"2026-04-22T13:14:09+00:00\",\"description\":\"Optimize QR code engagement with best practices for placement and scannability. Learn the rules for sizing, contrast, and how to avoid common design mistakes.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/#breadcrumb\"},\"mainEntity\":[{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/#faq-question-676eaef1b22d\"},{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/#faq-question-03c943b5815b\"},{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/#faq-question-57e2edd27b3b\"}],\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/#primaryimage\",\"url\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/photorealistic-lifestyle-image-aspect-ratio-1-1-a-marketer-in-a-bright-retail-5955-3c6abba79eba.webp\",\"contentUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/photorealistic-lifestyle-image-aspect-ratio-1-1-a-marketer-in-a-bright-retail-5955-3c6abba79eba.webp\",\"width\":1024,\"height\":1024,\"caption\":\"QR code scanning\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/pageloot.com\\\/es\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Blog\",\"item\":\"https:\\\/\\\/pageloot.com\\\/c\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Guidelines for QR Code Placement and Scannability\"}]},{\"@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\\\/blog\\\/qr-code-placement-mistakes\\\/#faq-question-676eaef1b22d\",\"position\":1,\"url\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/#faq-question-676eaef1b22d\",\"name\":\"What is the absolute smallest size a QR code can be?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"While a QR code can technically be as small as 0.4 x 0.4 inches, the practical minimum for reliable scanning on marketing materials is 0.8 x 0.8 inches. Anything smaller risks failure on older devices or in sub-optimal lighting conditions.\",\"inLanguage\":\"vi\"},\"inLanguage\":\"vi\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/#faq-question-03c943b5815b\",\"position\":2,\"url\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/#faq-question-03c943b5815b\",\"name\":\"Can I use a colored QR code instead of black and white?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, you can use custom colors as long as you maintain a high contrast ratio. Dark blue, green, or red on a white or light yellow background typically works well, but you should avoid using light colors for the modules themselves.\",\"inLanguage\":\"vi\"},\"inLanguage\":\"vi\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/#faq-question-57e2edd27b3b\",\"position\":3,\"url\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/qr-code-placement-mistakes\\\/#faq-question-57e2edd27b3b\",\"name\":\"How do I fix a QR code that will not scan on a curved surface?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"To improve scanning on curves, you can reduce the size of the code so it sits on a flatter portion of the surface. Alternatively, using a dynamic QR code keeps the module density low, which makes the code more resilient to the geometric distortion caused by the curve.\",\"inLanguage\":\"vi\"},\"inLanguage\":\"vi\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"H\u01b0\u1edbng d\u1eabn \u0111\u1eb7t m\u00e3 QR v\u00e0 kh\u1ea3 n\u0103ng qu\u00e9t","description":"T\u1ed1i \u01b0u h\u00f3a m\u1ee9c \u0111\u1ed9 t\u01b0\u01a1ng t\u00e1c v\u1edbi m\u00e3 QR b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hay nh\u1ea5t v\u1ec1 v\u1ecb tr\u00ed \u0111\u1eb7t v\u00e0 kh\u1ea3 n\u0103ng qu\u00e9t. T\u00ecm hi\u1ec3u c\u00e1c quy t\u1eafc v\u1ec1 k\u00edch th\u01b0\u1edbc, \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n v\u00e0 c\u00e1ch tr\u00e1nh c\u00e1c l\u1ed7i thi\u1ebft k\u1ebf ph\u1ed5 bi\u1ebfn.","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\/blog\/qr-code-placement-mistakes\/","og_locale":"vi_VN","og_type":"article","og_title":"Guidelines for QR Code Placement and Scannability","og_description":"Optimize QR code engagement with best practices for placement and scannability. Learn the rules for sizing, contrast, and how to avoid common design mistakes.","og_url":"https:\/\/pageloot.com\/vi\/blog\/qr-code-placement-mistakes\/","og_site_name":"Pageloot","article_publisher":"https:\/\/www.facebook.com\/pageloot\/","article_published_time":"2025-12-18T15:41:57+00:00","article_modified_time":"2026-04-22T13:14:09+00:00","og_image":[{"width":1024,"height":1024,"url":"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/03\/photorealistic-lifestyle-image-aspect-ratio-1-1-a-marketer-in-a-bright-retail-5955-3c6abba79eba.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\/blog\/qr-code-placement-mistakes\/#article","isPartOf":{"@id":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/"},"author":{"name":"Siim T","@id":"https:\/\/pageloot.com\/es\/#\/schema\/person\/fa28992c2e52546f0812833bac852dfe"},"headline":"Guidelines for QR Code Placement and Scannability","datePublished":"2025-12-18T15:41:57+00:00","dateModified":"2026-04-22T13:14:09+00:00","mainEntityOfPage":{"@id":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/"},"wordCount":1225,"publisher":{"@id":"https:\/\/pageloot.com\/es\/#organization"},"image":{"@id":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/#primaryimage"},"thumbnailUrl":"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/03\/photorealistic-lifestyle-image-aspect-ratio-1-1-a-marketer-in-a-bright-retail-5955-3c6abba79eba.webp","articleSection":["Blog"],"inLanguage":"vi"},{"@type":["WebPage","FAQPage"],"@id":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/","url":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/","name":"H\u01b0\u1edbng d\u1eabn \u0111\u1eb7t m\u00e3 QR v\u00e0 kh\u1ea3 n\u0103ng qu\u00e9t","isPartOf":{"@id":"https:\/\/pageloot.com\/es\/#website"},"primaryImageOfPage":{"@id":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/#primaryimage"},"image":{"@id":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/#primaryimage"},"thumbnailUrl":"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/03\/photorealistic-lifestyle-image-aspect-ratio-1-1-a-marketer-in-a-bright-retail-5955-3c6abba79eba.webp","datePublished":"2025-12-18T15:41:57+00:00","dateModified":"2026-04-22T13:14:09+00:00","description":"T\u1ed1i \u01b0u h\u00f3a m\u1ee9c \u0111\u1ed9 t\u01b0\u01a1ng t\u00e1c v\u1edbi m\u00e3 QR b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hay nh\u1ea5t v\u1ec1 v\u1ecb tr\u00ed \u0111\u1eb7t v\u00e0 kh\u1ea3 n\u0103ng qu\u00e9t. T\u00ecm hi\u1ec3u c\u00e1c quy t\u1eafc v\u1ec1 k\u00edch th\u01b0\u1edbc, \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n v\u00e0 c\u00e1ch tr\u00e1nh c\u00e1c l\u1ed7i thi\u1ebft k\u1ebf ph\u1ed5 bi\u1ebfn.","breadcrumb":{"@id":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/#breadcrumb"},"mainEntity":[{"@id":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/#faq-question-676eaef1b22d"},{"@id":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/#faq-question-03c943b5815b"},{"@id":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/#faq-question-57e2edd27b3b"}],"inLanguage":"vi","potentialAction":[{"@type":"ReadAction","target":["https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/"]}]},{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/#primaryimage","url":"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/03\/photorealistic-lifestyle-image-aspect-ratio-1-1-a-marketer-in-a-bright-retail-5955-3c6abba79eba.webp","contentUrl":"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/03\/photorealistic-lifestyle-image-aspect-ratio-1-1-a-marketer-in-a-bright-retail-5955-3c6abba79eba.webp","width":1024,"height":1024,"caption":"QR code scanning"},{"@type":"BreadcrumbList","@id":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/pageloot.com\/es\/"},{"@type":"ListItem","position":2,"name":"Blog","item":"https:\/\/pageloot.com\/c\/blog\/"},{"@type":"ListItem","position":3,"name":"Guidelines for QR Code Placement and Scannability"}]},{"@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\/blog\/qr-code-placement-mistakes\/#faq-question-676eaef1b22d","position":1,"url":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/#faq-question-676eaef1b22d","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 a QR code can technically be as small as 0.4 x 0.4 inches, the practical minimum for reliable scanning on marketing materials is 0.8 x 0.8 inches. Anything smaller risks failure on older devices or in sub-optimal lighting conditions.","inLanguage":"vi"},"inLanguage":"vi"},{"@type":"Question","@id":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/#faq-question-03c943b5815b","position":2,"url":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/#faq-question-03c943b5815b","name":"T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u00e3 QR m\u00e0u thay v\u00ec \u0111en tr\u1eafng kh\u00f4ng?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, you can use custom colors as long as you maintain a high contrast ratio. Dark blue, green, or red on a white or light yellow background typically works well, but you should avoid using light colors for the modules themselves.","inLanguage":"vi"},"inLanguage":"vi"},{"@type":"Question","@id":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/#faq-question-57e2edd27b3b","position":3,"url":"https:\/\/pageloot.com\/blog\/qr-code-placement-mistakes\/#faq-question-57e2edd27b3b","name":"L\u00e0m c\u00e1ch n\u00e0o \u0111\u1ec3 kh\u1eafc ph\u1ee5c m\u00e3 QR kh\u00f4ng th\u1ec3 qu\u00e9t \u0111\u01b0\u1ee3c tr\u00ean b\u1ec1 m\u1eb7t cong?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"To improve scanning on curves, you can reduce the size of the code so it sits on a flatter portion of the surface. Alternatively, using a dynamic QR code keeps the module density low, which makes the code more resilient to the geometric distortion caused by the curve.","inLanguage":"vi"},"inLanguage":"vi"}]}},"_links":{"self":[{"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/48240","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=48240"}],"version-history":[{"count":4,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/48240\/revisions"}],"predecessor-version":[{"id":52773,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/48240\/revisions\/52773"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/media\/50783"}],"wp:attachment":[{"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/media?parent=48240"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/categories?post=48240"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/tags?post=48240"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}