{"id":42239,"date":"2025-07-20T02:38:39","date_gmt":"2025-07-20T02:38:39","guid":{"rendered":"https:\/\/staging.pageloot.com\/uncategorized\/best-qr-code-sizes-for-business-cards\/"},"modified":"2026-10-23T06:01:00","modified_gmt":"2026-10-23T06:01:00","slug":"best-qr-code-sizes-for-business-cards","status":"publish","type":"post","link":"https:\/\/pageloot.com\/vi\/blog\/best-qr-code-sizes-for-business-cards\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn k\u00edch th\u01b0\u1edbc m\u00e3 QR tr\u00ean danh thi\u1ebfp"},"content":{"rendered":"<p class=\"wp-block-paragraph\">K\u00edch th\u01b0\u1edbc m\u00e3 QR t\u1ed1i thi\u1ec3u cho danh thi\u1ebfp l\u00e0 kho\u1ea3ng 0.6 x 0.6 inch (1.5 x 1.5 cm), v\u00e0 ch\u1ec9 khi m\u00e3 ch\u1ee9a m\u1ed9t li\u00ean k\u1ebft ng\u1eafn, in s\u1eafc n\u00e9t v\u00e0 c\u00f3 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n cao. \u0110\u1ec3 qu\u00e9t \u0111\u00e1ng tin c\u1eady, h\u00e3y l\u00e0m cho n\u00f3 \u00edt nh\u1ea5t 0.8 x 0.8 inch (2 x 2 cm). H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p c\u00e1c k\u00edch th\u01b0\u1edbc ch\u00ednh x\u00e1c, c\u00e1c quy t\u1eafc in \u0111\u1eb1ng sau ch\u00fang v\u00e0 m\u1ed9t danh s\u00e1ch ki\u1ec3m tra \u0111\u1ec3 ki\u1ec3m tra th\u1ebb c\u1ee7a b\u1ea1n tr\u01b0\u1edbc khi b\u1ea1n \u0111\u1eb7t h\u00e0ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">M\u00e3 QR n\u00ean l\u1edbn \u0111\u1ebfn m\u1ee9c n\u00e0o tr\u00ean danh thi\u1ebfp?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi danh thi\u1ebfp ti\u00eau chu\u1ea9n, k\u00edch th\u01b0\u1edbc khuy\u1ebfn ngh\u1ecb l\u00e0 0.8 x 0.8 inch (2 x 2 cm). V\u1edbi k\u00edch th\u01b0\u1edbc \u0111\u00f3, camera \u0111i\u1ec7n tho\u1ea1i l\u1ea5y n\u00e9t nhanh, ngay c\u1ea3 trong \u0111i\u1ec1u ki\u1ec7n \u00e1nh s\u00e1ng y\u1ebfu ho\u1eb7c \u1edf m\u1ed9t g\u00f3c nh\u1ecf. M\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng gi\u1eef th\u1ebb c\u00e1ch \u0111i\u1ec7n tho\u1ea1i 4 \u0111\u1ebfn 10 inch (10 \u0111\u1ebfn 25 cm), v\u00ec v\u1eady m\u00e3 c\u1ea7n \u0111\u1ee7 l\u1edbn \u0111\u1ec3 chi\u1ebfm m\u1ed9t ph\u1ea7n t\u1ed1t trong khung nh\u00ecn c\u1ee7a camera \u1edf kho\u1ea3ng c\u00e1ch \u0111\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t quy t\u1eafc ph\u1ed5 bi\u1ebfn l\u00e0 t\u1ef7 l\u1ec7 10:1: c\u1ee9 m\u1ed7i 10 cm kho\u1ea3ng c\u00e1ch qu\u00e9t, m\u00e3 ph\u1ea3i r\u1ed9ng \u00edt nh\u1ea5t 1 cm. \u1ede kho\u1ea3ng c\u00e1ch 10 inch (25 cm), \u0111i\u1ec1u \u0111\u00f3 mang l\u1ea1i kho\u1ea3ng 1 inch (2.5 cm) \u0111\u1ec3 qu\u00e9t d\u1ec5 d\u00e0ng nh\u1ea5t, v\u00e0 kho\u1ea3ng c\u00e1ch ng\u1eafn h\u01a1n cho ph\u00e9p c\u00e1c m\u00e3 nh\u1ecf h\u01a1n. \u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao 0.8 inch ho\u1ea1t \u0111\u1ed9ng cho h\u1ea7u h\u1ebft c\u00e1c th\u1ebb v\u00e0 b\u1ea5t c\u1ee9 th\u1ee9 g\u00ec d\u01b0\u1edbi 0.6 inch b\u1eaft \u0111\u1ea7u g\u1eb7p l\u1ed7i tr\u00ean c\u00e1c \u0111i\u1ec7n tho\u1ea1i c\u0169 h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">K\u00edch th\u01b0\u1edbc m\u00e3 QR t\u1ed1i thi\u1ec3u v\u00e0 k\u00edch th\u01b0\u1edbc khuy\u1ebfn ngh\u1ecb<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Danh thi\u1ebfp c\u00f3 \u00edt kh\u00f4ng gian, v\u00ec v\u1eady vi\u1ec7c quy\u1ebft \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc m\u00e3 tr\u01b0\u1edbc r\u1ed3i thi\u1ebft k\u1ebf xung quanh n\u00f3 s\u1ebd h\u1eefu \u00edch. K\u00edch th\u01b0\u1edbc khuy\u1ebfn ngh\u1ecb l\u00e0 0.8 x 0.8 inch (2 x 2 cm). N\u1ebfu th\u1ebb b\u1ecb qu\u00e1 t\u1ea3i, k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u l\u00e0 0.6 x 0.6 inch (1.5 x 1.5 cm). \u0110\u00e2y l\u00e0 c\u00e2u tr\u1ea3 l\u1eddi cho c\u00e2u h\u1ecfi m\u00e3 QR c\u00f3 th\u1ec3 nh\u1ecf \u0111\u1ebfn m\u1ee9c n\u00e0o tr\u00ean danh thi\u1ebfp: 0.6 inch, v\u1edbi m\u1ed9t li\u00ean k\u1ebft ng\u1eafn, \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n cao v\u00e0 b\u1ea3n in s\u1ea1ch.<\/p>\n\n\n\n<figure><img decoding=\"async\" src=\"https:\/\/staging.pageloot.com\/wp-content\/uploads\/2026\/09\/simple-clean-infographic-square-or-vertical-layout-on-white-background-with-bla-6541-61c17d09894d-8d07d425a806.webp\" alt=\"h\u01b0\u1edbng d\u1eabn k\u00edch th\u01b0\u1edbc m\u00e3 QR c\u1ee7a ch\u00fang t\u00f4i\" \/><\/figure>\n\n\n\n<figure>\n<table>\n<thead>\n<tr>\n<th>Danh m\u1ee5c k\u00edch th\u01b0\u1edbc<\/th>\n<th>K\u00edch th\u01b0\u1edbc (Inch)<\/th>\n<th>K\u00edch th\u01b0\u1edbc (cm)<\/th>\n<th>\u0110\u1ed9 tin c\u1eady<\/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>T\u1ed1i thi\u1ec3u<\/td>\n<td>0.6 x 0.6 inch<\/td>\n<td>1,5 x 1,5cm<\/td>\n<td>V\u1eeba ph\u1ea3i<\/td>\n<td>URL ng\u1eafn v\u00e0 d\u1eef li\u1ec7u m\u1eadt \u0111\u1ed9 th\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t<\/td>\n<td>0.8 x 0.8 inch<\/td>\n<td>2.0 x 2.0 cm<\/td>\n<td>Cao<\/td>\n<td>Danh thi\u1ebfp ti\u00eau chu\u1ea9n v\u00e0 li\u00ean k\u1ebft li\u00ean h\u1ec7<\/td>\n<\/tr>\n<tr>\n<td>M\u1eadt \u0111\u1ed9 cao<\/td>\n<td>1.0 x 1.0 in+<\/td>\n<td>2.5 x 2.5 cm+<\/td>\n<td>Cao<\/td>\n<td>Th\u1ebb li\u00ean h\u1ec7 chi ti\u1ebft v\u00e0 logo nh\u00fang<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c k\u00edch th\u01b0\u1edbc n\u00e0y ch\u1ec9 d\u00e0nh cho c\u00e1c \u00f4 vu\u00f4ng m\u00e0u \u0111en. Kho\u1ea3ng tr\u1ed1ng xung quanh m\u00e3 l\u00e0 b\u1ed5 sung, v\u00ec v\u1eady m\u00e3 0.8 inch c\u1ea7n kho\u1ea3ng 0.1 inch kh\u00f4ng gian tr\u1ed1ng \u1edf m\u1ed7i b\u00ean (xem v\u00f9ng y\u00ean t\u0129nh b\u00ean d\u01b0\u1edbi).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">K\u00edch th\u01b0\u1edbc m\u00e3 QR tr\u00ean danh thi\u1ebfp theo \u0111\u1ecbnh d\u1ea1ng th\u1ebb<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Danh thi\u1ebfp ti\u00eau chu\u1ea9n M\u1ef9 (3.5 x 2 inch): m\u00e3 0.8 inch chi\u1ebfm 40% chi\u1ec1u cao danh thi\u1ebfp. \u0110\u1eb7t n\u00f3 \u1edf m\u1eb7t sau \u0111\u1ec3 m\u1eb7t tr\u01b0\u1edbc lu\u00f4n s\u1ea1ch s\u1ebd.<\/li>\n<li>Danh thi\u1ebfp ti\u00eau chu\u1ea9n Ch\u00e2u \u00c2u (85 x 55 mm): s\u1eed d\u1ee5ng 20 \u0111\u1ebfn 25 mm. Quy t\u1eafc 2 cm t\u01b0\u01a1ng t\u1ef1 c\u0169ng \u00e1p d\u1ee5ng.<\/li>\n<li>Danh thi\u1ebfp g\u1eadp ho\u1eb7c vu\u00f4ng: b\u1ea1n c\u00f3 nhi\u1ec1u kh\u00f4ng gian h\u01a1n, v\u00ec v\u1eady h\u00e3y s\u1eed d\u1ee5ng m\u00e3 1 inch (2.5 cm) tr\u1edf l\u00ean v\u00e0 gi\u1eef m\u00e3 tr\u00e1nh xa n\u1ebfp g\u1ea5p.<\/li>\n<li>Ch\u1ec9 m\u1eb7t sau c\u1ee7a danh thi\u1ebfp: n\u1ebfu m\u1eb7t tr\u01b0\u1edbc \u0111\u00e3 \u0111\u1ea7y, h\u00e3y \u0111\u1eb7t m\u1ed9t m\u00e3 1 inch \u1edf m\u1eb7t sau k\u00e8m theo m\u1ed9t d\u00f2ng ng\u1eafn nh\u01b0 \u201cQu\u00e9t \u0111\u1ec3 l\u01b0u li\u00ean h\u1ec7 c\u1ee7a t\u00f4i\u201d.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">M\u1eadt \u0111\u1ed9 d\u1eef li\u1ec7u quy\u1ebft \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc m\u00e3 nh\u01b0 th\u1ebf n\u00e0o<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">K\u00edch th\u01b0\u1edbc m\u00e3 QR c\u1ee7a b\u1ea1n ph\u1ee5 thu\u1ed9c v\u00e0o l\u01b0\u1ee3ng d\u1eef li\u1ec7u n\u00f3 ch\u1ee9a. M\u00e3 QR l\u00e0 m\u1ed9t l\u01b0\u1edbi c\u00e1c \u00f4 vu\u00f4ng nh\u1ecf \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u00f4-\u0111un. Phi\u00ean b\u1ea3n 1 c\u00f3 21 x 21 m\u00f4-\u0111un v\u00e0 Phi\u00ean b\u1ea3n 40 c\u00f3 177 x 177 m\u00f4-\u0111un. Nhi\u1ec1u d\u1eef li\u1ec7u h\u01a1n c\u00f3 ngh\u0129a l\u00e0 nhi\u1ec1u m\u00f4-\u0111un h\u01a1n, v\u00e0 m\u1ed7i m\u00f4-\u0111un s\u1ebd nh\u1ecf h\u01a1n khi k\u00edch th\u01b0\u1edbc m\u00e3 v\u1eabn gi\u1eef nguy\u00ean. N\u1ebfu c\u00e1c m\u00f4-\u0111un in nh\u1ecf h\u01a1n \u0111\u1ed9 ph\u00e2n gi\u1ea3i m\u00e0 m\u00e1y \u1ea3nh c\u00f3 th\u1ec3 nh\u1eadn di\u1ec7n, vi\u1ec7c qu\u00e9t s\u1ebd th\u1ea5t b\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 ph\u00e9p t\u00ednh cho m\u00e3 2 cm (0.8 inch). M\u1ed9t li\u00ean k\u1ebft ng\u1eafn th\u01b0\u1eddng ph\u00f9 h\u1ee3p v\u1edbi m\u00e3 Phi\u00ean b\u1ea3n 2 (25 m\u00f4-\u0111un), v\u00ec v\u1eady m\u1ed7i m\u00f4-\u0111un kho\u1ea3ng 0.8 mm. M\u1ed9t b\u1ea3n ghi li\u00ean h\u1ec7 \u0111\u1ea7y \u0111\u1ee7 c\u00f3 th\u1ec3 c\u1ea7n Phi\u00ean b\u1ea3n 10 tr\u1edf l\u00ean (57 m\u00f4-\u0111un tr\u1edf l\u00ean), v\u00e0 m\u1ed7i m\u00f4-\u0111un gi\u1ea3m xu\u1ed1ng kho\u1ea3ng 0.35 mm. M\u00e3 th\u1ee9 hai kh\u00f3 in v\u00e0 qu\u00e9t h\u01a1n nhi\u1ec1u \u1edf c\u00f9ng k\u00edch th\u01b0\u1edbc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t vCard tr\u1ef1c ti\u1ebfp v\u1edbi t\u00ean, s\u1ed1 \u0111i\u1ec7n tho\u1ea1i, \u0111\u1ecba ch\u1ec9 email v\u00e0 \u0111\u1ecba ch\u1ec9 v\u0103n ph\u00f2ng c\u1ee7a b\u1ea1n t\u1ea1o ra m\u1ed9t l\u01b0\u1edbi d\u00e0y \u0111\u1eb7c. S\u1eed d\u1ee5ng m\u1ed9t <a href=\"https:\/\/pageloot.com\/vi\/vcard-qr-code-generator\/\">T\u1ea1o m\u00e3 QR vCard<\/a> \u0111\u1ec3 t\u1ea1o m\u1ed9t t\u1ec7p t\u0129nh tr\u1ef1c ti\u1ebfp th\u01b0\u1eddng c\u1ea7n m\u1ed9t m\u00e3 1 inch (2.5 cm) tr\u1edf l\u00ean \u0111\u1ec3 gi\u1eef \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng \u0111\u1ecdc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 gi\u1eef m\u00e3 c\u1ee7a b\u1ea1n nh\u1ecf g\u1ecdn v\u00e0 d\u1ec5 qu\u00e9t tr\u00ean m\u1ed9t danh thi\u1ebfp nh\u1ecf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u00e3 h\u00f3a m\u1ed9t li\u00ean k\u1ebft ng\u1eafn \u0111\u1ebfn trang li\u00ean h\u1ec7 c\u1ee7a b\u1ea1n thay v\u00ec v\u0103n b\u1ea3n li\u00ean h\u1ec7 th\u00f4 d\u00e0i.<\/li>\n<li>Ch\u1ec9 gi\u1eef l\u1ea1i c\u00e1c k\u00eanh li\u00ean h\u1ec7 thi\u1ebft y\u1ebfu.<\/li>\n<li>Gi\u1eef s\u1ed1 l\u01b0\u1ee3ng m\u00f4-\u0111un th\u1ea5p \u0111\u1ec3 m\u1ed7i \u00f4 vu\u00f4ng v\u1eabn l\u1edbn v\u00e0 s\u1eafc n\u00e9t.<\/li>\n<li>Tu\u00e2n th\u1ee7 c\u00e1c nguy\u00ean t\u1eafc v\u1ec1 c\u00e1ch <a href=\"https:\/\/pageloot.com\/vi\/how-to\/business-card-design-qr-code\/\">thi\u1ebft k\u1ebf danh thi\u1ebfp v\u1edbi m\u00e3 QR<\/a> \u0111\u1ec3 c\u00e2n b\u1eb1ng b\u1ed1 c\u1ee5c v\u00e0 ch\u1ee9c n\u0103ng.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t li\u00ean k\u1ebft ng\u1eafn l\u00e0 c\u00e1ch \u0111\u01a1n gi\u1ea3n nh\u1ea5t \u0111\u1ec3 l\u00e0m \u0111i\u1ec1u n\u00e0y. M\u00e3 QR \u0111\u1ed9ng l\u01b0u tr\u1eef m\u1ed9t li\u00ean k\u1ebft ng\u1eafn v\u00e0 cho ph\u00e9p b\u1ea1n thay \u0111\u1ed5i trang \u0111\u00edch sau khi th\u1ebb \u0111\u01b0\u1ee3c in. Pageloot cung c\u1ea5p m\u00e3 \u0111\u1ed9ng v\u1edbi b\u1ea3n d\u00f9ng th\u1eed mi\u1ec5n ph\u00ed 14 ng\u00e0y, v\u00e0 b\u1ea1n c\u00f3 th\u1ec3 xem c\u00e1c g\u00f3i t\u1ea1i <a href=\"https:\/\/pageloot.com\/vi\/pricing\/\">pageloot.com\/pricing<\/a>. M\u1ed9t m\u00e3 t\u0129nh l\u00e0 \u0111\u1ee7 n\u1ebfu li\u00ean k\u1ebft c\u1ee7a b\u1ea1n s\u1ebd kh\u00f4ng bao gi\u1edd thay \u0111\u1ed5i.<\/p>\n\n\n\n<blockquote class=\"is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>T\u1ea1o M\u00e3 Th\u1ebb Danh Thi\u1ebfp T\u00f9y Ch\u1ec9nh C\u1ee7a B\u1ea1n<\/strong> B\u1ea1n \u0111\u00e3 s\u1eb5n s\u00e0ng t\u1ea1o m\u1ed9t m\u00e3 li\u00ean h\u1ec7 c\u00f3 th\u1ec3 qu\u00e9t v\u00e0 theo d\u00f5i \u0111\u01b0\u1ee3c ch\u01b0a? S\u1eed d\u1ee5ng <a href=\"https:\/\/pageloot.com\/vi\/business-card-qr-code-generator\/\">T\u1ea1o m\u00e3 QR danh thi\u1ebfp<\/a> \u0111\u1ec3 thi\u1ebft k\u1ebf m\u00e3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao v\u00e0 chia s\u1ebb th\u00f4ng tin chi ti\u1ebft c\u1ee7a b\u1ea1n ch\u1ec9 v\u1edbi m\u1ed9t l\u1ea7n qu\u00e9t.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">M\u00e3 QR tr\u00ean Th\u1ebb Danh Thi\u1ebfp T\u1ed1t hay X\u1ea5u?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00e3 QR tr\u00ean danh thi\u1ebfp l\u00e0 t\u1ed1t khi m\u00e3 \u0111\u1ee7 l\u1edbn, d\u1ec5 qu\u00e9t v\u00e0 d\u1eabn \u0111\u1ebfn n\u1ed9i dung h\u1eefu \u00edch. Ch\u00fang l\u00e0 x\u1ea5u khi m\u00e3 qu\u00e1 nh\u1ecf, li\u00ean k\u1ebft b\u1ecb h\u1ecfng ho\u1eb7c trang kh\u00f4ng \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u cho \u0111i\u1ec7n tho\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ee3i \u00edch l\u00e0 c\u00f3 th\u1eadt. Ng\u01b0\u1eddi \u0111\u00f3 c\u00f3 th\u1ec3 l\u01b0u danh b\u1ea1 c\u1ee7a b\u1ea1n ho\u1eb7c m\u1edf h\u1ed3 s\u01a1 c\u1ee7a b\u1ea1n ch\u1ec9 trong hai gi\u00e2y, v\u00e0 b\u1ea1n c\u00f3 th\u1ec3 ch\u1ee9a nhi\u1ec1u th\u00f4ng tin h\u01a1n so v\u1edbi th\u1ebb cho ph\u00e9p. R\u1ee7i ro c\u0169ng c\u00f3 th\u1eadt: m\u1ed9t m\u00e3 kh\u00f4ng qu\u00e9t \u0111\u01b0\u1ee3c tr\u00f4ng c\u1ea9u th\u1ea3, v\u00e0 m\u1ed9t m\u00e3 \u0111\u01b0\u1ee3c in v\u1edbi li\u00ean k\u1ebft sai kh\u00f4ng th\u1ec3 s\u1eeda \u0111\u01b0\u1ee3c tr\u00ean m\u00e3 t\u0129nh. H\u00e3y s\u1eed d\u1ee5ng c\u00e1c quy t\u1eafc n\u00e0y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T\u1ea1o m\u00e3 c\u00f3 k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u 0.8 inch (2 cm).<\/li>\n<li>Tr\u1ecf n\u00f3 \u0111\u1ebfn m\u1ed9t trang m\u1edf nhanh tr\u00ean \u0111i\u1ec7n tho\u1ea1i.<\/li>\n<li>Th\u00eam m\u1ed9t d\u00f2ng ng\u1eafn b\u00ean c\u1ea1nh \u0111\u1ec3 cho bi\u1ebft ng\u01b0\u1eddi \u0111\u00f3 s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c g\u00ec, ch\u1eb3ng h\u1ea1n nh\u01b0 \u201cL\u01b0u li\u00ean h\u1ec7 c\u1ee7a t\u00f4i\u201d ho\u1eb7c \u201cXem c\u00f4ng vi\u1ec7c c\u1ee7a t\u00f4i\u201d.<\/li>\n<li>Ki\u1ec3m tra b\u1ea3n in th\u1eed tr\u01b0\u1edbc khi b\u1ea1n \u0111\u1eb7t in s\u1ed1 l\u01b0\u1ee3ng l\u1edbn.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Ti\u00eau Chu\u1ea9n K\u1ef9 Thu\u1eadt Thi\u1ebft Y\u1ebfu \u0111\u1ec3 Qu\u00e9t \u0110\u00e1ng Tin C\u1eady<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ec9 ri\u00eang k\u00edch th\u01b0\u1edbc kh\u00f4ng \u0111\u1ea3m b\u1ea3o qu\u00e9t t\u1ed1t. C\u00e1c quy t\u1eafc in n\u00e0y quy\u1ebft \u0111\u1ecbnh li\u1ec7u m\u00e1y \u1ea3nh c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c m\u1eabu hay kh\u00f4ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Duy tr\u00ec V\u00f9ng y\u00ean t\u0129nh<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00f9ng y\u00ean t\u0129nh l\u00e0 l\u1ec1 tr\u1ed1ng xung quanh to\u00e0n b\u1ed9 m\u00e3 QR. Ti\u00eau chu\u1ea9n ISO\/IEC y\u00eau c\u1ea7u \u00edt nh\u1ea5t b\u1ed1n m\u00f4-\u0111un \u1edf m\u1ed7i b\u00ean. \u0110\u1ed1i v\u1edbi m\u00e3 2 cm v\u1edbi 25 m\u00f4-\u0111un, l\u1ec1 \u0111\u00f3 kho\u1ea3ng 3 mm. Kho\u1ea3ng tr\u1ed1ng n\u00e0y cho m\u00e1y qu\u00e9t bi\u1ebft m\u00e3 b\u1eaft \u0111\u1ea7u t\u1eeb \u0111\u00e2u. V\u0103n b\u1ea3n, \u0111\u01b0\u1eddng vi\u1ec1n ho\u1eb7c h\u00ecnh \u1ea3nh n\u1ec1n b\u00ean trong l\u1ec1 n\u00e0y l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t g\u00e2y ra l\u1ed7i qu\u00e9t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u00c1p D\u1ee5ng \u0110\u1ed9 T\u01b0\u01a1ng Ph\u1ea3n M\u00e0u Cao<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00e1y qu\u00e9t \u0111\u1ecdc s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u0111\u1ed9 s\u00e1ng gi\u1eefa c\u00e1c m\u00f4-\u0111un t\u1ed1i v\u00e0 n\u1ec1n s\u00e1ng. M\u00e0u \u0111en tr\u00ean n\u1ec1n tr\u1eafng l\u00e0 l\u1ef1a ch\u1ecdn an to\u00e0n nh\u1ea5t. M\u00e0u xanh \u0111\u1eadm, xanh l\u00e1 \u0111\u1eadm ho\u1eb7c \u0111en tr\u00ean n\u1ec1n s\u00e1ng c\u0169ng ho\u1ea1t \u0111\u1ed9ng t\u1ed1t. Tr\u00e1nh c\u00e1c m\u00f4-\u0111un s\u00e1ng tr\u00ean n\u1ec1n t\u1ed1i (m\u00e3 \u0111\u1ea3o ng\u01b0\u1ee3c), v\u00ec m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng m\u00e1y \u1ea3nh m\u1eb7c \u0111\u1ecbnh kh\u00f4ng th\u1ec3 \u0111\u1ecdc ch\u00fang. Kh\u00f4ng s\u1eed d\u1ee5ng hai m\u00e0u trung t\u00ednh, ch\u1eb3ng h\u1ea1n nh\u01b0 cam tr\u00ean n\u1ec1n \u0111\u1ecf. \u0110\u1ecdc <a href=\"https:\/\/pageloot.com\/vi\/blog\/qr-code-color-contrast-best-practices\/\">h\u01b0\u1edbng d\u1eabn v\u1ec1 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n m\u00e0u m\u00e3 QR \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp<\/a> \u0111\u1ec3 ch\u1ecdn m\u1ed9t c\u1eb7p m\u00e0u an to\u00e0n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Xu\u1ea5t \u0110\u1ecbnh d\u1ea1ng In Vector<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c t\u1ec7p c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u1ea5p, ch\u1eb3ng h\u1ea1n nh\u01b0 JPEG 72 DPI, khi in s\u1ebd c\u00f3 c\u00e1c c\u1ea1nh b\u1ecb m\u1edd. \u0110\u1ec3 in, h\u00e3y g\u1eedi t\u1ec7p d\u01b0\u1edbi d\u1ea1ng SVG, EPS ho\u1eb7c PDF (vector), ch\u00fang s\u1ebd gi\u1eef \u0111\u01b0\u1ee3c \u0111\u1ed9 s\u1eafc n\u00e9t \u1edf m\u1ecdi k\u00edch th\u01b0\u1edbc. N\u1ebfu b\u1ea1n ch\u1ec9 c\u00f3 th\u1ec3 g\u1eedi PNG, h\u00e3y xu\u1ea5t \u1edf \u0111\u1ed9 ph\u00e2n gi\u1ea3i 300 DPI tr\u1edf l\u00ean theo k\u00edch th\u01b0\u1edbc in cu\u1ed1i c\u00f9ng. Nh\u1eefng \u0111i\u1ec1u n\u00e0y <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> gi\u00fap b\u1ea1n tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 tr\u01b0\u1edbc khi t\u1ec7p \u0111\u1ebfn c\u1eeda h\u00e0ng in.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">S\u1eeda L\u1ed7i v\u00e0 T\u00edch H\u1ee3p Logo<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00e3 QR s\u1eed d\u1ee5ng t\u00ednh n\u0103ng s\u1eeda l\u1ed7i Reed-Solomon. N\u00f3 cho ph\u00e9p m\u00e1y qu\u00e9t x\u00e2y d\u1ef1ng l\u1ea1i d\u1eef li\u1ec7u khi m\u1ed9t ph\u1ea7n c\u1ee7a m\u00e3 b\u1ecb tr\u1ea7y x\u01b0\u1edbc, nh\u0103n ho\u1eb7c b\u1ecb che ph\u1ee7. C\u00f3 b\u1ed1n c\u1ea5p \u0111\u1ed9:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u1ea5p \u0111\u1ed9 L kh\u00f4i ph\u1ee5c kho\u1ea3ng 7% d\u1eef li\u1ec7u b\u1ecb h\u1ecfng. S\u1eed d\u1ee5ng n\u00f3 cho c\u00e1c m\u00e3 nh\u1ecf, \u0111\u01a1n gi\u1ea3n kh\u00f4ng c\u00f3 logo.<\/li>\n<li>C\u1ea5p \u0111\u1ed9 M kh\u00f4i ph\u1ee5c kho\u1ea3ng 15% d\u1eef li\u1ec7u b\u1ecb h\u1ecfng. \u0110\u00e2y l\u00e0 c\u00e0i \u0111\u1eb7t m\u1eb7c \u0111\u1ecbnh ph\u1ed5 bi\u1ebfn cho danh thi\u1ebfp.<\/li>\n<li>C\u1ea5p \u0111\u1ed9 Q kh\u00f4i ph\u1ee5c kho\u1ea3ng 25% d\u1eef li\u1ec7u b\u1ecb h\u1ecfng. \u0110\u00e2y l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn t\u1ed1t cho nh\u1eefng th\u1ebb th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1ec3 trong v\u00ed.<\/li>\n<li>C\u1ea5p \u0111\u1ed9 H kh\u00f4i ph\u1ee5c kho\u1ea3ng 30% d\u1eef li\u1ec7u b\u1ecb h\u1ecfng. S\u1eed d\u1ee5ng n\u00f3 n\u1ebfu b\u1ea1n \u0111\u1eb7t logo \u1edf gi\u1eefa.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c c\u1ea5p \u0111\u1ed9 cao h\u01a1n th\u00eam nhi\u1ec1u m\u00f4-\u0111un h\u01a1n, do \u0111\u00f3 l\u01b0\u1edbi tr\u1edf n\u00ean d\u00e0y \u0111\u1eb7c h\u01a1n. N\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng C\u1ea5p \u0111\u1ed9 H cho logo \u1edf gi\u1eefa, h\u00e3y t\u0103ng k\u00edch th\u01b0\u1edbc in l\u00ean \u00edt nh\u1ea5t 1.0 x 1.0 inch (2.5 x 2.5 cm) v\u00e0 gi\u1eef logo nh\u1ecf, kho\u1ea3ng m\u1ed9t ph\u1ea7n n\u0103m chi\u1ec1u r\u1ed9ng c\u1ee7a m\u00e3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ch\u1ecdn Lo\u1ea1i Gi\u1ea5y v\u00e0 Ho\u00e0n Thi\u1ec7n Th\u1ebb<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ec1 m\u1eb7t th\u1ebb \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1ch \u00e1nh s\u00e1ng chi\u1ebfu t\u1edbi camera \u0111i\u1ec7n tho\u1ea1i. Gi\u1ea5y m\u1edd v\u00e0 kh\u00f4ng tr\u00e1ng ph\u1ee7 qu\u00e9t t\u1ed1t nh\u1ea5t v\u00ec ch\u00fang ph\u00e2n t\u00e1n \u00e1nh s\u00e1ng \u0111\u1ec1u.<\/p>\n\n\n\n<figure><img decoding=\"async\" src=\"https:\/\/staging.pageloot.com\/wp-content\/uploads\/2026\/09\/minimal-modern-illustration-square-format-white-background-with-blue-and-light-851-a9794c0805f9-94b22dd0784b.webp\" alt=\"th\u1ebb m\u1edd so v\u1edbi th\u1ebb b\u00f3ng\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1edbp ph\u1ee7 b\u00f3ng cao, l\u00e1 kim lo\u1ea1i v\u00e0 l\u1edbp laminate ph\u1ea3n quang t\u1ea1o ra \u0111\u1ed9 ch\u00f3i d\u01b0\u1edbi \u00e1nh \u0111\u00e8n s\u00e2n kh\u1ea5u, v\u00e0 \u0111\u1ed9 ch\u00f3i n\u00e0y l\u00e0m m\u1ea5t \u0111i \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n. N\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng l\u1edbp ho\u00e0n thi\u1ec7n \u0111\u1eb7c bi\u1ec7t, h\u00e3y gi\u1eef m\u00e3 tr\u00ean m\u1ed9t khu v\u1ef1c m\u1edd ph\u1eb3ng. Gi\u1eef m\u00e3 tr\u00e1nh xa c\u00e1c n\u1ebfp g\u1ea5p, g\u00f3c bo tr\u00f2n v\u00e0 c\u1ea1nh n\u01a1i ng\u00f3n tay c\u00e1i gi\u1eef th\u1ebb.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ki\u1ec3m tra M\u00e3 QR tr\u00ean Danh thi\u1ebfp c\u1ee7a b\u1ea1n tr\u01b0\u1edbc khi in<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>In b\u1ea3n th\u1eed nghi\u1ec7m tr\u00ean ch\u1ea5t li\u1ec7u danh thi\u1ebfp th\u1eadt v\u1edbi t\u1ef7 l\u1ec7 100%. \u0110\u1eebng \u0111\u00e1nh gi\u00e1 m\u00e3 tr\u00ean m\u00e0n h\u00ecnh.<\/li>\n<li>Qu\u00e9t b\u1eb1ng \u00edt nh\u1ea5t m\u1ed9t \u0111i\u1ec7n tho\u1ea1i iPhone v\u00e0 m\u1ed9t \u0111i\u1ec7n tho\u1ea1i Android.<\/li>\n<li>Qu\u00e9t trong \u00e1nh s\u00e1ng ban ng\u00e0y v\u00e0 trong ph\u00f2ng thi\u1ebfu s\u00e1ng.<\/li>\n<li>Qu\u00e9t t\u1eeb kho\u1ea3ng 4 inch (10 cm) v\u00e0 t\u1eeb kho\u1ea3ng 10 inch (25 cm).<\/li>\n<li>M\u1edf trang \u0111\u00edch b\u1eb1ng d\u1eef li\u1ec7u di \u0111\u1ed9ng v\u00e0 x\u00e1c nh\u1eadn r\u1eb1ng trang t\u1ea3i nhanh.<\/li>\n<li>Ch\u1ec9 sau \u0111\u00f3 m\u1edbi \u0111\u1eb7t in s\u1ed1 l\u01b0\u1ee3ng l\u1edbn.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">M\u00e3 QR tr\u00ean Danh thi\u1ebfp kh\u00f4ng qu\u00e9t \u0111\u01b0\u1ee3c? Ki\u1ec3m tra nh\u1eefng \u0111i\u1ec1u sau<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u00e3 nh\u1ecf h\u01a1n 0.6 inch (1.5 cm), ho\u1eb7c li\u00ean k\u1ebft d\u00e0i v\u00e0 c\u00e1c m\u00f4-\u0111un qu\u00e1 nh\u1ecf. Ph\u00f3ng to m\u00e3 ho\u1eb7c r\u00fat ng\u1eafn li\u00ean k\u1ebft.<\/li>\n<li>V\u0103n b\u1ea3n ho\u1eb7c \u0111\u01b0\u1eddng vi\u1ec1n n\u1eb1m trong v\u00f9ng y\u00ean t\u0129nh. Di chuy\u1ec3n n\u00f3 ra xa \u00edt nh\u1ea5t b\u1ed1n m\u00f4-\u0111un.<\/li>\n<li>\u0110\u1ed9 t\u01b0\u01a1ng ph\u1ea3n qu\u00e1 th\u1ea5p ho\u1eb7c m\u00e0u s\u1eafc b\u1ecb \u0111\u1ea3o ng\u01b0\u1ee3c. S\u1eed d\u1ee5ng c\u00e1c m\u00f4-\u0111un t\u1ed1i tr\u00ean n\u1ec1n s\u00e1ng.<\/li>\n<li>T\u1ec7p l\u00e0 h\u00ecnh \u1ea3nh c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u1ea5p. In l\u1ea1i t\u1eeb t\u1ec7p vector ho\u1eb7c PNG 300 DPI \u1edf k\u00edch th\u01b0\u1edbc cu\u1ed1i c\u00f9ng.<\/li>\n<li>B\u1ecb ch\u00f3i t\u1eeb l\u1edbp ho\u00e0n thi\u1ec7n b\u00f3ng ho\u1eb7c tr\u00e1ng b\u1ea1c. Di chuy\u1ec3n m\u00e3 \u0111\u1ebfn khu v\u1ef1c m\u1edd.<\/li>\n<li>Li\u00ean k\u1ebft \u0111\u00edch sai ho\u1eb7c trang t\u1ea3i ch\u1eadm. M\u1edf li\u00ean k\u1ebft tr\u00ean \u0111i\u1ec7n tho\u1ea1i c\u1ee7a b\u1ea1n v\u00e0 s\u1eeda l\u1ed7i.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00e3 QR c\u00f3 k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p bi\u1ebfn danh thi\u1ebfp c\u1ee7a b\u1ea1n th\u00e0nh c\u1ea7u n\u1ed1i \u0111\u00e1ng tin c\u1eady gi\u1eefa m\u1ed9t c\u00e1i b\u1eaft tay v\u00e0 h\u1ed3 s\u01a1 tr\u1ef1c tuy\u1ebfn c\u1ee7a b\u1ea1n. Gi\u1eef m\u00e3 \u1edf k\u00edch th\u01b0\u1edbc 0.8 x 0.8 inch tr\u1edf l\u00ean, b\u1ea3o v\u1ec7 v\u00f9ng y\u00ean t\u0129nh v\u00e0 in t\u1eeb c\u00e1c t\u1ec7p vector s\u1ea1ch. \u0110\u1ec3 t\u1ea1o v\u00e0 ki\u1ec3m tra danh thi\u1ebfp ti\u1ebfp theo c\u1ee7a b\u1ea1n, h\u00e3y s\u1eed d\u1ee5ng Pageloot <a href=\"https:\/\/pageloot.com\/vi\/qr-code-generator\/\">tr\u00ecnh t\u1ea1o m\u00e3 QR<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\n<div class=\"schema-faq\"><div class=\"schema-faq-section\" id=\"faq-question-000000000001\"><strong class=\"schema-faq-question\">M\u00e3 QR c\u1ea7n c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn nh\u01b0 th\u1ebf n\u00e0o tr\u00ean danh thi\u1ebfp?<\/strong> <p class=\"schema-faq-answer\">K\u00edch th\u01b0\u1edbc \u0111\u1ec1 xu\u1ea5t l\u00e0 0.8 x 0.8 inch (2 x 2 cm). K\u00edch th\u01b0\u1edbc n\u00e0y qu\u00e9t nhanh tr\u00ean c\u00e1c \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh hi\u1ec7n t\u1ea1i t\u1eeb kho\u1ea3ng c\u00e1ch c\u1ea7m th\u00f4ng th\u01b0\u1eddng. S\u1eed d\u1ee5ng 1 inch (2.5 cm) tr\u1edf l\u00ean n\u1ebfu m\u00e3 ch\u1ee9a nhi\u1ec1u d\u1eef li\u1ec7u ho\u1eb7c c\u00f3 logo.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-000000000002\"><strong class=\"schema-faq-question\">K\u00edch th\u01b0\u1edbc nh\u1ecf nh\u1ea5t cho m\u00e3 QR danh thi\u1ebfp l\u00e0 bao nhi\u00eau?<\/strong> <p class=\"schema-faq-answer\">K\u00edch th\u01b0\u1edbc nh\u1ecf nh\u1ea5t kho\u1ea3ng 0.6 x 0.6 inch (1.5 x 1.5 cm). N\u00f3 ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng v\u1edbi li\u00ean k\u1ebft ng\u1eafn, \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n cao, v\u00f9ng y\u00ean t\u0129nh r\u00f5 r\u00e0ng v\u00e0 b\u1ea3n in s\u1eafc n\u00e9t. \u0110\u1ed1i v\u1edbi \u0111i\u1ec7n tho\u1ea1i \u0111\u1eddi c\u0169, h\u00e3y gi\u1eef m\u00e3 \u1edf k\u00edch th\u01b0\u1edbc 0.8 inch (2 cm) ho\u1eb7c l\u1edbn h\u01a1n.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-000000000003\"><strong class=\"schema-faq-question\">M\u00e3 QR c\u00f3 th\u1ec3 nh\u1ecf \u0111\u1ebfn m\u1ee9c n\u00e0o tr\u00ean danh thi\u1ebfp?<\/strong> <p class=\"schema-faq-answer\">Kho\u1ea3ng 0.6 inch (1.5 cm) m\u1ed7i c\u1ea1nh trong tr\u01b0\u1eddng h\u1ee3p t\u1ed1t nh\u1ea5t. Nh\u1ecf h\u01a1n th\u1ebf, h\u1ea7u h\u1ebft camera \u0111i\u1ec7n tho\u1ea1i kh\u00f4ng th\u1ec3 l\u1ea5y n\u00e9t v\u00e0o th\u1ebb \u0111\u01b0\u1ee3c gi\u1eef \u1edf kho\u1ea3ng c\u00e1ch b\u00ecnh th\u01b0\u1eddng. R\u00fat ng\u1eafn li\u00ean k\u1ebft l\u00e0m cho c\u00e1c \u00f4 vu\u00f4ng l\u1edbn h\u01a1n v\u00e0 gi\u00fap c\u00e1c m\u00e3 nh\u1ecf qu\u00e9t \u0111\u01b0\u1ee3c.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-000000000004\"><strong class=\"schema-faq-question\">T\u00f4i c\u00f3 th\u1ec3 \u0111\u1eb7t logo c\u00f4ng ty v\u00e0o gi\u1eefa m\u00e3 QR danh thi\u1ebfp nh\u1ecf kh\u00f4ng?<\/strong> <p class=\"schema-faq-answer\">C\u00f3, nh\u01b0ng h\u00e3y s\u1eed d\u1ee5ng s\u1eeda l\u1ed7i c\u1ea5p \u0111\u1ed9 H \u0111\u1ec3 m\u00e3 c\u00f3 th\u1ec3 kh\u00f4i ph\u1ee5c d\u1eef li\u1ec7u \u1ea9n. C\u1ea5p \u0111\u1ed9 H b\u1ed5 sung c\u00e1c m\u00f4-\u0111un, v\u00ec v\u1eady h\u00e3y ph\u00f3ng to m\u00e3 \u00edt nh\u1ea5t 1.0 x 1.0 inch (2.5 cm) v\u00e0 gi\u1eef logo nh\u1ecf.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-000000000005\"><strong class=\"schema-faq-question\">T\u1ea1i sao m\u00e3 QR tr\u00ean danh thi\u1ebfp c\u1ee7a t\u00f4i kh\u00f4ng qu\u00e9t \u0111\u01b0\u1ee3c sau khi in?<\/strong> <p class=\"schema-faq-answer\">C\u00e1c nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn l\u00e0 v\u00f9ng tr\u1ed1ng qu\u00e1 nh\u1ecf, \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n m\u00e0u th\u1ea5p, t\u1ec7p c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u1ea5p, ch\u00f3i t\u1eeb b\u1ec1 m\u1eb7t b\u00f3ng ho\u1eb7c m\u00e3 qu\u00e1 nh\u1ecf. H\u00e3y ki\u1ec3m tra t\u1eebng nguy\u00ean nh\u00e2n tr\u00ean b\u1ea3n in th\u1eed v\u00e0 kh\u1eafc ph\u1ee5c tr\u01b0\u1edbc l\u1ea7n in ti\u1ebfp theo.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-000000000006\"><strong class=\"schema-faq-question\">M\u00e3 QR tr\u00ean danh thi\u1ebfp l\u00e0 t\u1ed1t hay x\u1ea5u?<\/strong> <p class=\"schema-faq-answer\">Ch\u00fang t\u1ed1t khi m\u00e3 c\u00f3 k\u00edch th\u01b0\u1edbc \u00edt nh\u1ea5t 0,8 inch, qu\u00e9t d\u1ec5 d\u00e0ng v\u00e0 m\u1edf ra m\u1ed9t trang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho \u0111i\u1ec7n tho\u1ea1i. Ch\u00fang t\u1ec7 khi m\u00e3 qu\u00e1 nh\u1ecf, kh\u00f3 qu\u00e9t ho\u1eb7c d\u1eabn \u0111\u1ebfn li\u00ean k\u1ebft b\u1ecb h\u1ecfng. Lu\u00f4n ki\u1ec3m tra b\u1ea3n in th\u1eed.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-000000000007\"><strong class=\"schema-faq-question\">T\u00f4i n\u00ean d\u00f9ng m\u00e3 QR t\u0129nh hay \u0111\u1ed9ng tr\u00ean danh thi\u1ebfp?<\/strong> <p class=\"schema-faq-answer\">M\u00e3 t\u0129nh l\u00e0 \u0111\u1ee7 n\u1ebfu li\u00ean k\u1ebft s\u1ebd kh\u00f4ng bao gi\u1edd thay \u0111\u1ed5i v\u00e0 m\u00e3 t\u0129nh kh\u00f4ng bao gi\u1edd h\u1ebft h\u1ea1n. M\u00e3 \u0111\u1ed9ng \u0111\u00e1ng gi\u00e1 n\u1ebfu b\u1ea1n c\u00f3 th\u1ec3 thay \u0111\u1ed5i c\u00f4ng vi\u1ec7c, trang web ho\u1eb7c trang li\u00ean h\u1ec7, v\u00ec b\u1ea1n c\u00f3 th\u1ec3 ch\u1ec9nh s\u1eeda \u0111\u00edch \u0111\u1ebfn m\u00e0 kh\u00f4ng c\u1ea7n in l\u1ea1i. M\u00e3 \u0111\u1ed9ng c\u1ee7a Pageloot \u0111i k\u00e8m v\u1edbi b\u1ea3n d\u00f9ng th\u1eed mi\u1ec5n ph\u00ed 14 ng\u00e0y v\u00e0 c\u00e1c g\u00f3i d\u1ecbch v\u1ee5 \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea t\u1ea1i pageloot.com\/pricing.<\/p> <\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Kh\u00e1m ph\u00e1 k\u00edch th\u01b0\u1edbc m\u00e3 QR l\u00fd t\u01b0\u1edfng cho danh thi\u1ebfp. T\u00ecm hi\u1ec3u c\u00e1c k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb, gi\u1edbi h\u1ea1n k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u v\u00e0 ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o qu\u00e9t \u0111\u00e1ng tin c\u1eady.<\/p>","protected":false},"author":17,"featured_media":56396,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[2635],"tags":[],"class_list":["post-42239","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 v28.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Minimum QR Code Size for Business Cards (0.6 Inch)<\/title>\n<meta name=\"description\" content=\"The minimum QR code size on a business card is 0.6 x 0.6 inches (1.5 cm). See the safe 0.8 inch size, print rules and a test checklist.\" \/>\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\/best-qr-code-sizes-for-business-cards\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Minimum QR Code Size for Business Cards (0.6 Inch)\" \/>\n<meta property=\"og:description\" content=\"The minimum QR code size on a business card is 0.6 x 0.6 inches (1.5 cm). See the safe 0.8 inch size, print rules and a test checklist.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pageloot.com\/vi\/blog\/best-qr-code-sizes-for-business-cards\/\" \/>\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=\"2025-07-20T02:38:39+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-23T06:01:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/09\/qr-code-scanning-6b81e4-02d233ef29c1.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:title\" content=\"Guidelines for QR Code Sizes on Business Cards\" \/>\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=\"10 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/best-qr-code-sizes-for-business-cards\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/best-qr-code-sizes-for-business-cards\\\/\"},\"author\":{\"name\":\"Siim T\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#\\\/schema\\\/person\\\/fa28992c2e52546f0812833bac852dfe\"},\"headline\":\"Guidelines for QR Code Sizes on Business Cards\",\"datePublished\":\"2025-07-20T02:38:39+00:00\",\"dateModified\":\"2026-10-23T06:01:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/best-qr-code-sizes-for-business-cards\\\/\"},\"wordCount\":1999,\"publisher\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/best-qr-code-sizes-for-business-cards\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/qr-code-scanning-6b81e4-02d233ef29c1.webp\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"vi\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/best-qr-code-sizes-for-business-cards\\\/\",\"url\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/best-qr-code-sizes-for-business-cards\\\/\",\"name\":\"Minimum QR Code Size for Business Cards (0.6 Inch)\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/best-qr-code-sizes-for-business-cards\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/best-qr-code-sizes-for-business-cards\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/qr-code-scanning-6b81e4-02d233ef29c1.webp\",\"datePublished\":\"2025-07-20T02:38:39+00:00\",\"dateModified\":\"2026-10-23T06:01:00+00:00\",\"description\":\"The minimum QR code size on a business card is 0.6 x 0.6 inches (1.5 cm). 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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\/best-qr-code-sizes-for-business-cards\/#faq-question-000000000001","position":1,"url":"https:\/\/pageloot.com\/blog\/best-qr-code-sizes-for-business-cards\/#faq-question-000000000001","name":"M\u00e3 QR c\u1ea7n c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn nh\u01b0 th\u1ebf n\u00e0o tr\u00ean danh thi\u1ebfp?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Plan for 0.8 x 0.8 inches (2 x 2 cm). This size scans quickly on current smartphones from a normal holding distance. Use 1 inch (2.5 cm) or more if the code holds a lot of data or a logo.","inLanguage":"vi"},"inLanguage":"vi"},{"@type":"Question","@id":"https:\/\/pageloot.com\/blog\/best-qr-code-sizes-for-business-cards\/#faq-question-000000000002","position":2,"url":"https:\/\/pageloot.com\/blog\/best-qr-code-sizes-for-business-cards\/#faq-question-000000000002","name":"K\u00edch th\u01b0\u1edbc nh\u1ecf nh\u1ea5t cho m\u00e3 QR danh thi\u1ebfp l\u00e0 bao nhi\u00eau?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The smallest size is about 0.6 x 0.6 inches (1.5 x 1.5 cm). It works only with a short link, high contrast, a clear quiet zone and a sharp print. For older phones, keep the code at 0.8 inches (2 cm) or larger.","inLanguage":"vi"},"inLanguage":"vi"},{"@type":"Question","@id":"https:\/\/pageloot.com\/blog\/best-qr-code-sizes-for-business-cards\/#faq-question-000000000003","position":3,"url":"https:\/\/pageloot.com\/blog\/best-qr-code-sizes-for-business-cards\/#faq-question-000000000003","name":"M\u00e3 QR c\u00f3 th\u1ec3 nh\u1ecf \u0111\u1ebfn m\u1ee9c n\u00e0o tr\u00ean danh thi\u1ebfp?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"About 0.6 inches (1.5 cm) per side in the best case. Smaller than that, most phone cameras cannot focus on a card held at a normal distance. Shortening the link makes the squares bigger and helps small codes scan.","inLanguage":"vi"},"inLanguage":"vi"},{"@type":"Question","@id":"https:\/\/pageloot.com\/blog\/best-qr-code-sizes-for-business-cards\/#faq-question-000000000004","position":4,"url":"https:\/\/pageloot.com\/blog\/best-qr-code-sizes-for-business-cards\/#faq-question-000000000004","name":"T\u00f4i c\u00f3 th\u1ec3 \u0111\u1eb7t logo c\u00f4ng ty v\u00e0o gi\u1eefa m\u00e3 QR danh thi\u1ebfp nh\u1ecf kh\u00f4ng?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, but use Level H error correction so the code can recover the hidden data. Level H adds modules, so enlarge the code to at least 1.0 x 1.0 inch (2.5 cm) and keep the logo small.","inLanguage":"vi"},"inLanguage":"vi"},{"@type":"Question","@id":"https:\/\/pageloot.com\/blog\/best-qr-code-sizes-for-business-cards\/#faq-question-000000000005","position":5,"url":"https:\/\/pageloot.com\/blog\/best-qr-code-sizes-for-business-cards\/#faq-question-000000000005","name":"T\u1ea1i sao m\u00e3 QR tr\u00ean danh thi\u1ebfp c\u1ee7a t\u00f4i kh\u00f4ng qu\u00e9t \u0111\u01b0\u1ee3c sau khi in?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Common causes are a quiet zone that is too small, low color contrast, a low-resolution file, glare from a glossy finish or a code that is too small. Check each one on the printed proof and fix it before the next print run.","inLanguage":"vi"},"inLanguage":"vi"},{"@type":"Question","@id":"https:\/\/pageloot.com\/blog\/best-qr-code-sizes-for-business-cards\/#faq-question-000000000006","position":6,"url":"https:\/\/pageloot.com\/blog\/best-qr-code-sizes-for-business-cards\/#faq-question-000000000006","name":"M\u00e3 QR tr\u00ean danh thi\u1ebfp l\u00e0 t\u1ed1t hay x\u1ea5u?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"They are good when the code is at least 0.8 inches, scans well and opens a page made for phones. They are bad when the code is tiny, hard to scan or leads to a broken link. Always test a printed proof.","inLanguage":"vi"},"inLanguage":"vi"},{"@type":"Question","@id":"https:\/\/pageloot.com\/blog\/best-qr-code-sizes-for-business-cards\/#faq-question-000000000007","position":7,"url":"https:\/\/pageloot.com\/blog\/best-qr-code-sizes-for-business-cards\/#faq-question-000000000007","name":"T\u00f4i n\u00ean d\u00f9ng m\u00e3 QR t\u0129nh hay \u0111\u1ed9ng tr\u00ean danh thi\u1ebfp?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A static code is enough if the link will never change, and static codes never expire. A dynamic code is worth it if you may change jobs, websites or contact pages, because you can edit the destination without reprinting. Pageloot dynamic codes come with a 14-day free trial, and plans are listed at pageloot.com\/pricing.","inLanguage":"vi"},"inLanguage":"vi"}]}},"_links":{"self":[{"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/42239","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=42239"}],"version-history":[{"count":12,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/42239\/revisions"}],"predecessor-version":[{"id":56953,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/posts\/42239\/revisions\/56953"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/media\/56396"}],"wp:attachment":[{"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/media?parent=42239"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/categories?post=42239"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pageloot.com\/vi\/wp-json\/wp\/v2\/tags?post=42239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}