{"id":45562,"date":"2025-08-30T05:47:39","date_gmt":"2025-08-30T05:47:39","guid":{"rendered":"https:\/\/staging.pageloot.com\/uncategorized\/9-qr-code-design-tips-for-better-scans\/"},"modified":"2026-04-22T13:14:08","modified_gmt":"2026-04-22T13:14:08","slug":"9-qr-code-design-tips-for-better-scans","status":"publish","type":"post","link":"https:\/\/pageloot.com\/vi\/blog\/9-qr-code-design-tips-for-better-scans\/","title":{"rendered":"C\u00e1ch thi\u1ebft k\u1ebf m\u00e3 QR \u0111\u1ec3 qu\u00e9t \u0111\u00e1ng tin c\u1eady"},"content":{"rendered":"<p class=\"wp-block-paragraph\">M\u00e3 QR t\u00f9y ch\u1ec9nh c\u1ee7a b\u1ea1n c\u00f3 \u0111ang g\u1eb7p l\u1ed7i khi qu\u00e9t trong th\u1ebf gi\u1edbi th\u1ef1c kh\u00f4ng? Khi m\u1ed9t m\u00e3 c\u00f3 th\u01b0\u01a1ng hi\u1ec7u kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng, n\u00f3 s\u1ebd g\u00e2y kh\u00f3 ch\u1ecbu cho kh\u00e1ch h\u00e0ng v\u00e0 l\u00e0m t\u1ed5n h\u1ea1i \u0111\u1ebfn uy t\u00edn c\u1ee7a b\u1ea1n. H\u01b0\u1edbng d\u1eabn n\u00e0y gi\u1ea3i th\u00edch c\u00e1ch c\u00e2n b\u1eb1ng gi\u1eefa vi\u1ec7c x\u00e2y d\u1ef1ng th\u01b0\u01a1ng hi\u1ec7u v\u00e0 \u0111\u1ed9 tin c\u1eady k\u1ef9 thu\u1eadt \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ecdi l\u1ea7n qu\u00e9t \u0111\u1ec1u th\u00e0nh c\u00f4ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a kh\u1ea3 n\u0103ng qu\u00e9t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L\u00fd do ph\u1ed5 bi\u1ebfn nh\u1ea5t khi\u1ebfn m\u00e3 QR b\u1ecb l\u1ed7i l\u00e0 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n kh\u00f4ng \u0111\u1ee7 gi\u1eefa ti\u1ec1n c\u1ea3nh v\u00e0 h\u1eadu c\u1ea3nh. M\u00e1y qu\u00e9t ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch \u0111o s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u0111\u1ed9 ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng; ch\u00fang c\u1ea7n ph\u00e2n bi\u1ec7t c\u00e1c m\u00f4-\u0111un t\u1ed1i v\u1edbi c\u00e1c v\u00f9ng s\u00e1ng \u0111\u1ec3 gi\u1ea3i m\u00e3 d\u1eef li\u1ec7u. M\u1eb7c d\u00f9 m\u00e0u \u0111en tr\u00ean n\u1ec1n tr\u1eafng cung c\u1ea5p t\u1ef7 l\u1ec7 t\u01b0\u01a1ng ph\u1ea3n t\u1ed1i \u0111a l\u00e0 21:1, b\u1ea1n v\u1eabn c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u00e0u s\u1eafc th\u01b0\u01a1ng hi\u1ec7u m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 n\u1ebfu duy tr\u00ec t\u1ef7 l\u1ec7 t\u1ed1i thi\u1ec3u l\u00e0 4.5:1 cho c\u00e1c m\u00e3 nh\u1ecf h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n v\u1eabn ho\u1ea1t \u0111\u1ed9ng, h\u00e3y lu\u00f4n s\u1eed d\u1ee5ng m\u00e0u t\u1ed1i cho c\u00e1c m\u00f4-\u0111un v\u00e0 m\u00e0u s\u00e1ng cho n\u1ec1n. M\u00e1y qu\u00e9t \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho c\u1ea5u h\u00ecnh n\u00e0y, v\u00e0 m\u1eb7c d\u00f9 m\u1ed9t s\u1ed1 \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh hi\u1ec7n \u0111\u1ea1i c\u00f3 th\u1ec3 \u0111\u1ecdc m\u00e3 \u0111\u1ea3o ng\u01b0\u1ee3c, nhi\u1ec1u thi\u1ebft b\u1ecb c\u0169 h\u01a1n ho\u1eb7c \u1ee9ng d\u1ee5ng c\u1ee7a b\u00ean th\u1ee9 ba s\u1ebd ho\u00e0n to\u00e0n kh\u00f4ng \u0111\u1ecdc \u0111\u01b0\u1ee3c. B\u1ea1n c\u0169ng n\u00ean tr\u00e1nh c\u00e1c hi\u1ec7u \u1ee9ng chuy\u1ec3n m\u00e0u (gradient) v\u00e0 \u0111\u1ed5 b\u00f3ng (shadow), v\u00ec ch\u00fang t\u1ea1o ra c\u00e1c t\u00f4ng m\u00e0u trung gian g\u00e2y nh\u1ea7m l\u1eabn cho c\u1ea3m bi\u1ebfn ph\u00e1t hi\u1ec7n c\u1ea1nh c\u1ee7a m\u00e1y \u1ea3nh. \u0110\u1ec3 t\u00ecm hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 l\u1ef1a ch\u1ecdn m\u00e0u s\u1eafc, h\u00e3y xem h\u01b0\u1edbng d\u1eabn c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <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> tr\u01b0\u1edbc khi ho\u00e0n thi\u1ec7n t\u00e0i li\u1ec7u ti\u1ebfp th\u1ecb c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0110i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc m\u00e3 QR c\u1ee7a b\u1ea1n cho kho\u1ea3ng c\u00e1ch v\u00e0 kh\u1ea3 n\u0103ng hi\u1ec3n th\u1ecb<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">K\u00edch th\u01b0\u1edbc l\u00e0 m\u1ed9t y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh b\u1edfi v\u1eadt l\u00fd c\u1ee7a \u1ed1ng k\u00ednh m\u00e1y \u1ea3nh. M\u1ed9t m\u00e3 qu\u00e1 nh\u1ecf so v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u1ee7a n\u00f3 s\u1ebd xu\u1ea5t hi\u1ec7n m\u1edd, khi\u1ebfn ph\u1ea7n m\u1ec1m kh\u00f4ng th\u1ec3 t\u00e1ch bi\u1ec7t c\u00e1c m\u00f4-\u0111un ri\u00eang l\u1ebb. \u0110\u1ec3 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc ch\u00ednh x\u00e1c, h\u00e3y tu\u00e2n theo t\u1ef7 l\u1ec7 kho\u1ea3ng c\u00e1ch-\u0111\u1ebfn-k\u00edch th\u01b0\u1edbc 10:1. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 n\u1ebfu ng\u01b0\u1eddi d\u00f9ng \u0111ang qu\u00e9t m\u1ed9t t\u1edd r\u01a1i t\u1eeb kho\u1ea3ng c\u00e1ch 20 inch, m\u00e3 QR ph\u1ea3i r\u1ed9ng \u00edt nh\u1ea5t 2 inch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c t\u00e0i li\u1ec7u t\u1ea7m g\u1ea7n nh\u01b0 danh thi\u1ebfp, k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u th\u1ef1c t\u1ebf l\u00e0 1 x 1 cm, m\u1eb7c d\u00f9 2 x 2 cm \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb \u0111\u1ec3 t\u01b0\u01a1ng th\u00edch ph\u1ed5 bi\u1ebfn. M\u1eadt \u0111\u1ed9 d\u1eef li\u1ec7u c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng qu\u00e9t; b\u1ea1n c\u00e0ng m\u00e3 h\u00f3a nhi\u1ec1u th\u00f4ng tin, m\u1eabu m\u00e3 c\u00e0ng tr\u1edf n\u00ean \u201c\u0111\u00f4ng \u0111\u00fac\u201d. B\u1ea1n c\u00f3 th\u1ec3 gi\u1eef m\u00e3 c\u1ee7a m\u00ecnh \u0111\u01a1n gi\u1ea3n v\u1ec1 m\u1eb7t h\u00ecnh \u1ea3nh v\u00e0 d\u1ec5 qu\u00e9t h\u01a1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t <a href=\"https:\/\/pageloot.com\/vi\/dynamic-qr-code-generator\/\">tr\u00ecnh t\u1ea1o m\u00e3 QR \u0111\u1ed9ng<\/a>. C\u00f4ng c\u1ee5 n\u00e0y t\u1ea1o ra m\u1ed9t URL chuy\u1ec3n h\u01b0\u1edbng ng\u1eafn, gi\u00fap t\u1ea1o ra m\u1ed9t m\u1eabu m\u00e3 s\u1ea1ch h\u01a1n, ho\u1ea1t \u0111\u1ed9ng t\u1ed1t h\u01a1n ngay c\u1ea3 \u1edf k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/03\/simple-clean-infographic-aspect-ratio-1-1-white-background-with-black-text-bl-1811-f0fdde0bb895.webp\" alt=\"H\u01b0\u1edbng d\u1eabn k\u00edch th\u01b0\u1edbc QR\" \/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>S\u1eb5n s\u00e0ng thi\u1ebft k\u1ebf c\u1ee7a ri\u00eang b\u1ea1n?<\/strong> B\u1eaft \u0111\u1ea7u s\u1eed d\u1ee5ng <a href=\"https:\/\/pageloot.com\/vi\/qr-code-generator-with-logo\/\">tr\u00ecnh t\u1ea1o m\u00e3 QR chuy\u00ean nghi\u1ec7p c\u00f3 logo<\/a> c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ec3 t\u1ea1o ra c\u00e1c m\u00e3 c\u00f3 th\u01b0\u01a1ng hi\u1ec7u, \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n cao, ho\u1ea1t \u0111\u1ed9ng tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb di \u0111\u1ed9ng.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">T\u00edch h\u1ee3p logo m\u00e0 kh\u00f4ng l\u00e0m h\u1ecfng ch\u1ee9c n\u0103ng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u00eam logo l\u00e0 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 \u0111\u1ec3 t\u0103ng nh\u1eadn di\u1ec7n th\u01b0\u01a1ng hi\u1ec7u l\u00ean t\u1edbi 80% v\u00e0 c\u00f3 th\u1ec3 t\u0103ng t\u1ef7 l\u1ec7 qu\u00e9t l\u00ean g\u1ea7n 18%. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c nh\u1edd t\u00ednh n\u0103ng s\u1eeda l\u1ed7i Reed-Solomon, m\u1ed9t t\u00ednh n\u0103ng k\u1ef9 thu\u1eadt cho ph\u00e9p m\u00e3 v\u1eabn c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c ngay c\u1ea3 khi m\u1ed9t ph\u1ea7n c\u1ee7a n\u00f3 b\u1ecb che ho\u1eb7c h\u01b0 h\u1ecfng. Khi b\u1ea1n nh\u00fang logo, b\u1ea1n ph\u1ea3i \u0111\u1eb7t m\u1ee9c s\u1eeda l\u1ed7i th\u00e0nh C\u1ea5p Q (kh\u00f4i ph\u1ee5c 25%) ho\u1eb7c C\u1ea5p H (kh\u00f4i ph\u1ee5c 30%) \u0111\u1ec3 b\u00f9 \u0111\u1eafp cho c\u00e1c m\u00f4-\u0111un d\u1eef li\u1ec7u b\u1ecb che khu\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 duy tr\u00ec ch\u1ee9c n\u0103ng, logo c\u1ee7a b\u1ea1n n\u00ean \u0111\u01b0\u1ee3c c\u0103n gi\u1eefa v\u00e0 chi\u1ebfm kh\u00f4ng qu\u00e1 25% \u0111\u1ebfn 30% t\u1ed5ng di\u1ec7n t\u00edch. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i b\u1ea3o v\u1ec7 c\u00e1c m\u1eabu \u0111\u1ecbnh v\u1ecb g\u00f3c \u2013 ba h\u00ecnh vu\u00f4ng l\u1edbn \u0111\u00f3ng vai tr\u00f2 l\u00e0 \u201cm\u1eaft\u201d c\u1ee7a m\u00e3. N\u1ebfu nh\u1eefng ph\u1ea7n n\u00e0y b\u1ecb che khu\u1ea5t, m\u00e1y qu\u00e9t kh\u00f4ng th\u1ec3 \u0111\u1ecbnh h\u01b0\u1edbng h\u00ecnh \u1ea3nh. \u0110\u1ec3 bi\u1ebft c\u00e1c m\u1eb9o \u0111\u1eb7t v\u1ecb tr\u00ed c\u1ee5 th\u1ec3, h\u00e3y xem h\u01b0\u1edbng d\u1eabn chi ti\u1ebft c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/pageloot.com\/vi\/blog\/how-to-add-logos-to-qr-codes\/\">c\u00e1ch th\u00eam logo v\u00e0o m\u00e3 QR<\/a> \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o th\u01b0\u01a1ng hi\u1ec7u c\u1ee7a b\u1ea1n kh\u00f4ng ch\u1eb7n c\u00e1c \u0111i\u1ec3m d\u1eef li\u1ec7u quan tr\u1ecdng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea7m quan tr\u1ecdng c\u1ee7a V\u00f9ng y\u00ean t\u0129nh<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00f9ng y\u00ean t\u0129nh l\u00e0 \u0111\u01b0\u1eddng vi\u1ec1n r\u00f5 r\u00e0ng bao quanh m\u00e3 QR, ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t v\u00f9ng \u0111\u1ec7m. Kho\u1ea3ng tr\u1ed1ng n\u00e0y cho m\u00e1y qu\u00e9t bi\u1ebft \u0111\u1ec3 b\u1ecf qua v\u0103n b\u1ea3n, h\u00ecnh \u1ea3nh ho\u1eb7c \u0111\u1ed3 h\u1ecda bao b\u00ec g\u1ea7n \u0111\u00f3. Theo ti\u00eau chu\u1ea9n ISO\/IEC 18004, 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\u00ed d\u1ee5, n\u1ebfu c\u00e1c m\u00f4-\u0111un c\u1ee7a b\u1ea1n r\u1ed9ng 2 mm, b\u1ea1n c\u1ea7n m\u1ed9t l\u1ec1 tr\u1ed1ng 8 mm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu kh\u00f4ng c\u00f3 v\u00f9ng y\u00ean t\u0129nh \u0111\u1ea7y \u0111\u1ee7, ph\u1ea7n m\u1ec1m qu\u00e9t c\u00f3 th\u1ec3 kh\u00f4ng t\u00e1ch \u0111\u01b0\u1ee3c m\u00e3 QR kh\u1ecfi thi\u1ebft k\u1ebf xung quanh, d\u1eabn \u0111\u1ebfn l\u1ed7i \u201ckh\u00f4ng qu\u00e9t \u0111\u01b0\u1ee3c\u201d. \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng l\u1ed7i th\u01b0\u1eddng g\u1eb7p nh\u1ea5t trong thi\u1ebft k\u1ebf \u0111\u1ed3 h\u1ecda chuy\u00ean nghi\u1ec7p, khi m\u00e3 \u0111\u01b0\u1ee3c \u0111\u1eb7t qu\u00e1 g\u1ea7n m\u00e9p trang ho\u1eb7c ch\u1ed3ng l\u00ean c\u00e1c h\u1ecda ti\u1ebft n\u1ec1n. Vi\u1ec7c tu\u00e2n th\u1ee7 <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> \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c y\u1ebfu t\u1ed1 thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n kh\u00f4ng c\u1ea3n tr\u1edf kh\u1ea3 n\u0103ng kh\u00f3a m\u00e3 c\u1ee7a m\u00e1y qu\u00e9t.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/03\/simple-modern-illustration-aspect-ratio-1-1-white-background-with-black-text-864-345177e6d216.webp\" alt=\"V\u00f9ng y\u00ean t\u0129nh QR\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Ch\u1ea5t l\u01b0\u1ee3ng in v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 v\u1eadt li\u1ec7u c\u1ea7n c\u00e2n nh\u1eafc<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ea3n ph\u1ea9m v\u1eadt l\u00fd cu\u1ed1i c\u00f9ng c\u0169ng quan tr\u1ecdng nh\u01b0 thi\u1ebft k\u1ebf k\u1ef9 thu\u1eadt s\u1ed1. H\u00ecnh \u1ea3nh c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u1ea5p c\u00f3 th\u1ec3 tr\u00f4ng ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n h\u00ecnh nh\u01b0ng s\u1ebd b\u1ecb pixel h\u00f3a ho\u1eb7c m\u1edd khi in, \u0111i\u1ec1u n\u00e0y ng\u0103n m\u00e1y qu\u00e9t nh\u1eadn di\u1ec7n l\u01b0\u1edbi m\u00f4-\u0111un. Lu\u00f4n xu\u1ea5t thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n \u1edf \u0111\u1ecbnh d\u1ea1ng vector nh\u01b0 SVG, EPS ho\u1eb7c PDF \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9 s\u1eafc n\u00e9t \u1edf m\u1ecdi t\u1ef7 l\u1ec7.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c qu\u00e9t th\u00e0nh c\u00f4ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>  B\u1ec1 m\u1eb7t m\u1edd \u0111\u01b0\u1ee3c \u01b0u ti\u00ean h\u01a1n v\u1eadt li\u1ec7u b\u00f3ng v\u00ec ch\u00fang ng\u0103n ch\u1eb7n \u00e1nh s\u00e1ng ch\u00f3i c\u00f3 th\u1ec3 \u201cl\u00e0m m\u00f9\u201d c\u1ea3m bi\u1ebfn m\u00e1y \u1ea3nh.<\/li>\n<li>  B\u1ec1 m\u1eb7t ph\u1eb3ng l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 qu\u00e9t \u0111\u00e1ng tin c\u1eady, v\u00ec vi\u1ec7c \u0111\u1eb7t m\u00e3 l\u00ean b\u1ec1 m\u1eb7t cong nhi\u1ec1u nh\u01b0 chai ho\u1eb7c n\u1ebfp g\u1ea5p tr\u00ean bao b\u00ec c\u00f3 th\u1ec3 l\u00e0m bi\u1ebfn d\u1ea1ng m\u1eabu.<\/li>\n<li>  In DPI cao (\u00edt nh\u1ea5t 300 DPI) \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c c\u1ea1nh c\u1ee7a m\u1ed7i m\u00f4-\u0111un s\u1eafc n\u00e9t v\u00e0 r\u00f5 r\u00e0ng.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u in s\u1ed1 l\u01b0\u1ee3ng l\u1edbn, h\u00e3y s\u1eed d\u1ee5ng <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 t\u1ec7p c\u1ee7a b\u1ea1n \u0111\u1ea1t y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt.<\/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-2cccc4d86ab5\"><strong class=\"schema-faq-question\">K\u00edch th\u01b0\u1edbc nh\u1ecf nh\u1ea5t c\u1ee7a m\u00e3 QR c\u00f3 th\u1ec3 l\u00e0 bao nhi\u00eau?<\/strong> <p class=\"schema-faq-answer\">M\u1eb7c d\u00f9 k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt l\u00e0 kho\u1ea3ng 1 x 1 cm cho c\u00e1c m\u00e3 r\u1ea5t \u0111\u01a1n gi\u1ea3n, ch\u00fang t\u00f4i khuy\u00ean d\u00f9ng k\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u 2 x 2 cm (0.8 x 0.8 inch) cho h\u1ea7u h\u1ebft c\u00e1c t\u00e0i li\u1ec7u ti\u1ebfp th\u1ecb \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u00fang ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00e1c m\u1eabu \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh v\u00e0 \u0111i\u1ec1u ki\u1ec7n \u00e1nh s\u00e1ng kh\u00e1c nhau.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-3a8ee0e422e6\"><strong class=\"schema-faq-question\">T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u00e3 QR m\u00e0u s\u00e1ng tr\u00ean n\u1ec1n t\u1ed1i kh\u00f4ng?<\/strong> <p class=\"schema-faq-answer\">N\u00f3i chung l\u00e0 kh\u00f4ng n\u00ean. H\u1ea7u h\u1ebft c\u00e1c m\u00e1y qu\u00e9t \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh \u0111\u1ec3 t\u00ecm c\u00e1c m\u1eabu t\u1ed1i tr\u00ean n\u1ec1n s\u00e1ng. \u0110\u1ea3o ng\u01b0\u1ee3c m\u00e0u s\u1eafc (s\u00e1ng tr\u00ean n\u1ec1n t\u1ed1i) th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn l\u1ed7i qu\u00e9t, \u0111\u1eb7c bi\u1ec7t tr\u00ean c\u00e1c thi\u1ebft b\u1ecb c\u0169 h\u01a1n ho\u1eb7c trong m\u00f4i tr\u01b0\u1eddng thi\u1ebfu s\u00e1ng.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-a1176bc96ce6\"><strong class=\"schema-faq-question\">M\u00e3 QR \u0111\u1ed9ng c\u1ea3i thi\u1ec7n thi\u1ebft k\u1ebf c\u1ee7a t\u00f4i nh\u01b0 th\u1ebf n\u00e0o?<\/strong> <p class=\"schema-faq-answer\">M\u00e3 \u0111\u1ed9ng s\u1eed d\u1ee5ng m\u1ed9t URL ng\u1eafn, t\u1ea1o ra m\u1ed9t m\u1eabu \u0111\u01a1n gi\u1ea3n h\u01a1n, \u00edt d\u00e0y \u0111\u1eb7c h\u01a1n. \u0110i\u1ec1u n\u00e0y gi\u00fap m\u00e1y \u1ea3nh gi\u1ea3i m\u00e3 m\u00e3 d\u1ec5 d\u00e0ng h\u01a1n nhi\u1ec1u v\u00e0 cho ph\u00e9p b\u1ea1n in n\u00f3 \u1edf k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n so v\u1edbi m\u00e3 t\u0129nh ch\u1ee9a m\u1ed9t URL d\u00e0i, ph\u1ee9c t\u1ea1p.<\/p> <\/div> <\/div>\n\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 t\u1eadn d\u1ee5ng t\u1ed1i \u0111a c\u00e1c chi\u1ebfn d\u1ecbch c\u1ee7a b\u1ea1n, b\u1ea1n ph\u1ea3i k\u1ebft h\u1ee3p s\u1ef1 h\u1ea5p d\u1eabn v\u1ec1 m\u1eb7t h\u00ecnh \u1ea3nh v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt. B\u1eb1ng c\u00e1ch \u01b0u ti\u00ean \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n, t\u00f4n tr\u1ecdng v\u00f9ng y\u00ean t\u0129nh v\u00e0 th\u1eed nghi\u1ec7m m\u00e3 c\u1ee7a b\u1ea1n tr\u00ean v\u1eadt li\u1ec7u v\u1eadt l\u00fd, b\u1ea1n bi\u1ebfn m\u1ed9t \u0111\u1ed3 h\u1ecda \u0111\u01a1n gi\u1ea3n th\u00e0nh m\u1ed9t c\u1ed5ng m\u1ea1nh m\u1ebd \u0111\u1ec3 thu h\u00fat kh\u00e1ch h\u00e0ng. S\u1eed d\u1ee5ng Pageloot \u0111\u1ec3 qu\u1ea3n l\u00fd thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n v\u00e0 theo d\u00f5i th\u00e0nh c\u00f4ng c\u1ee7a b\u1ea1n trong th\u1eddi gian th\u1ef1c.<\/p>","protected":false},"excerpt":{"rendered":"<p>H\u1ecdc c\u00e1ch thi\u1ebft k\u1ebf m\u00e3 QR \u0111\u1ec3 qu\u00e9t \u0111\u00e1ng tin c\u1eady. H\u01b0\u1edbng d\u1eabn n\u00e0y bao g\u1ed3m c\u00e1c m\u1eb9o k\u1ef9 thu\u1eadt v\u1ec1 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n, k\u00edch th\u01b0\u1edbc, v\u00f9ng y\u00ean t\u0129nh v\u00e0 logo \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady.<\/p>","protected":false},"author":17,"featured_media":50791,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[2635],"tags":[],"class_list":["post-45562","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>How to Design QR Codes for Reliable Scanning<\/title>\n<meta name=\"description\" content=\"Learn to design QR codes for reliable scans. This guide covers technical tips for contrast, sizing, quiet zones, and logos to ensure reliable performance.\" \/>\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\/9-qr-code-design-tips-for-better-scans\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Design QR Codes for Reliable Scanning\" \/>\n<meta property=\"og:description\" content=\"Learn to design QR codes for reliable scans. This guide covers technical tips for contrast, sizing, quiet zones, and logos to ensure reliable performance.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pageloot.com\/vi\/blog\/9-qr-code-design-tips-for-better-scans\/\" \/>\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=\"2025-08-30T05:47:39+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-22T13:14:08+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/pageloot.com\/wp-content\/uploads\/2026\/03\/photorealistic-lifestyle-photo-aspect-ratio-1-1-a-professional-graphic-designe-7304-dd7e69b93617.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"1024\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Siim T\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@getpageloot\" \/>\n<meta name=\"twitter:site\" content=\"@getpageloot\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"Siim T\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/9-qr-code-design-tips-for-better-scans\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/9-qr-code-design-tips-for-better-scans\\\/\"},\"author\":{\"name\":\"Siim T\",\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#\\\/schema\\\/person\\\/fa28992c2e52546f0812833bac852dfe\"},\"headline\":\"How to Design QR Codes for Reliable Scanning\",\"datePublished\":\"2025-08-30T05:47:39+00:00\",\"dateModified\":\"2026-04-22T13:14:08+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/9-qr-code-design-tips-for-better-scans\\\/\"},\"wordCount\":1031,\"publisher\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/9-qr-code-design-tips-for-better-scans\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/photorealistic-lifestyle-photo-aspect-ratio-1-1-a-professional-graphic-designe-7304-dd7e69b93617.webp\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"vi\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/9-qr-code-design-tips-for-better-scans\\\/\",\"url\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/9-qr-code-design-tips-for-better-scans\\\/\",\"name\":\"How to Design QR Codes for Reliable Scanning\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/es\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/9-qr-code-design-tips-for-better-scans\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/pageloot.com\\\/blog\\\/9-qr-code-design-tips-for-better-scans\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pageloot.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/photorealistic-lifestyle-photo-aspect-ratio-1-1-a-professional-graphic-designe-7304-dd7e69b93617.webp\",\"datePublished\":\"2025-08-30T05:47:39+00:00\",\"dateModified\":\"2026-04-22T13:14:08+00:00\",\"description\":\"Learn to design QR codes for reliable scans. 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