將任意網址、文字或 Wi-Fi 憑證即時編碼為可掃描的 QR Code Instantly encode any URL, text, or Wi-Fi credentials into a scannable QR code
輸入 Input
貼上網址或輸入文字 — QR Code 會自動更新 Paste a URL or type any text — QR code updates automatically
0 / 2953
ISO/IEC 18004 規範靜區至少 4 個模組寬 — 低於 4 可能讓部分掃描器無法辨識 ISO/IEC 18004 mandates a minimum 4-module quiet zone — values below 4 may not scan on some readers
超過 QR Code 容量上限 Over QR code capacity
目前設定下，QR Code 最多能容納 … 個 UTF-8 位元組，你輸入了 … 個。請縮短輸入，或降低糾錯等級（L 最寬鬆）。 The current settings cap at … UTF-8 bytes; you entered …. Shorten the input or lower the error-correction level (L gives the most headroom).
QR 版本高且尺寸小，低解析相機可能難以掃描 High QR version at small size — low-res cameras may struggle to scan
QR Code（Quick Response Code）是二維條碼，由日本電裝（Denso Wave）於 1994 年發明。它用黑白方塊矩陣編碼文字資料，手機相機可在毫秒內辨識。QR Code 主要分為四種版本（Version 1–40），版本越高，模組數越多，可容納的資料量也越大。
QR Code (Quick Response Code) is a two-dimensional barcode invented by Denso Wave in Japan in 1994. It encodes text data in a matrix of black and white squares that a phone camera can read in milliseconds. QR codes range from Version 1 (21×21 modules) to Version 40 (177×177 modules) — higher versions hold more data but produce denser, harder-to-scan codes.
糾錯等級： L（7%）、M（15%）、Q（25%）、H（30%）— 數字代表即使部分損壞，QR Code 仍能被正確讀取的比例。日常用途選 M；若計劃在 QR Code 中央加上 logo，請選 H（30% 還原能力）讓 logo 遮住部分模組後仍可掃描。
Error correction levels: L (7%), M (15%), Q (25%), H (30%) — the percentage of data that can be recovered even if the code is partially damaged or obscured. M is the right default for most uses. Choose H if you plan to overlay a logo in the centre — the 30% recovery capacity lets the logo cover modules while the code remains scannable.
資料容量與掃描建議： QR Code 依糾錯等級與內容類型有不同的容量上限。最大版本 40 在最低糾錯 L 下，可容納約 2,953 個 UTF-8 位元組、1,817 個英數字或 984 個漢字（ISO/IEC 18004）。網址保持在 200 字元以內最理想 — 產出的 QR Code 緊湊，低解析相機也容易掃描。列印時建議最小尺寸 2 cm × 2 cm，四周保留 ISO/IEC 18004 規範的靜區（至少 4 個模組寬）以確保各種掃描器都能辨識。
Capacity and scanning best practices: Capacity depends on error-correction level and content type. At version 40 with the lowest correction L, a QR code holds about 2,953 UTF-8 bytes, 1,817 alphanumeric characters, or 984 Kanji (ISO/IEC 18004). For URLs, keeping the input under 200 characters produces a compact code that low-resolution cameras can read reliably. When printing, use at least 2 cm × 2 cm and preserve the ISO/IEC 18004 quiet zone — at least 4 modules wide on every side — so older or more conservative scanners still decode it.
「QR Code」是 Denso Wave Incorporated 的註冊商標。其規格已公開為 ISO/IEC 18004 標準，專利權人選擇不行使專利，因此產生 QR Code 免費；此處標註商標僅為標示用途。請僅將產生的 QR Code 用於合法用途——切勿編碼釣魚、惡意或詐騙連結。
“QR Code” is a registered trademark of DENSO WAVE INCORPORATED. Its specification is published as the ISO/IEC 18004 standard and the patent owner has chosen not to exercise patent rights, so generating QR codes is free of charge; the trademark is acknowledged here for attribution only. Please use the codes you generate for lawful purposes only — never encode phishing, malware, or scam links.
快速導覽
把需要的說明放在工具下方，讓第一次使用與之後回來複用都更順。
英文搜尋: QR code maker、barcode generator、QR URL encoder、free QR code online
使用方式
常見情境
常見問題
不會。所有 QR Code 都用瀏覽器 Canvas API 在本機產生，沒有任何上傳請求。
即使 QR Code 部分損壞或遮蓋，仍能被正確讀取的資料比例。L=7%、M=15%、Q=25%、H=30%。一般用途選 M；若要在中央放 logo，選 H。
上限隨糾錯等級不同：L 約 2,953、M 約 2,331、Q 約 1,663、H 約 1,273 個 UTF-8 位元組（漢字模式約 984 字）。網址實務上建議 200 字元以內，低解析相機也好掃。
ISO/IEC 18004 規範靜區（四周白邊）至少 4 個模組，否則部分掃描器可能讀不到邊界。0/1/2 留給排版緊湊時用，但會跳警告；列印或正式用途維持 4 最保險。
Quick guide
Compact below-tool notes that help first-run users and repeated visitors move faster without changing the main interface.
Chinese search: QR碼產生器、QR Code製作、條碼產生、行動條碼生成、QR碼生成器
How to use
Examples
FAQ
No. All QR code generation happens locally in your browser using the Web Canvas API. Your text or URL is never sent to any server.
Error correction allows a QR code to be read even when it is partially damaged or covered. Level L recovers 7% of data, M recovers 15%, Q recovers 25%, and H recovers 30%. Use M for most purposes; use H if you plan to overlay a logo in the centre.
The ceiling depends on the EC level: L ~2,953, M ~2,331, Q ~1,663, H ~1,273 UTF-8 bytes (Kanji mode ~984). For URLs, keep under ~200 characters so low-resolution cameras still scan cleanly.
ISO/IEC 18004 requires a 4-module quiet zone (the white border) so scanners can find the symbol edges. The 0/1/2 options exist for tight layouts but trigger a warning; keep 4 for print or anything official.